辅助散热地源热泵复合系统地埋管换热特性实验研究  

Experimental Study on Siol Heat Transfer of Hybrid Ground Source Heat Pump System with Auxiliary Cooling

作　　者：巩学梅[1,2] 陈曦[3] 王碧玲[3] 陈光明[1] 

机构地区：[1]浙江大学,杭州310058 [2]宁波工程学院,浙江宁波315211 [3]中国建筑科学研究院,北京100013

出　　处：《建筑科学》2017年第6期68-72,84,共6页Building Science

摘　　要：针对辅助散热复合式地源热泵系统,本文搭建了试验系统,研究供冷工况下辅助散热对地埋管换热特性的影响。结果表明,在辅助散热装置连续投入运行的情况下,辅助散热量占地埋管换热量的比例在10%以内时,辅助散热已经可以明显缓解土壤温升,且与地埋管单位管长换热量的负相关性显著,但影响规律必须结合负荷状况、连续运行时间和运行初始土壤温度来确定。本文提出的分析方法和各因素之间的相关性可作为辅助散热复合式地源热泵系统的设计方法和运行策略研究的理论基础。A test system was established to study the effect of auxiliary cooling on the heat transfer characteristics of the ground heat exchanger of ground source heat pump system with heat recovery in the hot-summer and cold- winter zone. The results show that in the case of continuous operation of the auxiliary cooling device, the auxiliary cooling can significantly alleviate the soil temperature rise when the auxiliary cooling ratio is less than 10% , and the heat exchange of ground heat exchanger has a significantly negative correlation with auxiliary cooling. But the impact must be determined in combination with load condition, running time and initial soil temperature. The proposed analytical method and the correlation between factors can be used to guide the future study on design methods and operational strategies of hybrid ground source heat pump system with auxiliary cooling.

关 键 词：辅助散热 地源热泵复合系统 地埋管换热器 换热特性 

分 类 号：TK523[动力工程及工程热物理—热能工程]