不同类型地埋管换热器换热性能与经济性分析
Analysis of heat transfer performance and economy of different types of ground heat exchangers
摘要：
对DN25单U形、DN25双U形、DN32单U形、DN32双U形4种不同类型的地埋管换热器进行了冬季取热和夏季排热工况岩土热响应试验。结合换热量测试结果和初投资对经济性进行了分析比较，综合性能的评比结果为：DN32单U形管最佳，DN25单U形管次之，DN25双U形管最差。
关键词：单U形管,双U形管,地埋管换热器,热响应测试,换热性能
Abstract：
Carries out the soil thermal response tests of heat extraction in winter and heat rejection in summer for DN25 single U-tube, DN25 double U-tube, DN32 single U-tube and DN32 double U-tube. Combined with the heat exchanger test result and initial cost, analyses the economy. The result shows that DN32 single U-tube is the best, DN25 single U-tube is the second and DN25 double U-tube is the worst.
Keywords:singleU-tube,doubleU-tube,groundheatexchanger,thermalresponsetest,heattransferperformance