... meet more requirements of clients.1, Cooling,2, heating, 3, hot water only,4, cooling+hot water(partial heat recovery),5, cooling ... energy source,including soil,groundwater,surface water etc.).The ground surface is a enormouos solar energy collector,which collects 47% of ... , cinemas, stadiums, recreations, office blocks, factories and so on. water source heat pump water heater (muti-function type)