摘要
通过工程实验探索地下埋管换热性能及其影响因素,考察地埋管的不同运行工况对地源热泵能效比的影响,探索影响竖向地埋管换热能力的主要因素,初步给出了地源热泵系统最优的运行工况。实验表明,变流量情况下地下埋管的单位深度换热量平均在30W/m左右,而定流量情况下为27W/m左右。连续工况运行时,地下埋管的单位深度换热量平均在25W/m左右,而间歇工况运行时为35W/m左右。
The coefficient of heat transfer of pipe underground was probed through the actual engineering, the different working conditions that affect the COP of the ground source heat pump were studied, and the main factors affect the COP of the ground source heat pump were found, and the optimal working conditions were given. Heat transfer of per depth was indicated through the experiment, which is average 30 W/m or so in varied quantity condition and 27 W/m in stabilize condition, and 25 W/m or so in continuous condition and 35 W/m in intermittent condition.
出处
《建筑热能通风空调》
2009年第6期22-24,共3页
Building Energy & Environment
关键词
地源热泵
换热性能
影响因素
能效比
coefficient of heat transfer, ground source heat pump, COP
