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

ISSN 1812-772X

ISSN 1812-772X

November 2022 I Vol 38 No 9

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

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SUB-EDITOR : David Smith | david @ interactmedia . co . za

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REGULAR CONTRIBUTORS Grant Laidlaw , Barney Richardson , and Michael Young

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

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When measurement matters

Apr - Jun 2022 Print : 2 453 Online : 3 874

NEWS 3 Amendments proposed for electricity regulation act 6 Individual toolsets hinder digital transformation

INTERNATIONAL NEWS 9 Assessing the thermal properties of 3D printed walls 11 Novel hydrogel-glass design for energy savings in buildings 13 Data centre expansion creates attractive sources of heat 15 US DoE launches new energy earthshot to slash cost of geothermal

EVENTS AND EXHIBITIONS 23 First in-person technical talk in over two years

FEATURES 25 Split units – still suitable in many applications

PROJECTS Your project belongs here ! Contact benjamin @ interactmedia . co . za to participate

CONTRIBUTORS 32 Support : Competency levels and registration of personnel 35 Responsible refrigeration : Introduction of online CoC , discontinuation of paper-form 37 Professionals who care : The easiest way to kill performance of DX cooling 38 HVAC health : Mould and HVAC 41 Business : Addressing industry skills shortage

– engaging new QCTO framework 43 Technology : Complex ransomware operations and the ransomware economy 46 Contractors corner : Correct machine and consumable combinations 48 Legal : ESG – tickbox exercise or risk differentiator ?

25

Split units – still suitable in many

applications

RACA Journal I November 2022

Heating | Energy | Ventilation | Air Conditioning | Refrigeration

INTERNATIONAL NEWS Novel hydrogel-glass design for energy savings in buildings

ASSOCIATIONS Growing the role of women in the built environment

EVENTS AND EXHIBITIONS First in-person technical talk in over two years

www . refrigerationandaircon . co . za

FEATURE Split units – still suitable in many applications

Cover Credit : Fourways Group