RACA Journal June 2019 | Page 47

Projects 4 5 The accumulator vessels have been designed to allow for future expansion of the refrigeration plant. One ammonia to glycol plate heat exchanger is used to cool down the glycol which is then pumped to the HEVAC&R system installed by others. One water to glycol plate heat exchanger is used to heat up the glycol which is then pumped through tubes underneath the freezers for underfloor heating. The water is heated by the shell and tube heat exchangers of the compressor oil cooling. 6 The monitoring system is set up to send a report of all the various temperatures to the client every day. 1. 2. 3. 4. 5. 6. Ammonia plantroom. Low-stage accumulator vessel with gauge panel. Mycom reciprocating compressor. Freezer store entrance. Main MCC panel. Inside one of the freezer rooms. www.hvacronline.co.za RACA Journal I June 2019 45