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WES-28, 8 units, double water tank system, modular installation
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Stainless water tank 5+10M3
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Design heat loss of water tank is 3.5℃
when ambient temp=7℃
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Design heat loss of water tank is 4.5℃
when ambient temp=0℃
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Design COP is 2.6 when ambient temp=0℃
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Design COP is 2.0 when ambient temp=-6℃
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Design annual average cost of water
heating≤12Kwh/Ton hot water (heat loss of indoor water pipes and solar
supplement not counted) | 
