地源热泵地埋管换热器实际换热性能评价方法研究  

Actual Heat Transfer Performance Evaluation Method of Buried Vertical Tube

作　　者：杨阳[1] 凌舒 汤盼城 崔全琦 龚延风[1] 

机构地区：[1]南京工业大学,南京210009 [2]南京市住房和城乡建设委员会,南京210009 [3]扬州三盛房地产开发有限公司,江苏扬州225000

出　　处：《建筑科学》2016年第2期36-41,共6页Building Science

摘　　要：地埋管换热器换热效果良好与否关系着整个系统运行效率。本文提出了地埋管换热器换热效果评价方法。该方法以地埋管传热热阻为切入点,针对影响地埋管传热热阻的3个因素:地埋管施工质量、地埋管设计参数及地埋管累计换热量,明确地埋管换热器的评价应排除第3个因素,而着眼于前2个因素,提出了地埋管出水温度与最优热阻评价2种评估方法。The heat transfer effect of the buried vertical tube plays an important role in the efficiency of the whole ground-source heat pump system. A new assessment method of heat transfer effect was proposed using the transfer resistance of buried vertical tube as the entry point. There are three factors affecting the buried vertical tube performance： construction quality, design parameters and accumulative quantity of heat transfer. According to this method, the evaluation of heat transfer should exclude the third objective factor, focusing on the first and second artificial factors. This paper came up with two appraisal methods, namely the outlet water temperature of buried vertical tube and the optimal evaluation of thermal resistance.

关 键 词：地源热泵 地埋管 出水温度 传热热阻 运行效率 性能系数 

分 类 号：TK523[动力工程及工程热物理—热能工程]