PROJECT
INCORPORATING COLD CHAIN
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1 to 3 : Visual captures of the Televis BMS system at SRCC .
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Two Daikin heat pumps were also installed with a heating capacity of 300kW each for the hot water requirements .
Two 5 500 litre Sirac hot water buffer tanks were installed as hot and cold well storage tanks for the hot water element of the project .
Two secondary hot water pumps were also installed for the water distribution to the hot water coils . Again , the pumps are controlled via VSD ' s to maintain a constant water flow .
Two primary pumps controlled on pressure , were installed to supply water at 5 Bar to the humidification spray nozzles
The site as it was nearing completion .
in each room . Class-12 HDPE pipe , with fusion welded fittings was selected for the installation in the chilled water and hot water elements to the 10 rooms .
Class 12-PVC piping with stainless steel headers was installed in the plant room . All piping is insulated with 40mm polyurethane sections and vapour sealed with fibreglass wool , resin , and hardener . With the high humidity conditions , mould growth on standard foster / calico insulation will be difficult to remove or treat . With fibreglass it can be washed and sterilised as required and was thus selected for the installation .
The cooling towers and chillers in the plant room .
ELEMENTS OF DIFFICULTY
As with many steel supplies , a nationwide shortage of HDPE and PVC pipe and fittings was a notable struggle to get stock on for this project due to a shortage of raw material .
A shortage of ethylene flow meters and flame proof solenoids was also a challenge and had to be specially imported for the project .
ENERGY EFFICIENCY
The chillers have stepless screw compressors for capacity control , operating with R134a refrigerant and a COP of 5.2 . The global warming potential ( GWP ) of the refrigerant is 1300 .
Heat pumps have high efficiency scroll compressors operating with R32 refrigerant with a COP of 3.2 and GWP of 675 .
Circulation pumps controlled via VSDs allow optimal energy efficiency of these elements . Control valves are controlled via modulating 0-10VDC inputs for exceptional precision control .
With an 80kW heating requirement for each room , hot water used for heating is not generated via mechanical heater elements . CLA
All piping is insulated with 40mm polyurethane sections and vapour sealed with fibreglass wool , resin , and hardener .
The completed de-greening rooms at the facility . The ethylene cylinders and valves .
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