提出在常用低温地热生活热水系统中增设回水加热器,以回收生活热水系统的排水.对可选的5种回水加热热源——燃煤锅炉、燃油锅炉、燃气锅炉、电锅炉及水源热泵的节能性、经济性进行了比较,提出水源热泵辅助低温地热生活热水系统.%It is proposed that the return water heater is added in convention M domestic hot water system with low-temperature geothermal energy to recovery the discharge water from the domestic hot water system.A comparison is made on the energy saving and economy for five kinds of optional heat sources for heating return water,including coal fired boiler,oil-fired boiler,gas-fired boiler,electric boiler and water source heat pump.A domestic hot water system with low-temperature geothermal energy assisted by water source heat pump is put forward.
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