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WES-28, 3 units, double water tank system, modular installation
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Stainless water tank 7.5M3
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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) | 
