HVAC&R Nation November 2016 by AIRAH

Skills WORKSHOP

FEATURE

Refrigerant leaks and corrosion

TO YOU

SIN

GIVIN

IN THE

HT UG O

CE 1920

Large-scale residential geothermal

THE I ND

DRIVERâ&#x20AC;&#x2122;S SEAT INSTALLING AND MAINTAINING PORTABLE AC AT MAJOR EVENTS

PRINT POST APPROVAL NUMBER PP 727272/60606

November 2016 / ISSUE 097 / FREE

ENVIRONMENT FRIENDLY REPLACEMENT FOR R22/R404a/R407c/R507a TDX20 BENEFITS FOR THE END USER TRUE STRAIGHT “DROP-IN” ALTERNATIVE

AU39692

TdX 20 IS AN OPEX RATHER THAN A CAPEX EXPENSE

AND CAN PAY FOR ITSELF IN 12-36 MONTHS ,

25%

ARCTICK RESELLER

PROVIDING AN ROI OF 35-100%

EPA AUTHORISED

BEST ECONOMIC OUTCOME, TDX20 REDUCES

SNAP APPROVED

ENERGY CONSUMPTION BY 5-25%

R#458A ASSIGNED ENVIRONMENTALLY FRIENDLY - HAS A NONFLAMMABLE A1 RATING, LOW CARBON FOOTPRINT,

COMMERCIALLY AVAILABLE

LOW GWP AND IS NON-OZONE DEPLETING

TDX20 BENEFITS FOR THE INSTALLER ADVANTAGES EXTEND BEYOND JUST THE END USER POWERFUL NEW REVENUE STREAM WHILE ENHANCING CUSTOMER LOYALTY WITH SAVINGS AND GREEN TECHNOLOGY

PROVEN, PROACTIVE WAY TO INCREASE SYSTEM

EFFICIENCY. TRUE STRAIGHT “DROP-IN” WITH NO ADDITIONAL EQUIPMENT CHANGES REQUIRED

REDUCES EQUIPMENT FAILURE + MAXIMISING SLA PROFITS UTILISING INSTALLER TIME ON HIGHMARGIN SERVICES

DON’T REPLACE YOUR R-22 SYSTEM

UPGRADE IT To learn more, please visit us at www.bluone.com.au

2 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

Like us below on Facebook or contact us at info@bluone.com.au

ISSUE 097

HVAC&R Nation is published by the Australian Institute of Refrigeration, Air conditioning and Heating (Inc).

November 2016

3/1 Elizabeth Street, Melbourne VIC 3000, Australia. Tel: 03 8623 3000

The main event

Fax: 03 9614 8949

www.hvacrnation.com.au

Magazine team Editor Boon Mark Souphanh boon@airah.org.au Tel: 03 8623 3011 Contributing writer Sean McGowan

Advertising sales Glenn Douglas glenn@airah.org.au Ph: 03 8623 3018 John McGrath john@airah.org.au Ph: 03 8623 3007

As the weather heats up, so too does the Australian events calendar. From Melbourne’s Spring Carnival, to Perth’s Fringe World Festival in January, and the Formula 1 Australian Grand Prix in March – there is plenty to get excited about. In the latest in our series looking at HVAC&R in daily life, Cool Breeze Rentals’ Jeff Bernard explains the growing role of portable air conditioning at major events.

ISSN 1834-9522 HVAC&R Nation is printed on paper sourced from well managed forests and other controlled sources.

Design: Artifishal Studios 140 Johnston Street,Fitzory Victoria 3065 Tel: 03 9417 7420 Printing: Southern Colour 2 Southpark Close, Keysborough Vic 3173 Tel: 03 8796 7007

HVAC&R Nation regulars 6

Skills Workshop

The Toolshed

see what’s new in the ‘Shed

Refrigerant leaks and corrosion

8 Global Update industry news from around the world

Disclaimer HVAC&R Nation is an official publication of the Australian Institute of Refrigeration, Air Conditioning and Heating Inc. Statements expressed in HVAC&R Nation do not necessarily reflect the policy or views of AIRAH or its members. No responsibility is accepted by AIRAH, the Editor or HVAC&R Nation’s supply partners for the accuracy of information or for errors or omissions. HVAC&R Nation is distributed without charge to all financial members of AIRAH. The publisher reserves the right to alter or omit any article or advertisement submitted and requires indemnity from advertisers and contributors against damages or liabilities that may arise from material published. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, mechanical, photocopying, recording or otherwise, without permission of the Publisher.

13,979

TRAINING LIFT-OUT

November exclusive

Green Wedge fuel your enviro cred

Fly Guy accessories to keep you fly

24 Around the Nation who’s in the news?

26 AIRAH News 22

keep up to date with the Institute

AIRAH and industry classifieds

free listings from around the nation

Lighter Side the shonkier side of the nation

Below ground, above par A major development on a former golf course in the western suburbs of Sydney is set to feature the largest residential geothermal installation in the Southern Hemisphere. Sean McGowan reports on the Australian technology that is expected to reduce cooling and heating energy costs by over 60 per cent.

Please consider the environment and recycle this magazine if you are not going to keep it.

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 3

➲ Editorial

THE YEAR OF THE (UNDER)DOG As we move towards the summer months and turn our attention towards “bat and ball”, I’m going to somewhat self-indulgently rewind a little and chat about the fairy-tale AFL Grand Final triumph from my beloved Western Bulldogs. Having grown up in Melbourne’s western suburbs and supported “the Scray” for as long as I can remember, my elation was accurately summed up by Norm Smith (best on ground) medallist Jason Johannisen’s acceptance speech: “WE DID IT!” Breaking that 62-year Premiership hoodoo and lapping up all the post-victory kudos was only made sweeter by the fact that we’ve been universally labelled as perennial, well, underdogs. I’m sure fans of the Cronulla Sharks, Leicester City, and the Cleveland Cavaliers can agree – 2016 has been a good year for sport’s perpetual cellar-dwellers. As we round out the year at HVAC&R Nation, I’m hoping 2017 will see the emergence of yet another underdog – our industry. Many of you are probably well aware that HVAC&R is a somewhat unseen or unnoticed industry, overlooked by the public and apprentices alike. It is hidden by design, as modern buildings require air conditioning to be largely unseen, and when done correctly, unheard.

Selling the industry to prospective tradies has traditionally been a bit of a struggle for a number of reasons (many of which have been discussed in the mag in 2016). It’s a bit of a surprise considering the high demand for labour within the sector, job security, generous pay rates and remuneration packages, and the wealth of opportunities for continual professional development. However, I feel there’s been a recent change in the tide – a realisation that the fragmented nature of the industry is only complicating attempts to move forward and grow. Concentrated efforts to establish a united workforce that can engage the industry are now well in the works. This has me feeling pretty positive regarding the year ahead. AIRAH is constantly striving to help consolidate the different factions of the industry, and is working with the right people to ensure the HVAC&R industry becomes a “destination club” for apprentices. And, as a Doggies supporter, I’m now well aware of how quickly things can turn around for the better – especially when you get the right people involved. Boon Mark Souphanh Editor

Join the “Making HVAC&R Visible” group at www.linkedin.com/groups/7067055 to have your say in the creation of a strategy, plan, and actions to make the industry more visible.

Flush fit mounting

Adjustable, many fittings available

Fast installation Fix-Strap Enhanced rigidity with screws

If you’re interested in distributing Castel products please call METJAK Pty Ltd on 08 94452399

Distributed by METJAK Pty Ltd

15 Pearson Way, Osborne Park WA 6017 Phone: 61 8 9445 2399 Fax: 61 8 9445 2322 Email: sales@metjak.com.au

4 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

Long bend

Your HVAC&R Business Partner

Kirby® Digital Scroll Fridgebox™ - Variable Load Perfection The popular Kirby® Fridgebox™ Outdoor Condensing Unit has undergone a versatile update now offering an enhanced configuration range featuring a Copeland Scroll Digital™ compressor. The new Kirby® Digital Scroll Fridgebox™ with Copeland Scroll Digital™ compressor matched to highly efficient micro channel condensers achieves best in class capacity and close temperature modulation, excellent COP’s and system efficiency. With its wide variable capacity between 20% and 100%, the Copeland Scroll Digital™ compressor is unmatched by any other compressor technology on the market today. The Dixell XC Controller is included for ultimate controllability. The Kirby® Digital Scroll Fridgebox™ is suited to the convenience sector, coolrooms and a variety of cabinet applications. Contact your Heatcraft Account Manager on 13 23 50 for more information.

13 23 50

heatcraft.com.au

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 5

➲ Toolshed 01

Hard-bodied approach

According to the company, the new technology increases energy efficiency and delivers a third of the global warming potential (GWP) of its closest equivalent, R410A.

The renowned Carryboy Tradesman body range is now available for the Foton Tunland ute.

The new R32 refrigerant technology has completely revolutionised the company's air conditioning offering, according to Mitsubishi Electric’s national product manager Atesh Mani. The range is designed to provide reduced environmental impact and improved on energy efficiency and cost effectiveness.

Designed specifically to be fitted to the Foton Tunland single and dual-cab chassis, the Carryboy body unit combines a drop side tray with the security and weatherproofing of a fully enclosed ute. The body range consists of a smooth-finish fibreglass body, and features three wide-opening full-width doors that have the security of two-step rotary locks that can be tied into standard central locking.

“Our MSZ-GL Series is designed to make it incredibly easy for homeowners to ‘set and forget’ with intuitive settings and a quiet, expansive airflow,” says Mani.

The body unit includes both an LED high-level rear brake light and LED internal lights, along with built-in rear lights with stainless steel protection covers. Also installed is a heavy duty rear bumper, and there is also the added option of a rear step.

Mitsubishi has revealed that the AEER, ACOP and Energy Ratings for all MSZ-GL models have improved compared to the R410A MSZ-GE Series. The 2.5 kW model was the most efficient in its class, with a 5.5 Energy Rating.

The inside is designed with a hard-wearing floor, featuring carpeted sides.

An anti-corrosion treatment designed to improve long-term efficiency and performance is used on the heat exchanger of the outdoor unit. The coating, which Mitsubishi Electric calls the Blue Fin Condenser, prevents the corrosion of the aluminium fins caused by salt in the air, especially in seaside regions.

Topping the body unit is “one of the toughest roof racks available” according to the company. It is made from steel with all joints welded for added strength and powered-coated for added life. At the rear is the Carryboy roller bar, which aims to ease loading and unloading from the roof.

For more information, go to www.mitsubishielectric.com.au n

“The Carryboy body unit offers an unrivalled range of options to ensure it may be tailored to a wide range of professions and trades,” says the company. “This includes an array of shelving and draws, rack systems, tie-down points and even a fold-up bench vice, making the Carryboy a proper workshop as well as a transport system.”

Bitzer’s newest CO2 transcritical systems feature a compressor range enhanced by new 2-cylinder and 6-cylinder models, which aim to provide enhanced flexibility in system design.

For more information, go to www.carryboy.com.au n

A number design tweaks have been made to the current models, resulting in a new range of refrigeration systems that aim for reliable hassle-free operation and efficiency savings over the long term.

Blow-up pipe plugger

Huntingdon Fusion Techniques (HFT) has released a range of standard and non-standard inflatable stoppers for tanks, chambers, tubes, pipes, pipework fabrications and ductwork.

The new approach has resulted in recent redevelopment of the company’s ammonia compressor, which has been completely deconstructed and then recrafted. The Bitzer OS95 ammonia compressor has a displacement of over 1,000m³/h at 50Hz and offers almost twice the refrigerant-volume flow when compared to the existing OS85 model. To achieve this, the engineering team in Germany completely redesigned the compressor with all new components.

“These versatile inflatable stoppers are used to service a wide variety of industrial applications,” says HFT chairman Ron Sewell. “As ‘overnight stoppers’, they provide a strong barrier in pipeline activities to prevent foreign bodies entering the line during downtime. In machining applications, they can be inserted below a horizontal flange on a vertical pipe, to prevent machining fluid, swarf and tools from falling into expensive machinery such as pumps and turbines.” Other applications include leak testing of pipework systems of any material, whether commercial, domestic or industrial.

All inflatable stoppers are manufactured with an internal latex balloon covered in a waterproof polyurethane-coated nylon bag for low friction, which reduces risk of static electricity or accidental sparking.

No high-pressure equipment is needed for inflation.

6 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

Brilliant new blower

Ebm-papst has developed a new series of EC centrifugal blowers in the size range from 160 to 250mm.

For more information, go to www.huntingdonfusion.com n

Mitsubishi Electric Australia has unveiled its new MSZ-GL series of domestic air conditioners, which feature R32 refrigerant technology.

The OS95 also features an improved VI slider control, which provides feedback on the positioning and loading of the compressor. The company says the introduction of this control, along with the new integral protection module, will be included in all new screw compressors into the future.

The standard range is available in cylindrical or spherical formats, with sizes ranging from 1 to 96” (25 to 2440 mm).

Mitsubishi’s latest R32 line-up

At the core of the compressor is a new rotor profile, designed to provide increased displacement via a new cross-section design.

For more information, go to www.bitzer.com.au or www.bitzeravp.com.au n

HFT says the inflatable stoppers are particularly useful when one or more can be inserted into a small opening close to a work location, rather than at the end of the pipe, tank or vessel.

Transcritical tweaks from Bitzer

In comparison to conventional AC blowers, these new fans are designed to be more energy-efficient and have a higher power density – achieving an airflow of approximately 3,300 m³/h with a start-up time of only 3 to 4 seconds. At the heart of the new design is a GreenTech EC motor. Typical uses for modern EC fans mainly include applications involving continuous operation, such as ventilation and air conditioning.

Toolshed However, ebm-papst says there are plenty of applications in which the fans are turned on and off.

Other members of the line-up, the Fluke-LDR and Fluke-LDG Laser Line Detectors are designed for use in high ambient light settings with visual and audible indicators for ease of use. The detectors are compatible with Fluke-180LR (Fluke-LDR) or Fluke-180LG (Fluke-LDG) models.

“Rapid availability of the required air volume after activation is often desired, requiring fans that reach maximum speed quickly,” says the company. “Such applications include air locks for access to clean rooms, air curtains on truck loading ramps, cooling systems for power electronics, or extractor hoods in kitchens.” The motor electronics are not fitted right on the motor but on the outside of the scroll housing. Bumps on the underside of the electronics housing aim to increase the power density of the control electronics and prevent overheating.

All laser level models include magnetic wall brackets. For more information, go to www.fluke.com.au n 06

The electronics are protected from outside influences such as moisture and dust by a housing made of rugged die-cast aluminium.

The Kirby Fridgebox outdoor condensing unit from Heatcraft has undergone an update, now offering an enhanced configuration range featuring a Copeland scroll digital compressor.

“A complete plug-and-play solution, EC centrifugal blowers from ebm-papst can be put to work quickly and easily,” says the company. “A further benefit of these ErP-compliant, energy-saving centrifugal blowers is not to be overlooked – sustainability and resource conservation are also priorities in their development and production.”

According to the company, when matched to highly efficient micro channel condensers, the unit achieves best-in-class capacity and close temperature modulation, as well as excellent COPs and system efficiency. With its wide variable capacity between 20–100 per cent, the Copeland scroll digital compressor’s capacity output is continuous and is designed for extremely accurate room temperature control and less energy-consuming compressor start-stops. It also automatically adjusts its energy consumption according to the demand load.

For more information, go to www.ebmpapst.com.au n

Mini-cell marvel

Seeley has introduced its newly-developed mini-cell Chillcel pad technology in its entire Breezair range of ducted air conditioners.

“The Kirby Digital Fridgebox allows Heatcraft the opportunity to incorporate leading compressor technology into a wellknown favourite,” says Ross McKinnon from Heatcraft. “Installing contractors have a proven, superior product that will assist their customers reduce running costs and achieve more stable temperature control. Being fully enclosed with a compact footprint allows business owners to maximise valuable internal merchandising space.”

The evaporative cooling pads are fully manufactured in Australia and specifically designed to maximise cooling in harsh local climates. Seeley International founder and executive chairman Frank Seeley, Affil.AIRAH, says the enhanced small cell design of the mini-cell structure is the culmination of years of development and rigorous testing, achieving up to 21 per cent more cooling capacity than previous models.

The Kirby Digital Fridgebox also includes a Dixell XC Controller for improved controllability. A special algorithm balances the run hours of the compressors to distribute the work load uniformly. Heatcraft recommends use in the convenience sector, coolrooms, and a variety of cabinet applications. Capacities range from 5 to 10kW.

“Sourcing only the best quality paper and then manufacturing the pads locally means we have complete quality control over the saturation efficiencies of our coolers,” says Seeley. “ And we can accurately assess the performance of this and other innovative breakthroughs at our onsite NATA-accredited testing facility.”

For more information, go to www.heatcraft.com.au n

Another new feature introduced across the Breezair range is the external air sensor, which is designed to display the outside temperature on an intuitive touch screen wall controller.

For more information, go to www.breezair.com.au n

USB-powered cool

The Evapolar USB-powered cooler works on the power of water evaporation. The unit doesn’t use Freon or any other toxic coolant. The internal workings are composed of water and paper-thin evaporative materials. According to the company, these materials are easily recyclable and don’t cause any harm to the environment.

Latest level line-up

A new family of laser level products has been released by Fluke. The range aims to provide precise reference points while surviving rough handling on the job.

“No need for installation – just plug it in and feel the sensation,” says Evapolar. “All you need is a wall socket to immediately feel the cooling effects of this portable air conditioning unit. No screws, drills, or heavy lifting required.”

The new line of “professional-grade, precision tools” are designed to survive a 1m drop and feature a fast-settling, self-levelling gimbal that delivers accurate reference points. The Fluke-3PR (red laser) and Fluke-3PG (green laser) Point Laser Levels are self-levelling three-point lasers designed to be accurate to 6mm at 30m (1/4 inch at 100 feet). The green laser (Fluke-3PG) is up to three times brighter for improved visibility in outdoor and long-range applications. The units include a floor stand.

Fridgebox gets facelift

The unit is designed to cool the air in the area of 3–4 m² and has a cooling power of 100W–350W. n

DO YOU HAVE A NEW PRODUCT TO GO IN THE TOOLSHED?

Email boon@airah.org.au All submissions received will be considered, though publication cannot be guaranteed.

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 7

➲ Global Update CHINA

DATA CENTRE DILEMMA Data centre operators in China are installing water-saving cooling towers, other advanced cooling systems, and also making water conservation-focused changes to their facilities' designs. The changes come amid the Chinese government’s push to clean up the footprint of its rapidly growing data centre industry. The government estimates that data centres consume more energy than the total energyuse of Hungary and Greece combined. Most of China's 1.37 billion population is fully connected to the internet, which has resulted in heavy data centre use. On top of this, most data centres in China are inefficient, operating at a power usage effectiveness (PUE) of 2.2. The City of Beijing recently issued a ban on data centres with a PUE higher than 1.5. n

FRANCE

CHANNEL VISION In the largest HFO chiller installation of its kind in the world, R1233zd(E) will replace the existing R22 chillers serving the Channel Tunnel that links the UK and France. Four 10MW water-cooled centrifugal chillers using the new HFO refrigerant will be used to cool the tunnel. When the tunnel was first constructed in 1994, its cooling system was described as “the most expensive cooling system in the world”.

Mackinac Technology has partnered with German research firm Fraunhofer-Gesellschaft and Calvin College to test and prototype the technology.

R1233zd(E) is non-flammable refrigerant and boasts a GWP of just 1. n

The company hopes to have a product on the market in about two years. n

UAE

PLANS FOR COOLER COMMUTE

Air conditioning on London's Tube trains have the potential to make carriages warmer, according to engineers.

Over 170 new solar-powered air conditioned bus stops will be built in Sharjah, UAE, after local bus users complained of having to endure the heat due to inadequate shade.

His company is currently working on designs for new trains set to launch on the Piccadilly, Bakerloo and Central lines from 2025. n

A small company in Michigan, USA, has developed a plastic pane that inserts into existing window frames and is designed to provide the same insulation value as walls while remaining fully transparent.

The transparent polymer panes are bordered by foam frames that fit into windows. A single pane of the prototype has an R-value of 5 and can go up to R-13, based on the number of panes. That is comparable to the R-value of a fiberglass-insulated wall.

CALLS FOR COOLER TUBE

“So what happens is you could cool the Tube, the doors open and all the cool air spills out on to the platform,” says Priestman. “But the trouble is the heat given off by the train to cool the inside of the train is then given into the platform.”

WINDOW TO EFFICIENCY

The new R1233zd(E) chillers will replace the existing eight ageing chillers. The efficiency of the new refrigerant and the technology gains from the new equipment are expected to return up to 40 per cent in energy savings.

Chairman of design firm PriestmanGoode, Paul Priestman, says cooling carriages on certain lines could have the opposite effect because of the heat generated by the process.

USA

"Each shelter was designed taking into account the needs and capacity of each location,” says Sharjah Urban Planning Council representative Khalid Al Ali. “Sharjah Urban Planning Council, in collaboration with the Sharjah Electricity and Water Authority, will provide the new bus stops with solar energy panels for electricity." Last year, Dubai’s Roads and Transport Authority announced its plan to install 400 new solar-powered bus shelters, which would be air conditioned if there was enough public demand. Dubai already has over 800 solar-powered bus stops. n

8 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

INDIA

SPACE-AGE COOL An international team of scientists has designed a cooling system for spacecraft entering the Mars atmosphere. The research was a joint venture undertaken by the Indian Institute of Science (IISc) and the National Institute of Technology at Japan's Kisarazu College. Spacecraft are subjected to severe aerodynamic heating when entering the Martian atmosphere. In order to combat this, the team used a new technique involving the passing of a coolant gas through a porous wall that absorbs the heat and blows it away. The coolant gas forms a film on the outer surface of the spacecraft, absorbing heat from the molecules that it comes in contact with, via convection. The heated coolant gas is then flushed downstream by the continuous supply of gas from the spacecraft. n

HIRE & SALES TEMPORARY AIR CONDITIONING • • • •

Spot Coolers Packaged Air Conditioners Portable Split Systems Chillers & AHU’s

• • •

Dehumidifiers & Dryers Fans & Heaters Mobile Evaporative Coolers

• • • • •

Offices Retail & Shopping Centres Data & Comm’s Rooms Service Stations Telco Huts & Exchanges

• • • • •

Hospitals & Healthcare Industrial & Manufacturing Universities Warehouses Events

SUMMER SALE NOW ON

EX-RENTAL 4.9kw SPOT COOLERS from $2,350.00 + gst

1300 885 188

24/7 SERVICE

E. sales@coolbreeze.net.au // W. coolbreeze.net.au

FAST DELIVERY AND INSTALLATION

AVAILABLE NATIONALLY MELBOURNE // SYDNEY // BRISBANE ADELAIDE // PERTH // NEWCASTLE CANBERRA // NTH QUEENSLAND

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 9

➲ Cover feature Portable AC plays a vital role in keeping patrons cool during Melbourne’s Spring Carnival.

THE MAIN EVENT As the weath er heats up, so too does events calen the Australia dar. From M n e lb ourne’s Spri Perth’s Fring n g Carnival, to e World Fes tival in Janu Australian G ary, and the rand Prix in Formula 1 M a rc h – there is ple about. In th nty to get e e latest in ou xcited r series look Cool Breeze in g a t H VAC&R in da Rentals’ Jeff ily life, Bernard exp lains the gro of portable wing role air condition ing at major events.

IN THE BEGINNING When Cool Breeze Rentals started out in October 2001, we originally specialised in spot coolers and smaller, refrigerated portable air conditioners to cater for HVAC plant breakdowns in buildings. While this remains an important part of our business today, we’ve now moved into the events space.

This is much more labour-intensive than our commercial work, but it’s an exciting space to be involved in. When we first started doing events, it was with just a few small evaporative coolers at country racing events around Victoria.

10 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

While energy efficiency is always a consideration, the events industry is not quite at the stage where energy efficiency is a major factor

While it wasn’t our speciality then, we learned a lot. Things like how to engineer supply and return-air components to work effectively in structures. Necessity is the mother of invention, and the learning curve was steepest in our first two years with corporate events.

Cover feature Our involvement with major events began with the Formula 1 Australian Grand Prix in 2005. Initially, we provided air conditioning to about 15 marquees around the Albert Park circuit.

MIXING IT UP

That first year of the Grand Prix was fairly daunting, but we were pleased with the outcome. Winning that job put us on the map and gave us the capacity to do more events around the country.

We have some older units still operating on R22, but all of the new units are using R407 or R410.

PREPARATION IS KEY Our event schedule is packed – we provide air conditioning for the marquees at the V8 Supercar races, the MotoGP, the Spring Racing Carnival in Melbourne the Australian Open Golf Championship and Queensland PGA Championship, the Fringe World Festival, and of course the Grand Prix in Melbourne in late March. It’s imperative that we prepare and test our equipment prior to all these large events. Each of our branches have a dedicated refrigeration mechanic working to ensure that all our HVAC equipment is thoroughly checked, tested, and electrically tagged prior to being installed on site. The goal is seamless product reliability, and preventative maintenance is a key element. Some of the equipment, like the larger chillers, might only be used a few times each year so it’s all about storing them correctly and looking after the units when they are not in use. The more care taken when not in use, the fewer problems we encounter when they are out at an event.

Just like in the built environment, our units operate on a mix of refrigerants.

We supply temporary, portable air conditioning of different sorts and sizes – from small evaporative spot coolers and domestic split systems, through to larger, mobile evaporative coolers and packaged refrigerated units from 11kW to 160kW. While energy efficiency is always a consideration, the events industry is not quite at the stage where energy efficiency is a major factor. Event organisers are becoming more conscious of their power bills – particularly due to the number of diesel generators that are used – and place restrictions on how long we can test equipment for, but the energy efficiency of cooling equipment is not really on their radar. But we are seeing technologies like solar-powered air conditioning coming in, so one day I’m sure the events industry will embrace this change and we’ll need to move to meet the market demand.

ABSOLUTE ERA The game changed when temporary marquees at events were replaced with what can only be described as temporary buildings. Hire and event companies like Harry the Hirer introduced “Absolute structures” a few years ago to meet client demand. Increasingly, corporate clients want to host their guests at these events in complete comfort. And when attending an event, you can see how impressive these structures are.

AT THE TRACK FORMULA 1 AUSTRALIAN GRAND PRIX Total cooling capacity:

5500kW

Evaporative coolers:

Split systems:

Packaged air conditioning units:

Air-cooled chillers:

Air handlers:

MELBOURNE CUP CARNIVAL Total cooling capacity:

3500kW

Evaporative coolers:

Split systems:

Packaged air conditioning units:

Air-cooled chillers:

Air handlers:

They can be single or double storey, and their length is limitless. As well as featuring glass walls and doors, and cantilevered balconies, they have a thermos-inflatable block-out roof and solid walls to allow for more effective climate control.

The Australian GP is cooled using a combination of evaporative coolers, splits, and packaged AC units.

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 11

➲ Cover feature A few years ago we started using refrigerated air conditioning, via rooftop packaged units, and this now appears to be the general demand.

COLOSSAL CARNIVAL The Melbourne Cup Carnival is a huge job. The double-storey Absolute structure that you will see on the inside of the Flemington track is conditioned by two 250kW chillers, and four 120kW air-handling units. These units are positioned neatly at either end of the structure. On the bottom floor, a false ceiling is created and we use registers to introduce the conditioned air to the space in much the same way you would in an office setup. However, on the top floor where the ceiling is exposed, we use fabric ducting that tends to blend in to the interior design so that no one really notices it. In the Birdcage area, we typically supply 35 to 40 units, which provide cooling to individual marquees. Most of these are evaporative coolers, with some wall-hung split systems and smaller packaged units, depending on the situation. Another high-profile area at Flemington is the Winning Post, where some of the major corporates are located. For the marquees in that area, we’ll provide six 60kW and 10 35kW packaged-unit air conditioners. In the Elms precinct, three 60kW packaged units will service the bottom floor, while another seven 28kW units will service the top floor. One of the higher profile marquees in this area that you will see during the broadcast is served by two 60kW packaged units.

SEASONAL STAFFING We increase our local workforce by almost 100 per cent to cater for the spring/summer event calendar in Melbourne. Events are a seasonal business, so it can be a challenge to manage the workforce. It’s all about getting the right people and training them up professionally.

At Flemington, we’ll typically have six staff working on site at different locations for the entire week-long Melbourne Cup Carnival event.

Another similarity between both of these events is that the clients demand to have the best environment available for their guests.

The staff start very early each morning to turn the units on and get the marquees down to a comfortable temperature.

Sometimes it can be a challenge. Access might be difficult, or you are unable to achieve the proper return air scenario. This then requires customising the units to make sure they perform at their best.

They then spend the rest of the day checking and maintaining equipment, staying vigilant to make sure ducting is not being crushed, or ensuring equipment has not been moved.

Imagine having 500 people in a marquee shoulder-toshoulder – if the units are not set up correctly, they can potentially struggle on a warm day.

At the end of the day all equipment is turned off, so this can sometimes lead to a 14-hour day at Flemington, depending on weather. The Melbourne Cup Carnival and the Formula 1 Australian Grand Prix are similar in size.

We normally leave the temperature controls with the marquee or catering supervisor rather than the client. Just finding the right person for this can be a challenge, because they may not be on site until the first day of the event.

AN EVENT OF GRAND PROPORTION Almost everything we supply at the Formula 1 Australian Grand Prix is refrigerated air conditioning. We start working on the Grand Prix about 12 weeks out from the event. Our first task is to service the permanent evaporative coolers that service the Albert Park pit buildings, which we are responsible for. Then by mid-January, the event organiser’s engineering offices are installed on site. These feature four or five ducted split systems and room air conditioners, so we service those as well. Around this time, we are allocated a site area on the track that we use for storage and our site shed. We set up alongside Harry the Hirer, working together to ensure an efficient and safe build for the commencement of the marquee installation. We then tend to follow their construction schedule over the following eight weeks in the lead-up to the event, which is normally mid to late March. Once the Grand Prix is run and won, everything gets packed away within about 10 days. It’s quite incredible! n

12 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

Clean Air Home & Office™ HVAC & Duct System Protectant, Cleaner / Freshener Clean Air Home & Office™ is a simple and economical way to clean and freshen HVAC systems and ductwork from large central systems to small wall units. A full treatment takes only minutes, requires no tools and has immediate and long lasting results. Clean Air Home & Office™ cleans away the residue in evaporators and drain pans which is the cause of odours and the growth of bacteria, algae, fungi and moulds. The Clean Air Home & Office™ freshens the entire system leaving behind a durable, invisible, protective coating which is leach-resistant and non-migrating. It protects from broad spectrum biostatic activity on many surfaces and lasts approximately three months in HVAC systems. Heat transfer loss is not compromised due to the microscopic coating. In fact, it can increase efficiency as it breaks down surface tension of condensate water, allowing it to drain out of coils. Clean Air Home & Office™ has little degradation up to 170° C and contains no phenols, tin, heavy metals, lead or formaldehyde. It is non-toxic, water based and provides long term protection. One 250gm can of Clean Air Home & Office™ can treat a five to six tonne unit (approximately 5,000 sq ft of building area), or two to four typical wall units (15,000BTU). For ducted systems, locate the return air grille and remove the filter, with the system ON spray the contents of the can into the duct, the product will then be pulled into your system where it goes to work. You will immediately smell a light fragrance coming from the air vents in every room as the product travels through the entire system. The fragrance should disappear within 24 hours leaving the coating behind to continue its work.

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 13

➲ Green wedge

THREADS WITH SUSTAINABILITY CRED An advanced energy-harvesting technology based on solar and movement is cut from a different cloth. Scientists have been toying with the concept of movement-based electricityharvesting fabrics for some time now. However, a team out of the Georgia Institute of Technology have managed to weave up a whole new fabric concept that can simultaneously harvest energy from motion, as well as the sun.

Zhong believes that the fabric, which is 320 micrometers thick woven together with strands of wool, could be integrated into tents, curtains or wearable garments. “The backbone of the textile is made of commonly-used polymer materials that are inexpensive to make and environmentally friendly,” he says. “The electrodes are also made through a low-cost process, which makes it possible to use large-scale manufacturing.” While early tests indicate the fabric can withstand repeated and rigorous use, researchers are continuing to test its long-term durability. However, if the research team’s optimism is anything to go by, it won’t be too long before the technology makes it way from the lab onto the catwalk. n

The fact that the innovative textile uses two different sources is a significant step forward for researchers, and potentially paves the way for developing garments that are capable of powering devices such as smart phones and GPSs. “This hybrid power textile presents a novel solution to charging devices in the field from something as simple as the wind blowing on a sunny day,” says Georgia Tech School of Materials Science and Engineering professor Zhong Lin Wang. “The fabric is highly flexible, breathable, lightweight and adaptable to a range of uses.” To make the fabric, the team used a commercial textile machine to weave together solar cells constructed from lightweight polymer fibres with fibre-based triboelectric nanogenerators. The Triboelectric nanogenerators use a combination of the triboelectric effect and electrostatic induction to generate small amount of electrical power from mechanical motion such as rotation, sliding or vibration. For the sunlight-harvesting part of the fabric, photoanodes were created in the shape of a thin wire. These were woven together with other fibres.

Are greener garments the next fashion-forward trend?

Be Impressed with Zetco Full range 15-50mm Press x press, press x female, press x male

IAPMO WM-000110 AS 5830.1

Phone 1300 659 639

Email enquiries@zetco.com.au

www.zetco.com.au

14 | HVAC&R Nation | www.hvacrnation.com.au | November 2016 HVAC HP Be Impressed 220X150 NoBleed v1.indd 1

19/10/2015 12:23 pm

REFRIGERANT Skills LEAKS – Workshop CAUSES, CURES, HVAC&R

MODULE

PULLOUT

PROUDLY SPONSORED BY

AND PREVENTION

Refrigerant leaks are one of the most widespread mechanical problems in the HVAC&R industry. Frustrating for customers and service techs alike, these leaks cost the industry billions, with the figures set to rise as the price of refrigerants increases. Aside from being costly, there is also an environmental impact as leaking systems expose refrigerant to the atmosphere. In this month’s Skills Workshop, we will give you an overview of one the main causes of refrigerant leaks – corrosion – and how it can be cured and prevented. A common problem with air conditioning, refrigeration and freezer systems is the loss of refrigerant gas, especially micro leaks. They can be very difficult to find and most people, even technicians, do not know the cause. The two most common forms of external corrosion are pitting and formicary. Unfortunately, these two corrosive processes can occur in as little as a few weeks after installation. However, most of the time, corrosion will begin appearing between 1–4 years. Telling the difference between general pitting and formicary (also known as “ant’s nest”) corrosion is often the first step to determining cause.

GENERAL PITTING CORROSION • Aggressive anions (a-NYE-uns) attack copper tubes. • Anions – are negatively charged chemical particles. • Anions search for positively charged cations (kat-EYE-uns). • Copper is an abundant source of cations. • Large pits characterise general pitting. • They can often be observed with the human eye.

EXTERNAL CORROSION General pitting corrosion is caused by aggressive anion attack on the copper tube. An anion is a negatively charged chemical species. Due to this negative charge, anions aggressively search for positively charged species called cations.

Copper is an abundant source of cations. Large pits resembling bite marks characterise the footprint of general pitting. These pits can often be observed with the human eye. Chlorides are the most common source of the aggressive anions known to cause general pitting corrosion. Pitting will eventually break through to the inside of the tubing and create a leaking condition.

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 15

CHLORIDES

➲ HVAC&R Skills Worskhop • Wallpaper

• Tub and tile cleaners

• Degreasing and detergent cleaners

Common substances

• Carpeting

• Vinyl flooring

• Fabric softeners

containing chlorides can include:

• Vinyl fabrics

• Dishwasher detergents

• Paint removers

Chlorides are the most common

• Aerosol sprays

source of aggressive anions.

FORMICARY CORROSION Formicary corrosion is characterised by small pinholes in the copper tube walls. A lot of the time, formicary corrosion isn’t visible to the naked eye, however, some black or bluish-grey deposits often can be seen on the surface.

GENERAL PITTING AND FORMICARY CORROSION General pitting and formicary corrosion need oxygen and water to take place. While limiting oxygen is basically impossible in most cases, it will come as no surprise that limiting moisture will go a long way to fighting corrosion.

• Laundry bleach

INTERNAL CORROSION PREVENTION How can you neutralise the acids or deal with them? First step is to test the level of acid with a reliable pH test. If it is not too acidic, you can use a high quality acid neutraliser to balance things out. If it is too acidic, then the system will need flushing, and driers and the lubricant will need replacing. At the same time, add a neutraliser to deal with any residue remaining. In the case of outdoor condensing coils, corrosion can be prevented with periodic cleaning. Existing corrosion and build-up can be removed with an acid-based or alkaline-based coil cleaner. In some cases, pure filtered water can also be used. Do not use softened water as it contains salt which will corrode coil fins.

Examples of external copper corrosion.

A 3D representation of corrosion through a tube.

Another key characteristic is a subsurface network of microscopic corroded tunnels within the tubing wall. These resemble ant nest-type structures, and are larger than the surface pinholes above them.

Coils located in certain conditions will require more frequent cleaning, most notably, heavy industrial areas that experience acid rain or coastal areas where ocean salt is present.

Organic acids such as acetic and formic acids are the primary cause of formicary corrosion. Acetic acids or the derivative acetate are found in a number of household products such as adhesives, panelling, particle board, silicone caulking, cleaning solvents, vinegar, foam insulation, and dozens of other commonly found products in the home or commercial/ industrial workplace.

Side view of a leak.

It is not possible to prevent all failures due to corrosion, but these best practices can help: • Low-static MERV filtration and ERVs for fresh air. • Ventilate new buildings during first year. • Annual indoor coil rinsing.

Formic acid can be found in cosmetics, disinfectants, tobacco and wood smoke, latex paints, plywood, and dozens of other materials. It is speculated that the rise in corrosion in recent decades may have been brought about by the emergence of tighter building construction methods, which inhibits outside air induction to dilute or clear away corrosive, indoor build-ups.

It is important to avoid leaving behind coil cleaner chemical residue. This residue has the potential to initiate the corrosion process, even if they are labelled as “non-acid”. Like acid-based cleaners, alkaline cleaners also need to be rinsed thoroughly as alkaline residue can also corrode aluminium and other materials.

• Special coatings in some environments.

Cross-section showing portion of corrosion (leak).

FORMICARY CONDITIONS There are three conditions required: • The presence of oxygen. • The presence of chemically corrosive agent (organic acid). • The presence of moisture. With multiple corrosive agents present, multiple corrosion occurs.

Formicary corrosion tunneling. 16 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

INTERNAL CORROSION CAUSES The main cause of the internal corrosion is the presence of moisture. Improper evacuation causes moisture to be left in the system, which results in: • Increased head pressure. • Increased discharge temperature. • Increased compression ratio. • Loss of efficiency. Here is a little bit of science to explain what also goes on: Humidity is inevitably introduced into a system in small amounts via the lubricant, the refrigerant, and by poor servicing practices. Integrated driers and accumulators can become oversaturated, especially when they are not serviced or changed. Who hasn't come across that one?

HVAC&R Skills Worskhop We all know that moisture is a problem but why? Fluorinated A/C refrigerant gases contain the chemical fluorine, moisture reacts with fluorine present in the refrigerant creating highly corrosive hydrofluoric acid that attacks all system components including aluminium, copper, solder, seals, plastic and rubber. These acids work their way around a system and are often concentrated in coil bends where many micro leaks occur. Other acids are also created due to the presence of moisture, these include hydrochloric acid, carbonic acid created by CO2, and fatty Acids created by lubricant degeneration. Carbonic acid (H2CO3)

Hydrofluoric acid (HFL).

Pinpoint the leak with leak locator bubbles (not dish soap).

FURTHER PREVENTION

To the purist that say “nothing but refrigerant and oil in a system” – with the fine line between a healthy system and an unhealthy system lubricants and refrigerants need safe fully tested and proven additives to keep a system balanced, especially when chemical reactions occur due to the presence of moisture and the inevitable creation of acids. n

Some best-practice methods to prevent internal corrosion include: • Neutralising acid after a burnout.

PULLOUT

• Flushing refrigerant lines when doing major repair or component replacement.

MORE INFORMATION

• Proper evacuation. Hydrochloric acid (HCL).

AVOID ACID! • Acids suspended in oils etch copper, creating pinhole leaks. • Acid attacks motor windings, stripping away vital winding insulation and copper wiring. This leads to compressor burnout. • Acids can attack valve seats and cause wire drawing to occur, causing temparatures as high as 750°C causing valve and lubricant failure. (most AC lubricants boil above 400°C)

• Change the oil! • Using a non-polymer leak sealant product to stop or prevent micro leaks. Polymeric leak stop products aren’t recommended as they tend to travel with the refrigerant in the system and must be installed with a drying agent. They also use dangerous chemicals such as toluene and have a low flash point of 36°C. Poor evacuation or repair practices involving polymer can cause internal chemical reaction, which has the potential to clog metering devices, tools, equipment, and compressor discharge valves. In contrast, non-polymer leak sealants are oil-based and travel safely with the lubricant. They do not react with moisture or air (non-hygroscopic), but react at the leak point, creating thin layers until the leak stops. On top of this, they have a high flash point and are non-toxic to skin.

• Acids can vortice in coil U-bends, concentrating the corrosion.

LEAK DETECTION

• Etched copper particles lodge on the crank shaft causing binding, leading to the need for hard start kits and premature compressor failure.

Here is a basic checklist for detecting leaks:

Even small levels of acids initiate catalytic reactions. Acid first reacts by dissolving metals. Although acid takes time to accumulate, when critical concentrations are reached, the destructive process rapidly accelerates.

PROUDLY SPONSORED BY

This month’s Skills Workshop has been put together by Geoff Russell and James Bowman from Rectorseal Australia. Go to www.rectorseal.com.au

Geoff Russell

• Use a good electronic leak detector to find the area. • Pinpoint the leak with leak locator bubbles (not dish soap). • The first leak you find may not be the only leak, so keep searching. • Leak locator dyes are an option in some cases. • Clean the dye from system surfaces after locating and repairing leaks.

James Bowman

Next month: Standards Update November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 17

CAPACITY RANGE

16.0kW* - TO -

168kW

THE NEXT

GENERATION VRV IV SYSTEM

VRV IV IS DAIKIN’S ANSWER TO THE NEXT GENERATION OF VARIABLE REFRIGERANT VOLUME AIR CONDITIONING Daikin VRV IV Systems offer greater design flexibility, improved energy performance with Variable Refrigerant Temperature control, superior comfort and reliability of operations, and comes with a wide range of product offerings to meet the needs of the modern commercial building.

AVAILABLE IN HEAT PUMP, COOLING ONLY AND HEAT RECOVERY - Standard, High COP or Space Saving type available to suit design priority - Refrigerant cooled inverter PCB for greater operational reliability - Variable Refrigerant Temperature “VRT” feature for improved energy efficiency and comfort - Heat Recovery Link technology for precise and efficient capacity control (only applicable to heat recovery series)

*Heat Recovery series available from 22.4kW to 168kW, Space Saving type not available.

Visit commercial.daikin.com.au or call us on 1300 368 300

18 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

Fly Guy

CLEAN WATER, ON THE GO A new prototype system by carmaker Ford encourages drinking and driving – but not as you know it.

Doug Martin, a powertrain controls engineer at Ford, didn't like the idea that water going to waste. To combat this, he created a prototype system which collects that condensation, and repurposes it as drinking water available on tap. Martin says he was inspired by a billboard in Peru, which captures humidity in the air and renders it into drinking water. Working off that concept, he proceeded to build the “On-the-Go H2O” system with the help of a colleague. The prototype collects the condensation from a car’s AC system, filters it, and then pumps into a tap in the console, allowing the driver and passengers access to clean drinking water. So how much water does it actually collect? Initial tests have exceeded expectation so far. It was found that a car's air conditioning system sweated off approximately 1.9 litres of water per hour – enough to fill almost four bottles. Martin hopes that this technology could be repurposed to help provide access to clean drinking water in arid regions, as well as reduce plastic waste created by water bottles. “All that water going to waste should be recovered to serve a purpose,” says Martin. “The real vision is that this idea could eventually help people who don’t have easy access to water, in remote locations such as the Australian Outback for example.”

As many of you guys will know, water vapour in the air accumulates on the condenser when a car's air conditioner is running. Once in its liquid state, this water usually eventually drips to the ground.

Ford will continue to test and develop the system, with no word at this stage on when the On-the-Go H2O will reach production. However, it’s nice to know that Martin’s enviro-friendly concept – like the water – isn’t going to waste. “I’m trying to make my twin daughters proud, and make the world a better place for them.” n

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 19

➲ Feature The thrill of the drill! Three to four hours of drilling is required before geothermal loops can be lowered into the ground.

BELOW GROUND, ABOVE PAR A major dev elopment on a former golf suburbs of S course in the ydney is set to feature th western installation in e largest resid the Southern ential geoth Hemisphere ermal on the Austr . S e an McGowa alian techno n reports logy that is e xpected to re and heating duce cooling energy costs by over 60 p er cent. Purchased by Frasers Property Australia in 2011, the former Ashlar Golf Course site in Blacktown has been rezoned for the residential development of approximately 1,300 homes and apartments. The estate is known as Fairwater.

As Western Sydney’s newest community, the 38ha site combines a mix of detached and semi-detached dwellings along with 9.5ha of public open space. There is 1.5ha of ponds, wetlands and waterways linked by walking and bicycle paths.

20 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

All houses will be connected to their own heat pump and geothermal loop that will reduce household heating and cooling energy costs by over 60 per cent.

Targeting both innovation and leadership in sustainability, Fairwater is the first project in New South Wales to be awarded a 6 Star Green Star – Communities rating, and aims to provide home owners with sustainability benefits into the future. One of these is a commitment by Frasers Property Australia to install geothermal air conditioning systems to each of the 950 new homes being built on the site, making it the largest residential geothermal installation in the Southern Hemisphere.

Feature GREEN STAR BENEFITS The use of the QPS Geothermal solution at Fairwater contributed significantly to the development being awarded a 6 star Green Star – Communities rating. Of the 81 points achieved by the project, 10 were directly related to the geothermal installation including: • Industry capacity building • Incentive programs • Greenhouse gas emissions • Peak demand reduction • Innovation.

All houses will be connected to their own heat pump and geothermal loop, which is expected to reduce household heating and cooling energy costs by more than 60 per cent. This work is being conducted by QPS Geothermal (QPSG), a division of Queensland Pre Stress (QPS). It is the only company operating in Australia that self-fulfils all works – in that it not only provides the geothermal drilling services, but also supplies and installs specially designed heat-pump technology through its GeoAir division. “The nature and scale of this project is a first within the Australian market,” says QPS Geothermal director Paul Costello.

“The installation of the geothermal loops is relatively easy for QPS given our heritage in ground engineering (but) we needed a robust heat pump to compliment this, which was a key reason for partnering with a company such as ActronAir.” QPSG partnered with ActronAir to develop its own heat-pump solution. Product development and robust testing was conducted at ActronAir’s manufacturing facility in Sydney after QPSG installed a number of geothermal loops for this purpose. Each home is fitted with standard fan-coil units, including wall-mounted thermostat controls, which connect to the heat pump. All interconnecting refrigerant pipe, electrical and controls are installed as per any standard system.

DRILLING DOWN Also known as ground-source heat pumps (GSHPs), geothermal systems for heating and cooling work in much the same way as conventional direct exchange (DX) systems – except that the condensing loop is installed in the ground where stable sub-surface temperatures are taken advantage of. Their installation is completed in two stages – the in-ground works and above-ground works. But given the scale of the Fairwater development, it was critical that QPSG completed the installations around the normal build processes and programs of the development. “We worked with the Frasers Property building team to establish a methodology that allows for the new works to be completed with no impact to the build,” says Costello. Works on each home site only commence after Frasers Property nominate the location of the heat pump in the completed construction drawings.

A survey marker is then placed to mark the location for the geothermal loop – typically 200 mm off the proposed slab. The QPSG drilling crew then drill a well, measuring at 125mm in diameter, to a specified depth. This process takes between three to four hours, depending on the depth and ground conditions encountered. Once the well is drilled to the required depth, a geothermal loop is suspended above the well before being slowly lowered into the well to depth. A “trammie tube” is attached to the end of the loop before installation, and is used to inject a special geothermal grout the length of the vertical bore. According to Costello, the placement of this grout is an integral part of the system. It guarantees thermal transfer between the installed loop and the surrounding ground. And, it also performs a secondary function by providing environmental protection against surface water pollution of ground water. When in place, the geothermal loop is capped off. The slab is then poured and the home is constructed. Normal interior rough-in and fit-off is undertaken by Fraser Property Australia’s nominated air conditioning contractors. After the home is built and landscaping is completed, QPSG connects the heat pump to the geothermal loop, and commissions the system before hand-over.

IN OPERATION The heat pump has been designed to be both compact and quiet – both important factors given the density of the Fairwater development. Measuring 600mm by 600mm, and standing 890mm high, the units have no external fan or condenser coil, allowing them to operate at just 51dB.

A drill rig in action.

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 21

➲ Feature THE GEOAIR SYSTEM Internal works All internal works are conventional. No alternative design or installation methodology is required to accommodate the system.

GeoAir heat pump The heat pumps are Australian designed and manufactured.

System control The system can be controlled either by wall-mounted thermostat or BMS interface

890 (H) x 600 (W) x 600 (L)

1000

All loops are manufactured to ISO9001 standards and are delivered to site pre-assembled and to strict quality controls. Each loop is installed to specified depth and encased in a special geothermal grout. Where multiple loops are installed an 8m separation is required. Total number of loops is determined by the buiding’s air conditioning load.

Where multiple loops are installed connection to heat pumps is by way of refrigerant lines installed horizontally. Depth of lines is subject to site requirements and in-ground service coordination.

GeoAir ground loops

To specification

Horizontal lines

80 0 0

The layout and function of the heat-pump unit has been designed to be similar to a conventional system, so that any air conditioning contractor (no matter their experience in working on ground-source heat pumps) can inspect and service them in the future. In cooling mode, the heat pump circulates a hot refrigerant vapour into the ground via the installed geothermal loop where it absorbs the naturally cooler and stable sub-surface temperature. With excess heat removed, this cooled refrigerant condenses into a liquid before being expanded through an expansion device at the heat pump.

At this point, the pressure is lowered causing the temperature to reduce further. This refrigerant is then circulated through the fan-coil unit installed in the home, absorbing excess heat from the air. This causes the refrigerant to heat and expand back into a vapour, and the cycle is repeated. In heating mode, cold refrigerant is circulated within the geothermal loop, where it absorbs the sub-surface heat. This heated refrigerant vapour is compressed and circulated through the fan-coil unit to provide heating to the building.

CLEAN AND GREEN Construction of dwellings at Fairwater commenced in late 2014, and the first residents moved into their homes late last year. “To date, we have installed just under 300 geothermal loops and commissioned and handed over 140 homes,” says Costello. Construction will continue in stages until May 2020. When completed, almost 1,000 homes will have their own GeoAir system. The total system will deliver 10,000kW of thermal energy across the development. Frasers Property Australia has forecast that the average homeowner at Fairwater will save approximately $600 per annum – a reduction of more than 60 per cent in their heating and cooling costs compared to conventional air conditioning units. Greenhouse gas emissions will also be reduced by over 13 per cent compared to conventional air conditioning units. Additionally, a reduction in peak energy demand in excess of 40 per cent is expected across the community – providing significant downstream benefits to the electricity network.

The layout and function of the heat-pump unit has been designed to be similar to a conventional AC system.

22 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

“It is our hope that the use of geothermal at such a scale as at Fairwater will contribute significantly to the industry as a whole,” says Costello. “And as is the case in other parts of the world, that geothermal is recognised as a suitable and viable solution for cooling and heating.” n

www.greeonline.com

Gree offers a full range of commercial equipment to suit all your project needs

VRF-GMV5 Gree GMV5 ALL DC Inverter VRF adopts high-efficient DC Inverter compressor and DC inverter fan motor. It is a reverse cycle VRF system and could be selected for capacity demand from 8kw to 180kW. • • • • •

Outdoor unit quiet mode. High energy efficiency with high-performance compressor. Long connection pipe design with the maximum length of 1000m. Auto switch of module status in every 8hrs, which greatly improves the reliability of complete unit. 4 levels of static pressure for option with the maximum of 82Pa.

VRF-GMV5 HR Gree GMV5 Heat Recovery System embodies the excellent features of GMV5. It is a three pipes VRF system and could provide Cooling and Heating indoor operation at the same time. The outdoor unit could be modular as one system with capacity up to 180kW. • • • • • •

All DC Inverter Technology. All DC inverter compressor is used in this system. It can directly intake gas to reduce loss of overheat and improve efficiency. 82 Pa Wide Application Location. Advanced Control Functions. Better Reliability. Wide Operation Range: Cooling: -5°C ~ 52°C; Heating: -20°C to 24°C; Simultaneous cooling and heating: -10°C ~ 20°C. Flexible Piping Design.

Ultra Series Heat Pump Water Heater • • •

Including direct heating type and circulating heating type. it’s capable of operation in ambient temperature from -26 °C to 46°C. Modular design. The unit can be combined modularly from 1 unit to 16 units. Maximum capacity can up to 960kW.

D Series Air-cooled Scroll Chiller Gree D series modular air-cooled scroll chillers can be widely used at newly-built or retrofitted industrial and civil building in various sizes, such as: hotels, apartments, restaurants, office buildings, shopping malls, theaters, gyms, workshops, hospitals and other places where there are high requirements on noise level and air quality but it is troublesome to install the cooling tower. • • •

These modular chillers offer versatility with cooling capacities from 60-280kw in singular unit. High-efficiency shell-and-tube heat exchanger design. Multiple-module design for operation system.

Ducted & Cassette Systems It is a kind of split system that the outdoor unit can be freely connected to different types of indoor units according to various indoor decoration requirements.

• • • • • •

Double ambient temperature sensor design makes a precision temperature monitoring. Low start-up current thanks to power delay control design. Higher efficiency thanks to sine wave DC inverter compressor control. High reliability and easy maintenance thanks to one piece integrated PCB board. Stable cooling under -15 °C and heating under -10 °C outdoor environment temperature. Ducted split external static pressure could be adjusted from 0~200 Pascal.

For any enquiries or after sales service please contact 1800 GREE 4 ME or visit greeonline.com

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 23

➲ Around the nation 3

4 2

DATA CENTRE ADVICE FROM A.G. COOMBS

A.G. Coombs has released an advisory note with a design approach for providing fire protection systems in data processing facilities. “Across all industries, data centre facilities large and small underpin the operation of business applications and processes,” says A.G. Coombs. “Maintaining reliable and continuous operation is critical. Disruptions due to fire events, whether damage is caused by the fire or the fire suppression systems, can cause very significant business interruption with substantial commercial effects.” According to the advisory note, when looking at protecting a data facility from a disruption of service, the first step is to decide how critical the facility is to the continuity of your business. This will help determine the risk consequences and the level of fire protection investment required. Sprinkler systems are covered in detail, as well as smoke detection systems and control response. “Sprinklers are one of the most reliable forms of fire protection,” says A.G. Coombs. “However, a wet system introduces the risk of water damage to equipment either by accidental discharge or collateral damage in a fire. Carefully designed concealed-type (or flush) heads or guards can be considered to reduce the chance of accidental discharge due to mechanical damage to the sprinkler. To read the full advisory note, go to www.agcoombs. com.au/news-and-publications/advisory-notes n

RENOVATORS MORE INCLINED TO DIY

Homeowners are prepared to DIY parts of their home renovations to save a few bucks, a recent ServiceSeeking.com.au survey shows.

Fourteen per cent of respondents admit to doing their own electrical work, while 12 per cent did their own plumbing work during renovation. “Hopefully they were qualified electricians and plumbers doing their own renovation, otherwise that is alarming,” says ServiceSeeking.com.au CEO Jeremy Levitt. “Not only is it illegal to work on electrical jobs without a licence, but it is downright dangerous. And an expert is only a click away.” Seventy per cent of renovators admit to finishing some areas of their renovations themselves, with the most popular being painting. A whopping 82 per cent say they did at least some of the painting in their recent transformations. “It is without a doubt the one thing most people think they can have a crack at. And some people have a nifty touch with the paintbrush for sure. But it can be time consuming and picky work, so it doesn’t suit all temperaments. And a messy paint job can ruin an otherwise perfectly executed room. But when budgets are tight it is definitely the first thing renovators tackle themselves.” Landscaping (46 per cent), demolition (43 per cent) and interior design (77 per cent) are also often attempted by homeowners. The services most commonly outsourced to the experts are electrical, plumbing, concreting and flooring and tiling services. n

FUJITSU’S FOOTY DAY

AIRAH company member Fujitsu General recently celebrated South Sydney Football Club’s NRL season’s end with a social day filled with football-inspired activities. The afternoon was a fundraiser for The Sporting Chance Cancer Foundation, Fujitsu’s charity of choice. The foundation is a not-for-profit organisation committed to helping children in palliative care.

24 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

“The South Sydney Rabbitohs is one of the most popular NRL teams,” says general manager – sales and marketing Dave Smith. “The partnership Fujitsu has with the Rabbitohs has enabled the organisation to foster stronger connections with the sporting community. Fujitsu staff and customers have enjoyed meeting the team throughout the year, and the fun day was a great way to wrap up the footy season.” For a gold coin donation, Fujitsu staff participated in a series of challenges led by Rabbitohs players, including pass, kick and catch the ball, as well as a best dressed competition, raffle tickets, and a barbeque. For each Fujitsu air conditioner sold, a donation is made to The Sporting Chance Cancer Foundation. Through these contributions and various ongoing fundraising drives, Fujitsu General has donated more than $6 million to the charity. n

TESTO TEAMS-UP WITH TAFE

Testo has supplied its electrical demo kit to the students of Box Hill Institute. “In a constant effort to better the next generation of industry professionals, Testo has dutifully donated an electrical demo kit to the school, which has been putting in some serious work to ensure their facilities are state-of-the-art,” says Testo. “Courses using these kits cover a range of subjects – everything from minute electrical details to standard refrigeration and air conditioning courses.” Head of School, Industry and Trades Tony Watson, and technical manager Len Raines were on hand to receive the kits. Raines says students enjoy working with digital instruments, and the exposure to new technology makes them more ready for the work place. n

Around the nation 5

AUSSIE HVAC&R TO CRACK $3 BILLION

The Australian HVAC&R market is expected to crack $3 billion by 2022, according to a new report by Research and Markets. The report suggests the market will grow at a compound annual growth rate (CAGR) of 9 per cent from 2016 to 2022. The overall demand for HVAC products in the Australia and New Zealand region are estimated to remain high for various applications, including commercial, residential, industrial, and institutional segments. Various government initiatives, emerging smart buildings, and growing consumer concerns that are driving manufacturers, developers and system integrators to build and provide energy-efficient, technologically advanced HVAC&R equipment. The Australia and New Zealand HVAC markets have been covered by both value and volume. Research and Markets has further classified the report on the basis of different types of HVAC&R products including window and portable air conditioners, split air conditioners, single-packaged units, chillers and fan-coil units (FCU), and air-handling units (AHU). "The Australia HVAC product market by volume is witnessing a gradual emergence of new cost-effective and energy-efficient technologies that meet the required standards and regulations, as well as attempts to fulfil growing customer concerns," says the report. "Major products that have widespread usages across different end-use applications include window, portable and split units for residential purposes. Chillers are growing at a very high growth-rate followed by VRFs." n

RUNNING A GREAT RACE

The recent Refrigeration and Air Conditioning Expo (RACE) in Brisbane attracted a record attendance, with more than 300 attendees and 50 different supplier and industry group displays on show. This year, the expo took an interactive approach, with challenges and questions for attendees to complete around the displays. Conducted by a range of industry experts, the seminars throughout the day had a timely focus on the future of refrigerants, the launch of press fittings for copper joining, and factory fitted EEV for refrigeration. Following the press-fitting seminar, the MaxiPro product drew one of the biggest crowds of the day. Similarly, the EVD-Ice product also drew attention. “Of course there were many other major product displays and demonstrations worthy of mention, too many to quote,” says event organisers Actrol, “as well as industry organisations AIRAH and RACCA making this show such a worthwhile event for all who attended.” Attendees were also treated to a surprise show by renowned magician and illusionist Matt Hollywood at the Extol stand.

AMMONIA ON THE RISE

The Australian ammonia market is predicted to pass $891.6 million by the end of 2016, a 5.8 per cent increase over 2015. According to a new report published by Persistence Market Research, the market will grow at a CAGR of 6.3 per cent between 2016 to 2024. The research firm says a number of factors are driving this growth including rising demand for explosives and industrial chemicals. Its use as a commercial refrigerant alternative for hydrofluorocarbons is also driving growth. n

DEATH BLAMED ON HEATER FIRE

The body of a 65-year-old man was found inside a home destroyed by a suspected heater fire in Glossodia, Sydney. Initial inquiries suggest the blaze was started by a faulty slow-combustion heater. Police chief inspector Garry Sims says the man died despite attempts to escape the burning home. "It does appear as though he was making an effort to exit the house," says Sims.

Attendees were entered into a draw to receive a number of prizes, which were drawn in the evening. Prizes included a $5000 holiday voucher, which was won by On Q Electrical.

According to Police, the man's 64-year-old wife was woken by a loud noise, and when she left her bedroom she was confronted by heat, smoke and flames coming from the lounge room.

“All of this success was due to the commitment and hard work by staff, suppliers and hosts alike,” says Actrol. “A huge thank you is also due to everyone that attended the event, and were genuinely interested in everything on offer – you helped make this the best RACE yet!” n

She was unable to get into the room, where she had last seen her husband. "There was a fault with the heater, and either a log or embers has come out of the heater and caused ignition to the house," says Sims. n

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 25

➲ AIRAH News Perth

Darwin

TRADE ESCAPADES The industry’s movers and shakers flocked to AIRAH’s Trade Nights in 2016.

AIRAH has released its Trade Night line-up for 2017: n March 2 – Port Macquarie

Coffs Harbour

n March 9 - Hobart n March 16 – Wagga Wagga n March 30 – Rockhampton n May 11 – Melbourne n May 25 – Perth

Coordinated by the Institute’s state divisions, hundreds of attendees visited the 16 AIRAH Trade Nights held across the country in 2016. Despite being an ARBS year, numbers remained strong, with exhibitors keen to showcase their latest kit and attendees keen to rub shoulders with their industry counterparts. “Trade Nights continue to be a key focus for AIRAH and its membership services officers around the country,” says AIRAH CEO Tony Gleeson, M.AIRAH. “They are a great opportunity for everyone to broaden their networks and see the HVAC&R industry's latest innovations. There is always a positive buzz in the room, and of course, plenty of food and beer!”

n June 1 – Western Sydney n June 8 – Darwin n July 20 – Brisbane n July 27 – Central Sydney (Luna Park) n August 8 – Cairns n August 10 – Mackay n August 31 – Wollongong n September 14 – Ballarat n September 28 – Canberra n October 12 – Shepparton n October 19 – Adelaide n

Townsville

Brisbane

Hobart

26 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 27

➲ Smoko with . . .

Name: Daniel Ey industry do you work in? What par t of the HVAC &R commissioning and ng vici Ser ng. oni air conditi Domestic and commercial ia. for Fujitsu General Austral &R ut working in the HVAC What’s the bes t thing abo ring their life stories. hea and day ry eve ers tom industry? Meeting new cus n in the industry d in the industry? I’ve bee How long have you worke large air conditioning manufacturers. g for for eight years now, workin eter. Favourite tool? My multim do HVAC &R industry, what If you didn’t work in the or builder. cian ctri ele an be I’d ng? doi you think you would be tion of HVAC &R Nation? What’s your favourite sec entering innovative products that are The Toolshed – for new and the market. Dream car? A Ferrari. Adams or Emilia Clarke. Dream date? Rachel Mc trip around Australia. Dream holiday? A road an Club. Drink of choice? Canadi k Garrat t. listen to? “Worr y” by Jac What song did you las t the shed.” ? “Not the sharpest tool in Favourite quote or saying Chocolate donut. Favourite smoko snack? ncock. player Graham "Stiffy" Joh Sporting hero? Former AFL

Now Available in Australia! EASY to install Minimal water usage Lowers energy usage Increases cooling capacity Min. Wet areas on coils 1,000 PSI water Ultrafine droplets Commercial finance now available

Controlling humidity is one of the most important steps to protecting a home, ensuring comfort, and safeguarding the family’s health. Santa Fe provides a full line of high-capacity, energyefficient free standing dehumidifiers that are designed and manufactured for the ultimate in humidity control for basements, crawlspaces, and any other inside spaces that deserve the best in humidity control.

www.restorationexpress.com.au 1.800.638.639

28 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

AIRAH and industry classifieds EVENTS

The AIRAH Awards 2016 Built on a history of recognising excellence and achievement within the HVAC&R Industry, the AIRAH Awards honour those who have delivered significant contributions in 2016. Date: Thursday, November 10 Time: 7.00pm Venue: Crystal Palace, Luna Park, Sydney Cost: $180 per ticket.

Tasmania President’s Shout

Victoria President’s Shout

AIRAH would like to thank its members for another great year. What better way to celebrate than with the annual President's Shout? Date: Thursday, December 1 Time: 6.00pm Venue: Dr Syntax, 139 Sandy Bay Road, Sandy Bay Cost: Free for AIRAH members.

AIRAH would like to thank its members for another great year. What better way to celebrate than with the annual President's Shout? Date: Thursday, December 8 Time: 6.00pm Venue: CQ Bar, 113 Queen Street, Melbourne Cost: Free for AIRAH members.

SA President’s Shout AIRAH would like to thank its members for another great year. What better way to celebrate than with the annual President's Shout? Date: Friday, December 2 Time: 6.00pm Venue: The Jade, 160 Flinders Street, Adelaide Cost: Free for AIRAH members.

WA President’s Shout AIRAH would like to thank its members for another great year. What better way to celebrate than with the annual President's Shout? Date: Wednesday, November 30 Time: 5.00pm Venue: Northbridge Brewing Co, 44 Lake Street, Northbridge Cost: Free for AIRAH members.

TRAINING

Campus Energy Efficiency and Planning – WA Date: Wednesday, November 16 Time: 4.00pm registration for a prompt 4.15pm start, followed by light refreshments Venue: State Library of WA, 25 Francis Street, Northbridge Cost: Free for members, $55 for non-members.

Free Classified Ads Whether you are looking, selling, trading or tendering – HVAC&R Nation classifieds is the best way to spread the word! HVAC&R Nation is offering a free industry classified service! Send in your submissions, text only – no images or logos. Send your submissions to: boon@airah.org.au or c/o AIRAH, Level 3, 1 Elizabeth St, Melbourne Vic 3000.

The foremost resource EDITION 05 EDITION 05

N REFRIGERATIO G AUSTRALIAN NDITIONINRCE AND AIR-CO NAL RESOU

AUSTRALIAN REFRIGERATIO N AND AIR-CO NDITIONING NATIO

NATIO

Australian Refrigeration and Air-conditioning Volumes 1 and 2

NAL RESOURCE

GHT TO YO OU U B BR

E 19 20 NC

THE

I NDUS

G C

GIVIN

E 1920

T TO YOU BY

A GI V I NG B

H UG RO

TH E I NDU

VOLUME

AIRAH is delighted to bring one of Australia’s foremost resources for training in the refrigeration and air conditioning industry to the education sector: Australian Refrigeration and Air-conditioning, Volumes 1 and 2, authored by Graham Boyle, M.AIRAH.

The completely revised fifth editions have brought a new dimension to this highly regarded resource, with a new full-colour format, hundreds of updated and upgraded images and improved text, which make for easier reading and understanding.

For more information, go to www.airah.org.au/ARAC

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 29

➲ The Lighter Side 2

1 WINNER

BARK-COVERED BRACKET Fair to say, this interested piece of improvisation has us stumped. Spotted by Johny from Victoria. n

TIGHTENING TROUBLES Spotted in Western Australia by Travis, he reckons the installer must’ve had his/her pre-workout shake before tightening up the flares on this left-hand bend. n

BROOM FOR IMPROVEMENT Yes, that is broom that has been converted into a bracket. “At least it’s screwed in place!” says Simon from Queensland. n

TRIPE PIPEWORK Hamish from Victoria spotted this shoddy bit of AC pipework on the roof of a Melbourne pub. Looks like whoever installed it may have had a few before the job. n

DOWN IN THE DUMPS “The client couldn’t understand why their dome kept dumping its gas,” says Mitchell from Victoria. n

HAVE YOU COME ACROSS SOMETHING SCARY, UGLY OR JUST PLAIN FUNNY? If your entry is deemed the monthly winner, a bottle of Jim Beam bourbon 750ml will be on its way to your door. Please include a postal address with your entry. Entrants must be aged 18 years or over. Send submissions to editor Boon Mark Souphanh at boon@airah.org.au. This month’s Lighter Side is brought to you by the Australian Refrigeration and Air-Conditioning (ARAC) Manuals Volumes 1 and 2 – available now!

30 | HVAC&R Nation | www.hvacrnation.com.au | November 2016

THE HOME OF COMPRESSORS At Actrol, we have a comprehensive range of compressors for new and replacement applications. Hermetic, semi hermetic, scroll, screws and rotary, you name it – we’ve got it! And we only source world renowned companies such as Tecumseh, Emerson (Copeland), Bitzer, Danfoss (Maneurop), SCI, and others.

ACTROL.COM.AU

J2275_The Gauge_Ad_220x310_071016.indd 1

7/10/2016 3:45 PM

November 2016 | www.hvacrnation.com.au | HVAC&R Nation | 31

ASTR

Refrigeration Technology

GEA Plus Box with Bock Compressor now available from CoolChain. www.coolchain.net.au