RACA Journal October 2020 | Page 5

Contents HEVAC&R PROJECT 28 Expansion makes Fourways Mall biggest in South Africa CONTRIBUTORS 35 Getting Technical: Viral pandemics prior to Covid-19 38 Support: Compressors and oil pressure failure 41 Responsible Refrigeration: Legally issuing a CoC 43 Back to Basics: Effects of water in an ammonia system 45 Essentials: HVAC, ire & smoke control 46 Letter to the editor: Comments on a published article TECHNICAL 49 Bitzer Refrigerant Report: Part 3 Heating | Energy | Ventilation | Air Conditioning | Refrigeration FEATURE fficient, cost-effective and healthy flows with evaporative cooling page 28 PROJECT Expansion makes Fourways Mall biggest in South Africa TECHNICAL Bitzer refrigerant report: Part 3 COVER SPONSORED BY Evapco South Africa (Pty) Ltd Expansion makes Fourways Mall biggest in South Africa Cover image by RACA Journal COVER SPONSORED BY: Evapco South Africa (Pty) Ltd 19 28 35 www.hvacronline.co.za RACA Journal I October 2020 3