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

ISSN 1812-772X

ISSN 1812-772X

August 2024 I Vol 40 No 6

PUBLISHER DETAILS

PUBLISHED BY INTERACT MEDIA DEFINED ( PTY ) LTD 13A Riley Rd , Bedfordview , 2007 , 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 : Eamonn Ryan | eamonn @ interactmedia . co . za

ADVERTISING EXTERNAL SALES Dale Macnamara | sales @ interactmedia . co . za

SUBSCRIPTIONS : Ralph Shongwe | ralph @ interactmedia . co . za

SUB-EDITOR : Tanya Olckers | tanya @ interactmedia . co . za

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

REGULARS 1 Hot and chilled 29 Eugene le Roux ’ s 50 years in HVAC & R 44 Products 45 Brandlistings 48 Final fix

INTERNATIONAL NEWS 3 Mayewaka celebrates 100th anniversary with new initiatives

NEWS 5 Making digitisation and sustainability work for the channel 6 Public Procurement Bill paves way forward for new sub-contracting model

REGULAR CONTRIBUTORS Grant Laidlaw , Ryan Rennie and Michael Young

ADVISORY COMMITTEE Grant Laidlaw , John Parry , Pat Burke , Graeme Page and Willem van der Westhuizen

ASSOCIATIONS 9 Strategies for IECC 2021 compliance in hot climates with air-cooled chillers 11 Dreosti Memorial Lectures 2024

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 .

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 .

EVENTS AND EXHIBITIONS 13 We speak to exhibitors at FRIGAIR 2025

BUSINESS 15 Metraclark hosts series of customer evenings 17 BUTEC unveils unified branding strategy for subsidiaries

FEATURE 21 BMS revolution in HVAC

PROJECT 31 The Kent chooses R32 multi-split HVAC system

CONTRIBUTORS 35 Welcome to the solutions page 40 How to cool the data centre in the 21 st century

( Part 7 )

TECHNICAL 41 Guided approach to applying UV-C to mechanical ventilation systems

Refrigeration and Air Conditioning Africa

ISSN1812-772X | R92.00 August 2024 | Vol 40 No . 6