February 2020
Newsletter Number 91
Scott Street Liverpool Considered Sydney’s third CBD, Liverpool, in the rapidly growing greater south west region, is undergoing a significant transformation. The completion of a new 4 star Green Star commercial office building is representative of this change as the city welcomes new business to the area.
Located just 150m from Liverpool Station, 25-35 Scott Street was designed by Group GSA architects and built by Taylor Construction for owner Goldstein & Rush Pty Ltd. The 15-storey office tower includes ten commercial office floors with over 10,000m² of flexible office space offering natural light through floor-to-ceiling glazing. The building also features four basement car parking levels, a rooftop garden terrace and a ground floor café. The project has been certified by the Green Building Council of Australia (GBCA) with 4 star Green Star Design and As Built ratings. It has also received a 4.5 star NABERS Energy rating. Taking over a mechanical services design by JHA Consulting Engineers, ICR Air Conditioning were engaged by Taylor in a design and construct (D&C) role. The Sydney-based mechanical services contractor provided air conditioning to all office levels, as well as car park ventilation and general ventilation to amenities, store rooms, switchboards and communications rooms. To help meet the project’s Green Star and energy efficiency objectives, ICR has installed approximately 360 Rickard Linear VAV diffusers across office levels one to nine. Supplied by Fantech, these units were selected over a traditional VAV box design due to their energy efficiency, ability to provide superior thermal comfort and ease of rezoning. “Creating zones for fitouts can be done relatively easy with an additional thermostat and programming,” says ICR project engineer, Luke Anderson. Anderson says the Rickard VAV diffusers also provide for a more reliable terminal velocity with the turndown of air. “The air throw is more constant due to the adjustable plate at the VAV diffuser,” he says. “This prevents the dumping of air at lower airflows when the system turns down.” Maintenance is also made easier due to the units’ localised controls. Image Credit: Ultra Building Works
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... 4 Star Green Star Design and As Built Ratings.
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“Local access rather than via the BMS (building management system) is handy for maintenance, minor adjustments and fine tuning,” Anderson says. Having not used the Rickard Linear VAV diffusers on a project of this scale before, ICR worked closely with Fantech, the diffuser manufacturer and the control company to determine the best control strategy for the building. Fantech also supplied fans to meet the ventilation and exhaust air requirements of the kitchen and toilets, fire pump room, basement level car park and general exhaust. Fantech products were also used in the outside air supply and stairwell pressurisation systems. “ICR has had a good working relationship with Fantech for as long as I have been working with the company,” Anderson says. “The majority of our engineers and project managers, including myself, have also attended the Fantech training programs. We trust the performance of the products and the data Fantech supply, and we often utilise the Fans by Fantech selection program to assist with our design process.” 25-35 Scott Street Liverpool reached practical completion in December 2018.
Technically Speaking
AMCA 201-02 provides a table of system effect factors for inlet obstructions. This figure requires the percentage of unobstructed area and the distance of the obstruction from the inlet plane.
System Effects
The fan area in this example is 0.502 m².
with Kerry Dumicich
If the flexible connection bunches up by 30mm, the obstructed area is 0.43 m².
When selecting a fan for an application, it is common practice to use the manufacturer’s catalogue data. Catalogued air flow performance data is created from test results conducted to standards such as ISO5801. Testing to a standard ensures accurate and consistent results between different laboratories. However a test standard specifies certain duct configurations that must be used in order to achieve this consistency. These standardised duct configurations ensure even air flow distribution onto the inlet of a fan, and a straightening of the air on the fan outlet. When the air flow or velocity distribution is modified on either the inlet or the outlet of a fan, the performance of the fan can be affected. The effect of the inlet or outlet conditions on the fan’s performance is known as a system effect. It should also be noted that as air density affects fan performance (which is affected by temperature and altitude), the test results are always corrected to a standard density of 1.2 kg/m³ to ensure results from different laboratories and different atmospheric conditions give consistent results.
Non-standard conditions
When the fan inlet and outlet conditions differ from the standard test conditions, the fan performance curve should be modified to account for the system effect. Publications such as AMCA 201-02 “Fans and Systems” or AIRAH DA3 “Duct Design” give estimates of “system effect factors” that may be appropriate for various conditions. While the list of system effect factors in these publications is limited, they do give an indication of expected performance reductions. The system effect factor is effectively a pressure drop that is subtracted from the manufacturer’s fan performance curve to create the fan system curve. Where more than one system effect is present, the system effects should be added together. While the fan performance curve is reduced, the power curve remains the same. Therefore if the fan performance is reduced due to a system effect, yet consumes the same amount of power, the fan efficiency also reduces.
An AP0804CP6/25 fan is installed with a flexible connection immediately on the fan inlet. The design duty point is 8,000 L/s @ 200 Pa. It is assumed that the flexible connection bunches up when the fan is running, creating a 30mm air flow obstruction around the circumference of the fan. So how do we calculate the fan system curve caused by this bunched up inlet flexible connection? System Effect Curve Distance from obstruction to inlet plane
100 95 90 85 75 50 25
As the obstruction is at the inlet plane, the system effect curve is S-T. We will use curve “S” for this example. System effect curve “S” is equivalent to a Dynamic Pressure Loss Coefficient C of 0.75. To calculate the system effect factor, the formula below is used.
SEF = C
V (1.414 )p 2
0.75 inlet diameter
0.5 inlet diameter
0.33 inlet diameter
0.25 inlet diameter
At inlet plane
X W-X V-W U-V
X W-X V U T
X V-W V-W U S-T S-T
W U-V U-V S-T R-S Q-S
V T-U S-T R-S Q P
Table 1 - System Effect Curves for Inlet Obstructions
F G H I J K L M N O P Q R S T U V W X
16.00 14.20 12.70 11.40 9.50 7.90 6.40 4.50 3.20 2.50 1.90 1.50 1.20 0.75 0.50 0.40 0.25 0.17 0.10 Table 2
2 y
Where V is the obstructed velocity. Obstructed velocity = Airflow / Obstructed Area = 8/0.43 = 18.6 m/s Density (p) = 1.2 kg/m³
SEF = 0.75 x (18.6/1.414)² x 1.2 SEF = 156Pa
The above calculation has been performed at all points of the complete fan performance curve and the resultant fan system curve is shown in red in the below graph. Comparison of catalogue fan curve and fan system curve
Design point - 8,000 L/s @ 200Pa
Operating point including system effect - 7,400 L/s @ 170Pa
Operating point including system effect at 8,000L/s
AP0804CA9/25 Catalogue Data AP0804CA9/25 Fan system curve
Example
Percentage of unobstructed inlet area
The ratio of these areas is 85.5%.
Dynamic Pressure Loss Coefficient C
Duct system curve
Following the duct system curve until it intersects with the fan system curve provides the expected fan performance with a bunched up inlet flexible connection. Fan manufacturers commonly encounter questions as to why site air flow and pressure measurements do not match the catalogued performance curve. One reason for this discrepancy is that the fan’s performance curve should always be modified to include all system effect factors. Side Note: A system effect factor is a value that accounts for the effect of conditions adversely influencing fan performance when installed in the air system. The system effect factor only includes the effect of the system configuration on the fan’s performance.
Conclusion
Fantech publishes a “Do’s and Don’ts” in Section O of the Fans by Fantech catalogue. These “Do’s and Don’ts” are designed to minimise the effect of system effect factors and therefore allow the engineer to obtain as close to the catalogued fan performance as possible. However, it must be acknowledged that installations are frequently tight for space and therefore the ideal installation conditions are often not possible. In these cases, an appropriate system effect factor should be determined so that the corrected fan system curve can be estimated.
1 y
A lifetime of service 30 years
Tina Jordan Fantech NSW - Despatch Clerk
Tina recalls her early days at Fantech involving manual administration, from inputting sales orders from hand-written dockets to invoicing, faxing and mailing out paperwork. Today, Tina is a Despatch Clerk and spends her time liaising with customers and ensuring paperwork is organised for the trucks. She says that the great people she works with are the main reason she enjoys her work, as well as the variety of new products and customers arriving for pick-ups. Away from work, Tina loves travelling and playing softball during the summer months.
25 years
15 years
Christine Thompson
Fantech VIC – Systems Process Manager
Christine recommenced at Fantech in 2004 after working here from 1988 to1999, taking five years off to have her son. Completing her MBA in 2017, Christine is now the Quality Systems Manager, currently responsible for the quality administration activities of Fantech’s business management system, and business process improvements. She finds the people and culture at Fantech both encouraging and supportive. At home, Christine spends time with her large family, and is a six-time Oxfam Trailwalker.
Mitch Jeffrey
Fantech VIC – Internal Sales Engineer
Patrick Moynihan
Fantech VIC – Operations Manager
Mitch joined Fantech in 1994 after working for the State Electricity Commission (SEC) and in air conditioning sales. Originally employed in Export Sales, Mitch then moved into the role of Internal Sales Engineer (VIC) where he has excelled for the last 23 years. He loves working with a close knit team of dedicated people and also appreciates working for an Australian-based company that has expanded into a multinational group. At home, Mitch enjoys building computers, fishing and photography.
15 years
Fantech recognises the important contribution of its staff to the success of the company and thanks them, particularly those who have reached 10 or more years of service.
Sunil Rajbhandari
Fantech VIC – Senior Purchasing Officer
Sunil previously held the roles of Inventory Controller and Purchasing Officer at Fantech before taking up his current position as Senior Purchasing Officer. Sunil enjoys the culture of the company and its promotion of a work/life balance. Away from work, Sunil plays a number of sports including soccer, badminton and table tennis. He also loves to spend time with his two children.
A qualified A-Grade electrician, Patrick spent 16 years in electronic manufacturing and servicing before joining Fantech. Now Fantech’s Victorian Operations Manager, he enjoys the challenges his busy role presents. He fondly remembers the retirement of Jack Pirie, and the Scottish pipe band that played during his presentation. Away from work, Patrick is a CFA volunteer firefighter and enjoys spending time with family and friends.
10 years
Alexis Roeun
Fantech QLD – Customer Service Alexis joined Fantech after completing a traineeship at an accounting firm. Since learning a lot as an AHU Import Officer, Alexis has moved into a Customer Service role and enjoys working with a great group of people. At home, Alexis is busy with a one-year old son and likes to beach camp when time allows.
Fans by Fantech Product Selection Program with Stuart Bryson
Hints and Tips
Selecting a Silencer
When selecting a silencer in the Product Selection Program, you have the choice of two modes. Basic mode is ideal when you only have limited information on the amount of sound attenuation you require; for example the source noise levels at each frequency and the approximate reduction in noise required. Enter the air flow, size limitations and type(s) of silencer to search for matching products. If you have the exact insertion loss values, Advanced mode is more suitable. After completing an Acoustic Analysis, clicking the Select Silencer link within the analysis will automatically fill in the required insertion losses. Enter the air flow and any size limitations – leaving the diameter/width/height/length blank will allow the product to select the most suitable option. From the list of resulting silencers, click a silencer to view the specification information, add it to a schedule or complete an acoustic analysis.
Version 5.5 of the Selection Program can be downloaded from our website. Remember to use the auto-updater to make sure you’ve got all the latest features.
Product News with Peter Henry
Fantech partners with
Fantech has partnered with US-based Hunter Industrial – part of the 133-year old Hunter Fan Company – to introduce the Hunter HVLS fan range to Australia and New Zealand. In large, enclosed spaces where heat can impact on the comfort and productivity of its occupants, Hunter high volume, low speed (HVLS) fans are designed to eliminate the build-up of hot stagnant air in summer by maintaining constant air movement. Suitable for warehouses, commercial spaces and recreational facilities, Hunter HVLS fans generate air movement that creates a natural evaporative cooling effect. This results in a fresher, more comfortable and ventilated environment even on hot days.
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Up to 50% more energy efficient
They feature a light weight, direct-drive motor that delivers exceptionally low operating costs, provides whisper quiet, trouble-free operation and makes installation easy.
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Direct-drive, light weight motor
Range and selection
Hunter HVLS fans use a direct-drive, permanent magnet motor that is significantly lighter than gear-driven alternatives. It is designed to generate large amounts of torque even at low speeds while operating at less than 55dBA (at 3m) to ensure whisper quiet operation.
The Hunter range includes the Titan and ECO HVLS fans. The Titan range features a sleek and contemporary design that will complement any commercial space, and provide effective coverage for areas ranging from 484m² to 1,369m². The Hunter ECO is one of the lightest HVLS fans available on the market with the range providing effective coverage for areas ranging from 95m² to 858m². A choice of touchscreen controllers is available to manage a network of up to 30 HVLS fans.
“It is up to 50% more energy efficient than a gearbox or gear-driven fan motor, and is extremely durable with fewer components,” says Peter Henry, Group IV Product Manager at Fantech. The innovative geometry of Hunter HVLS fan blades was developed in collaboration with an aerospace engineer to ensure large air volumes were generated while minimising noise and energy use. Every fan size in the range features its own blade profile, and unlike other HVLS fans feature configurations of only 4 or 5 blades to maximise efficiency while minimising fan weight. The Hunter HVLS range has been engineered for quick installation and simple commissioning thanks to pre-assembled components and pre-aligned mounting brackets. “Just one installer can easily mount the Hunter HVLS blades,” says Henry.
Not all HVLS fans are the same. Selecting the right size Hunter fans will ensure you achieve the best return on your customer’s investment. Visit www.fantech.com.au/hvls to use the step-by-step Fantech HVLS selection tool and choose the most effective HVLS fans for your application.
Kerry Dumicich in the FMA-ANZ chair “Prior to the formation of FMA-ANZ it was difficult to communicate with government, as they need to consider the views of all relevant parties rather than individual suppliers,” Kerry says.
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Kerry has been a keen contributor to the FMA-ANZ’s technical committee for the past 10 years. This committee assists with the creation of regulation and standards documents by giving specialist advice, answering questions and providing information to help make this information more usable and effective.
Fantech Group Engineering Manager, Kerry Dumicich, has completed his first year as Chairman of the Fan Manufacturers’ Association of Australia and New Zealand (FMA-ANZ). Formed in 2009, the FMA-ANZ represents residential, commercial and industrial fan manufacturers across Australia and New Zealand as well as various associate organisations that may use fans in their products. It is an advocate for its members and provides them with a voice when talking to government.
We also look forward to educating our industry ...
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Kerry has also represented the FMA-ANZ on ME-013 – the committee responsible for the development of International Standards in relation to fans and air curtains. This includes standards for airflow, noise and vibration testing as well as energy efficiency. “I have also provided assistance in modifying various aspects of BCA Section J,” he says. “Currently, we are working with a consultant in creating a Performance Based Design Solution for BCA 2019 Section J5.4.” Kerry accepted the role of FMA-ANZ Chairman in November 2018, taking over from the association’s inaugural Chairman, Simon Bradwell. He hopes to continue working closely with government, organisations and industry in developing standards and regulations to improve our living conditions by providing excellent indoor air quality and reducing greenhouse gas emissions. “We also look forward to educating our industry on how to apply current and upcoming regulations to improve the performance of our buildings.” Fantech is a foundation member of the FMA-ANZ.
Air Design brand turns 40 Celebrating its 40th anniversary, the Air Design brand continues to represent one of the most reliable and energy efficient air movement solutions in the market.
“Fantech Queensland Indoor Air Quality Solutions remains fully committed to quality customer service and delivering the best performing air movement solutions in the market,” says Shawn.
One of Fantech’s most recognisable and trusted brands, Air Design was originally founded in Queensland by mechanical engineer Derick Gattegno in late 1979. The business quickly gained a strong reputation based on high performance products and a well-trained team who delivered quality air management solutions. In 1995, Air Design began developing an industry-leading range of air handling units (AHUs) to complement its quality range of Fantech fans and Q-Tech silencers. Three years later, the business launched the Australian designed and manufactured MODUtherm range of central plant AHUs in Sydney. Further product development followed to meet industry demand, leading to the launch of the MINItherm range of compact AHUs and the SM Series fan coil units (FCUs). Following its acquisition by Fantech’s parent company Elta Group in 2007, Air Design focused on the adoption of modern technologies that optimised performance and efficiency. The Brisbane-based team is now known as Fantech Queensland with the Air Design brand representing the energy efficient and cost-effective range of air handling and fan coil units.
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Many staff have been with the business for many years, including State Manager Shawn Harris who joined Air Design in 1991 as a graduate mechanical engineer.
The experienced staff have an in-depth knowledge of all products, including the JetVent range, Rickard VAV diffusers and the latest EC fans such as the ECOtronic axial series. “The Fantech Queensland team has a thorough understanding of the product performance capabilities in different environments and their suitability in various applications. Air Design AHUs and FCUs have been selected for use in many large projects both in Queensland and around the country. These include new healthcare facilities such as the Gold Coast University Hospital, the Queensland Children’s Hospital, the Victorian Comprehensive Cancer Centre, and the new Royal Adelaide Hospital.
Fully committed to quality customer service
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Early Solid Works 3D model of the first MODUtherm unit launched in 1998
Peter Smith retires Peter Smith joined Air & Noise Engineering – the forerunner of Fantech – in 1980. Interviewed by Jack Pirie and Glen Harries for the role, he fondly recalls those early days working with a small team in Camberwell, Victoria. “When I first joined, we were a relatively small fan supplier,” Peter says. “We had a limited product range and had to push to get accepted over entrenched established brands and products.” Embracing Jack and Glen’s philosophy of providing exceptional customer service, Peter says the small team benefitted from the pair’s experience. “Glen once told me that if you provide the customer service, the sales will follow.” Those words rang true, with Fantech enjoying steady growth in the years following. Peter is proud to have opened and established Fantech’s Adelaide office, and recalls the success and challenges that followed. He says winning the Adelaide University West Campus project – put Fantech on the South Australian map. Another of Peter’s memorable achievements was supplying the fan used in the famous flame of the Sydney 2000 Olympic Games – a true highlight!
WOULD YOU LIKE MORE INFORMATION? Please send me a copy of the latest Fans by Fantech catalogue: Electronic version Hard copy printed version Please send me a copy of the Fans by Fantech Product Selection Program. Please send me a copy of the Hunter HVLS Brochure. Please send me a copy of the JetVent Car Park Ventilation Brochure.
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Naturally, a 39 year career has its ups and downs but Peter says he always worked with fantastic management and colleagues. “Fantech has an unspoken culture,” he says. “We genuinely care that our customers get a quality product for their money that works. Giving customers the results they want is what, I think, kept me going over the years.” Now enjoying his retirement, Peter is thrilled to have a new German Shepherd puppy Evie, and is already planning dog obedience training. He also has plans to travel Australia. He has recently taken up the guitar, and continues to play in a six-piece rock band and duo. Rock on Peter!
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Proud to have established Fantech’s Adelaide Office
Fantech Contacts
After 39 years with Fantech, we thank Peter Smith for his service.
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Australia Adelaide
(08) 8294 0530
Brisbane
(07) 3299 9888
Canberra Darwin
(02) 6280 5511
(08) 8947 0447
Hobart
(03) 6273 6455
Melbourne H.O.
(03) 9554 7845
Newcastle
(02) 4961 6088
Perth
(08) 9209 4999
Sydney
(02) 8811 0400
Townsville
(07) 4775 5222
New Zealand Auckland H.O.
(09) 444 6266
Christchurch
(03) 379 8622
Wellington
(04) 566 0532
Address: .............................................................................................................................. Suburb: ................................... State:.......................... Postcode: ...................................... Tel: .......................................... Fax: ........................... E-mail: ........................................... Photocopy this form and mail the information to: Fantech Pty. Ltd., 42 - 62 Pound Rd West, Dandenong South, Vic. 3175, Australia. E-mail: dvaliotis@fantech.com.au
Visit our website at www.fantech.com.au