某写字楼地源热泵冬季供暖性能测试及节能分析

Heating Performance Test of the Soil Source Heat Pump in One Office Building in Winter and Analysis of Its Energy Saving

测试了北京某写字楼地源热泵机组在不同供暖期(初寒期和末寒期)的运行参数,分析了热泵机组运行性能。发现热泵机组的性能系数COP和系统能效比EER在不同供暖期相差较大;针对在埋管水流量、进出口水温差相差不大的情况下,埋管水出口温度经过一个供暖期后降低了2.96℃的情况;分析了产生的原因,并提出优化地源热泵设计的意见。与空气源热泵、锅炉取暖进行了比较,证明了该系统的节能性。

The author has tested two different heating periods （called initial cold period and final cold period） performance parameters of the soil source heat pump unit in one office building in Beijing, based on which the writer has analyzed the operative performance of the unit. From the test results,it can be gained that the coefficient of performance （COP） of the heat pump unit and the system energy efficient ratio （EER） changes much in different heating periods; It is clear that the outlet water temperature of burying pipe decline 2.96℃ after the whole winter season ,although water quantity of flow in the burying pipe is almost the same and variation between inlet and outlet water temperature can be negligible. The paper gives reasons for the above station and suggestions to optimize the design of the soil source heat pump. Then it proves energy saving of this system by comparing with air source heat pump and heating boiler.