水源热泵在低温地热生活热水系统的应用

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。结合工程实例,对常用低温地热生活热水系统与水源热泵辅助低温地热生活热水系统进行了经济性比较。水源热泵辅助低温地热生活热水系统可有效降低生活热水系统排水温度及排水量,节能、节水效果显著。

Application of Water Source Heat Pump in Domestic Hot Water System with Low-temperature Geothermal Energy

It is proposed that the return water heater is added in conventional 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.Taking engineering for example,an economic comparison is made between the conventional domestic hot water system with low-temperature geothermal energy and the domestic hot water system with low-temperature geothermal energy assisted by water source heat pump.The latter can effectively reduce discharge water temperature and volume from the domestic hot water system,with remarkable effect of energy-saving and water-saving.