Africa ’ s only monthly publication serving the HEVAC & R sectors

ISSN 1812-772X

ISSN 1812-772X

June 2021 I Vol 37 No 4

PUBLISHER DETAILS

PUBLISHED BY INTERACT MEDIA DEFINED ( PTY ) LTD 13A Riley Rd , Bedfordview 2009 , South Africa PO Box 695 , Edenvale , 1610 Tel : + 27 ( 0 ) 11 579 4940 | Web : www . interactmedia . co . za

PUBLISHING UNIT LEAD : Dale Macnamara | dale @ interactmedia . co . za EDITOR : Benjamin Brits | benjamin @ interactmedia . co . za

ADVERTISING EXTERNAL SALES Dale Macnamara | sales @ interactmedia . co . za Zeldalee du Toit | zeldalee @ interactmedia . co . za

SUBSCRIPTIONS : Maxlee Marange | mmarange @ interactmedia . co . za Ralph Shongwe | ralph @ interactmedia . co . za

SUB-EDITOR : Tarren Bolton | tarren @ interactmedia . co . za TECHNICAL SUB-EDITOR : Charles Nicolson

DESIGN AND LAYOUT : Glyniss Bone | glyniss @ interactmedia . co . za PROCESS COORDINATOR : Lebo Bucibo | lebo @ interactmedia . co . za

CONTRIBUTORS Charles Nicolson , Grant Laidlaw , Andrew Perks and Samkelwa Xaba

ADVISORY COMMITTEE Martin Braun , Charles Nicolson , Grant Laidlaw , John Parry , Alec Johannsen , Charel Marais , Annemarie Wake , Ralph Cramer and Pat Burke .

MANAGEMENT Operations / Finance : Sean Macnamara | sean @ interactmedia . co . za Finance : Laetitia Arnott | laetitia @ interactmedia . co . za

PRINTER : Typo Colour Printing Specialists DISTRIBUTION / MAILING : distribution @ interactmedia . co . za

ENVIRONMENT-FRIENDLY PRINTING : All paper is sourced from the Forest Stewardship Council and Chain of Custody-certified suppliers . All wastepaper from the plant is recycled . All used plates are recycled . All new printing equipment is purchased for low energy-consumption levels and low volatile organic-compound emissions .

DISCLAIMER : While every reasonable precaution has been taken to ensure the accuracy of the advice and information given , neither the editor , publisher , proprietor , staff , nor any official body represented or published in this issue , will accept responsibility for any damages , loss , injuries , or false claims that may arise or be made in the content . Including but not limited to any references to gender , religion , politics , ethnicity , or personal preferences of any editorial contribution whether an industry expert , advertiser through sponsored or paid content or contract writer . We subscribe to the Code of Conduct of the Advertising Regulatory Board ( info @ arb . co . za ) and the Press Ombudsman ( see below ). Disclaimers by individual companies are hereby overridden by this disclaimer .

REGULARS 1 Hot and chilled 21 Personality profile : Derrick Craig 45 Quote of the month 59 Products 64 Final Fix

NEWS 5 SANEDI rolls out cool roofs challenge

INTERNATIONAL NEWS 6 The new whitest paint is here – and it ’ s the coolest . Literally . 9 ASHRAE and UNEP launch three-year workplan

FEATURE 11 Fans and ventilation : The middle-points in air quality and distribution 22 FRIGAIR Showcase : The new countdown begins !

CONTRIBUTORS 43 Getting technical : Herd immunity 47 Support : Refrigerant cylinder colour-coding 49 Back to basics : PPE – if only we all had the right equipment and the correct training 51 Women in HVACR : Students receive advice from a mentor 55 Contractor ’ s corner : Avoiding disciplinary action through non-compliance

COPYRIGHT : Reproduction of any of the content and photographs is expressly forbidden in terms of the Copyright Act of 1987 with all amendments . All requests to reproduce must be made in writing to the publisher and such confirmation must be given in writing before proceeding . A copy of where the reproduction was published must be supplied to the publisher at the above address . All publication and exhibition titles are registered as trademarks in terms of the Trademarks Act of 1993 and are held by Interact Media Defined ( Pty ) Ltd , Reg No 2014 / 092774 / 07 .

COVER SPONSORED BY : FRIGAIR

2022

PRESS OMBUDSMAN : PRESS OMBUDSMAN : This publication has committed itself to maintain the highest standards of journalism as embodied in the Press Code of Professional Practice . If you believe we have failed to report news and comment accurately , honestly and fairly , you may lodge a complaint with the Press Ombudsman either by email , letter , or by telephoning the office for the procedure to be followed . Tel : + 27 ( 0 ) 11 484 3612 / 8 Email : enquiries @ ombudsman . org . za | carmelr @ ombudsman . org . za Website : www . ombudsman . org . za for the press code and / or the complaints form .

22

FRIGAIR Showcase : The new countdown begins !

2022

Heating | Energy | Ventilation | Air Conditioning | Refrigeration

FEATURE Fans and ventilation : The middle-points in air quality and distribution

FEATURE FRIGAIR Showcase : The new countdown begins !

CONTRIBUTORS Refrigerant cylinder colour-coding

The new countdown begins !

1 - 3 JUNE 2022

GALLAGHER , MIDRAND , JHB www . frigairexpo . co . za

COVER SPONSORSHIP FRIGAIR