地源热泵竖直U型管换热器的传热模型分析  

Dicussion on Models of Vertical U-tube Heat Exchanger for Groundsource Heat Pump Systems

作　　者：胡宁[1] 余跃进[1] 

机构地区：[1]南京师范大学动力工程学院,南京210042

出　　处：《建筑节能》2008年第5期16-18,共3页BUILDING ENERGY EFFICIENCY

摘　　要：合理地分析地热换热器中的传热过程是保证地源热泵空调系统经济可靠地运行和降低其初投资的要求,而传热模型又是传热过程的关键所在,因而确定钻孔内传热模型对于设计地源热泵空调系统中的地热换热器具有重要的意义。在此基础上分析了地源热泵地下换热器的3种传热模型,导出了其解析式,并对比分析了各种模型的特点,为地下换热器的设计和分析提供了更精确地方法。Ground source heat pump system features its ground heat exchanger, which contributes to a substantial portion of its initial cost. The heat transfer model is very important, so it is crucial to determine the heat transfer model with higher accuracy for cost-efficient applications of GSHPs. Three transfer models of the heat exchangers of groundsource heat pump were analyzed, and analytical solutions were compared. More accurate method was put forward to design the heat exchangers.

关 键 词：地热热泵系统 竖直U型管换热器 传热模型 热阻 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]