地源热泵垂直套管式换热器传热研究  

Research on heat transfer of double-pipe heat exchanger for ground-source heat pumps

作　　者：王欣[1] 俞亚南[1] 高庆丰[1] 

机构地区：[1]浙江大学

出　　处：《暖通空调》2005年第6期16-19,共4页Heating Ventilating & Air Conditioning

摘　　要：介绍了地源热泵的特性及其发展前景,分析了现有传热模型的局限性。在V.C.Mei传热模型的基础上,结合系统能量方程和热传导方程建立了套管式换热器的传热模型。采用有限元法和有限差分法对埋管周围的温度场进行了数值计算。通过与实测值的对比表明该传热模型能更好地反映出真实的传热过程和传热机理。Presents the characteristics and prospects of ground-source heat pumps and analyses the limitation of existed heat transfer models. Based on the V. C. Mei model,together with the energy conservation equation and heat transfer equation,establishes the heat transfer model of double-pipe heat exchangers. Numerically calculates the temperature field around buried pipes using the finite element method and finite difference method. It is found that the heat transfer model accords with the real heat transfer process and mechanism better by comparing the calculating results with the test data.

关 键 词：套管式换热器 地源热泵 传热模型 垂直 热传导方程 有限差分法 发展前景 能量方程 数值计算 有限元法 传热机理 传热过程 局限性 MEI 温度场 对比表 实测值 基础 

分 类 号：TU833.1[建筑科学—供热、供燃气、通风及空调工程]