地源热泵地埋管周围土壤温度恢复的模拟

Simulation on Soil Temperature Recovery for Ground Source Heat Pump

地源热泵系统具有节能、环保及高效的优点,但是由于其初投资较高,制约了该技术的发展,基于土壤在该系统中发挥的作用,有必要对其进行研究。土壤传热能力比较缓慢,所以机组连续运行会导致埋管与土壤的换热效果越来越差。通过间歇运行模式得出土壤温度在恢复期的变化规律,有助于提高埋管与土壤的换热效率,降低该系统的初投资,具有一定的现实意义。

Ground source heat pump features for energy-saving,environmental protection and efficiency.Its initial investment is higher than traditional central air-conditioning systems,which restricts the development of this technology.So it is necessary to research the effect of soil on GSHP.For the heat transfer ability of soil is slow,the continual running of the units will lead to worse and worse effect.Some chang-ing rules of geothermal temperature in recovery by intermittent operation mode are gained,which helps to improve the heat transfer effect be-tween buried U-tube and soil,and then decrease the initial investment,it has certain realistic significance.