Project and Coldfact , they were able to minimise the impact of these delays by shifting available units around into a temporary arrangement while eagerly awaiting the rest of the plant .
Sectional handover of areas was critical for the client to maintain their operation and therefore temporary solutions worked well to achieve a sectional handover on time .
SELECTION OF PRODUCTS , SYSTEM IMPACT ON ELECTRICAL USAGE AND EFFICIENCY The Carrier chillers were selected among many other suppliers due to their optimal performance at both full and part load conditions as well as an economical price tag .
The Trox air handling units were purpose built for this site due to spatial constraints while also ensuring they fit into the project budget . Energy meters have been installed on the main distribution boards ( DBs ) to track the plant power usage and convert this into a measurable plant coefficient of performance ( COP ). The CP team is looking forward to report on this in future .
Calculations have shown that energy savings will be achieved due to the superior energy efficiency ( EER and COP ) of the Carrier units when compared to the old VRV system . The bulk of the energy saving will occur in the intermediate season while heating and cooling at the same time . The combined energy efficiency of the system ( cooling kW + heating kW / input kW ) is a huge improvement over the old two-pipe ( heat pump ) VRV system . The team did not opt to go for any specific green ratings at this stage although the use of best practices and green principles are always a priority to ensure the most economical and costeffective solutions for the client .
The chilled and hot water makeup tanks .
WHAT MADE THIS PROJECT SPECIAL OR UNIQUE ? To refurbish an entire building of this size is no small task . Especially having to do this in a phased approach to ensure
An internal picture showing completed installation .
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RACA Journal I September 2021 www . hvacronline . co . za