Sa mech eng july15 web

S MECHANICAL A ENGINEER July 2015

Publication of the South African Institution of Mechanical Engineering, incorporating News of Associate Organisations

A NUMBERS GAME MEDICINE FOR AILING ECONOMY THE SOUTH AFRICAN MECHANICAL ENGINEER

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Stocking up on the right solutions: KSB spare parts service KSB stands for outstanding technical expertise and innovative solutions. Whether our customers need to transport fluids or solids, KSB‘s range of tailored spare parts services ensures their systems always work reliably and economically. KSB Service: fast and efficient – also available for products from other manufacturers. Benefit from our ground-breaking technology, expert consulting and comprehensive customer care.

Find out how KSB can help your company on the path to success – when it comes to innovative ideas, we have plenty in stock. www.ksb.com

Our technology. Your success.

Pumps Valves Service n

n

Chris Reay

Chairman of the Working Committee: Communications (SA Institution of Mechanical Engineering)

The inaccuracy or limited information provided by the Member which results in the item being either returned to sender or dumped at the post office

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S MECHANICAL A ENGINEER

The monthly circulation is 3 947

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MachMan Engineering Site Visit, Friday 17 October 2014. In attendance (from left): MachMan Employees (2), Marietjie Jansen v Rensburg (SU Chapter Chairperson), Joel van der Schyff (MachMan Co-owner), Clinton Saunders (SU Chapter Member), Prince Baloyi (SU Chapter Member), Anold Garwi (SU Chapter Member), Wesley John (MachMan Co-owner), DaniĂŤl Smit (Student Member), Lukas Steenkamp (SU Chapter Member)

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Tricom Africa Site Visit. Water Effluent Treatment Plant, Macassar. In attendance (from left): Benjamin Mokobori (Student Member), Anold Garwi (SU Chapter Member), Prince Baloyi (SU Chapter Member), Raymond Botete (Student Member), Charlie Espost (Owner Tricom Africa), (not in picture) Marietjie Jansen v Rensburg (SU Chapter Chairperson)

124th SAIMechE National Annual General Meeting To be held on Wednesday, 5 August 2015.

Venue: Johannesburg (details to be advised).

After the Annual General Meeting all guests are invited to join the President, Office Bearers and Council for a light supper and drinks whilst networking with like‐minded individuals.

The AGM notice including full details will be sent to members shortly or visit the SAIMechE website at www.saimeche.org.za.

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GARNETT CROSS HYDRAULIC COURSES First Registered 1974 : CK 90/38797/23

Training in the Maintenance and Design of Hydraulic Systems Accredited by SAIMechE / Engineering Council of South. Africa - in respect of Continuing Professional Development

Regular Courses are conducted at Johannesburg Durban Cape Town For further details please contact Joanne at +27 11 453-8063 or Email: garnett@cross.co.za Website: www.garnett@cross.com We do not sell or repair Hydraulic equipment. Neither are we affiliated to any such company. We have been dedicated to Hydraulic training since 1974.

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Academic

Kenny Mayhew-Ridgers

Projects

Career Path

Commentary

Achievements

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SAIT

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Neil Cameron, Area General Manager, Johnson Controls Building Efficiency Africa

Read This Issue Online at www.promech.co.za

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Type 30 Reciprocating Air Compressors • 34 models • 6.9 – 345 bar • 1.5 – 30 kW

Abri Henning, general manager at Advantage Air

With the new technology, you can control the volume of air as well as the temperature, a feature which is a very popular choice for hospitals and hotels in particular

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Air Pollution Control Dust Control Systems ❘ Gas Cleaning Product Recovery ❘ Standard Products Turnkey Systems ❘ Powder Processing After Sales Service and Spares

Our product range includes: Cyclones

Bag filters Wet scrubbers

P.O. Box 4051 Cresta 2118, Tel: +27 (0)11 478 0456, Fax: +27 (0)11 478 0371 Email: apc@actom.co.za www.johnthompson.co.za www.actomapc.co.za

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POWER

GENERATION

Country

MEPS

CL X

unknown

X

X

2011

Argentina Australia

EL

Date of Last Activity

Canada

X

China

X

Egypt

X

European Union

X

X

N/A

Hong Kong

X

X

2013

X

2010

X

X

unknown

India Iran

1995 X

X

2013 2007

Israel

X

X

1986

New Zealand

X

X

2005

Peru

X

X

2009

Russia

X

X

2012

South Africa

X

Thailand

2011 X

United States

X

Vietnam

X

T O D A Y

X

2011 X

2013 2009

Table 1: Summary of international EES&L programs for electric water heaters (Source: CLASP online database www.clasponline.org)

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Alissa Johnson

James Lutz

Michael A. McNeil

Economy

Test Parameters

South Africa

48 hour standing loss test, DT 45°C

India

Standing loss, DT 45°C

European Union

Proposed, simulated use test. Eight draw patterns. Separate standing loss test for hot water storage tanks

United States

Simulated use test, six draws at one hour intervals, DT 37.5°C

Table 2 – Test parameters for electric storage tank water heaters

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Theo Covary

Figure 1 – Comparison of standby loss requirements for MEPS and labelling categories for 200 litre geysers

a) b)

c)

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Insulation thickness (mm)

Standing loss (kWh/24h/45째C)

Annual Energy loss (kWh)

CCE (Rand, 15 yr, 10%) (Rand)

38

1.59

580

4,416

na

51

1.41

516

4,644

0.47

57

1.24

454

4,763

0.25

64

1.08

393

4,904

0.30

76

0.91

333

5,154

0.55

102

0.75

275

5,718

1.28

Table 3: Estimated savings and price impact of thicker insulation

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Retail price (Rand)

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Figure 2 – Average South Africa electricity load, current geyser load, estimated efficient geyser load, and estimated HPWH load. Note: There are more recent studies that give geyser use profiles that were also consulted, but are based on a low number of households, so this older profile was used for our estimates

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Country

Incentive (Rand)

Estimated Savings/yr

CCE (Rand, 15 yr, 10%)

Estimated COP

USA, Puget Sound 5,000

1,828

0.36

0.86

1.6

USA, Georgia

2,553

0.13

0.53

2.1

2,500

Australia

6,000

2,357

0.33

2.40

2.1

South Africa

4,490

2,500

0.24

0.89

2.0

Table 4: Summary of select heat pump water heater incentive programs

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Electricity Retail Rate (Rand)

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Back row left to right: Quintus Kilbourn, Antonio Osato, Connor Mercer, Dr C A Henning, Prof S H Connell, Michael Copeland, Fayadh Haffejee, Brandon MacKenzie Front row left to right: Connor Williamson, Professor Godlo, Dutliff Boshoff, Malaika Motsoai

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A large centrifugal mine ventilation fan system from TLT ACTOM

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Simon van Wyk

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A Joint Venture with Bosch Rexroth

72883_HYTEC_Hydraulics Ad_SA Mechanical Engineering.indd 1

2015/06/25 2:15 PM

Figure 2: B4Risk Matrix

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► EIA Process

► Environmental Risk Assessments

► Geographical Information Systems

► Agricultural Assessment and Advise

► Project Managment

► Wetland and Riparian Services

► Natural Resource Services

► Visual Impact Assessments

► Ecological/Biodiversity Services

► Public Participation Process

► Application Assistance

► Game Ranch Management

► Developement Research, Monitoring and Evaluation

N2 Mnini ECO Duties

Plant rescue

Durban Coal Terminal Site Inspection

Ohlanga Pump station ECO Duties

Freightpak Warehouse Site Audit

Public participation Makhabeleni

Ballito Interchange Botanical survey

Site assessment Sundumbili pipeline

l Tel: (031) 303-2835 l Fax: 086 692 2547 l l Email: info@afzelia.co.za l www.afzelia.co.za l

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Skills on Site

Septmeber 2012

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COMPRESSORS

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MARKET FORUM

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MARKET FORUM

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MARKET FORUM

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MARKET FORUM

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On the Move!

Ute Schoeman

Raymond Obermeyer

Pierre Fourie

UPCOMING FEATURES

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AIR CONDITIONING SOLUTIONS

CARRIER, COOLING AT DEEPER LEVELS C A R RIE R ’ S N E W A QUA E DGE ™ C E N TRIF U GA L C HILLE R W IT H VA RI A BLE S PE E D DRI V E FOR MINING A PPLI C ATIONS .

Easier installation Reduced underground space requirements Improved energy efficiency Reduced downtime Improved running and usage efficiency

Carrier’s AquaEdge modular design improves flexibility and easier shaft transportation, and with its sleek product design and smaller footprint it needs less space than ever before. The two-stage compressor allows for higher condenser water temperatures up to 46°C. The soft starts and gradual controlled acceleration of the variable speed drive improves energy efficiency and reduces costs.

The AquaEdge provides a range of voltage and product customization options, and several features allow reduced wear and tear and downtime. This new chiller is a great solution for getting high quality ice and water ever deeper underground.

Improved voltage options Customisation and flexibility

www.carrier.com

AHI-Carrier South Africa (Pty) Ltd A Carrier Joint Venture Company Tel: 011 878 6320/6000 | www.ahi-carriersa.co.za

@2015. Carrier all rights reserved

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