直膨式地源热泵单U埋地换热器传热数值模拟  

Simulation of heat transfer capacity of single U-type underground heat exchanger for direct expansion ground source heat pump

作　　者：郭永辉[1] 侯根富[1] 

机构地区：[1]福建工程学院生态环境与城市建设学院,福建福州350118

出　　处：《福建工程学院学报》2014年第1期26-32,共7页Journal of Fujian University of Technology

基　　金：福建省科技厅科技重大专项(GY-Z09004);福建工程学院科研启动基金(GY-Z13107)

摘　　要：针对直接膨胀式地源热泵单U埋地换热器的传热特性,建立换热器及周围土壤温度场的数学物理模型。模拟计算分析制冷剂进口温度、钻孔几何尺寸与回填材料等因素对单U埋地换热器周围土壤温度的影响。研究结果为合理设计直接膨胀式地源热泵提供了理论参考。A mathematic-physical heat transfer model for single U-type underground heat exchanger and peripheral soil temperature field was established based on the heat transmission characteristics of the underground heat exchanger of the direct expansion ground source heat pump. The influences of the inlet （import） temperature of the refrigerant, drilled size and backfill materials on the soil tem- perature were analysed. The results may provide guidance for the design of the direct expansion ground source heat pump.

关 键 词：直接膨胀 地源热泵 热作用半径 钻孔尺寸 回填材料 

分 类 号：TU831.3[建筑科学—供热、供燃气、通风及空调工程]