倾斜埋管地热换热器稳态温度场分析  

Analyses on steady-state temperature distribution around an inclined borehole in geothermal heat exchangers

作　　者：陈卫翠[1] 崔萍[1] 方肇洪[1] 

机构地区：[1]山东建筑工程学院地源热泵研究所,山东济南250014

出　　处：《山东建筑工程学院学报》2005年第5期30-34,42,共6页Journal of Shandong Institute of Architecture and Engineering

基　　金：国家自然科学基金资助项目(50476040)

摘　　要：对地热换热器中单个倾斜钻孔引起的稳态温度分布进行了分析。在有限长线热源和半无限大介质的假定下,采用虚拟热源法和线性叠加原理,首次导出了倾斜有限长线热源产生的三维稳态温度分布的解析解表达式,并揭示了各参数对该传热过程的影响规律。提出了稳态时地热换热器倾斜孔壁两个代表性温度的定义,并对两者进行了比较,进而给出了可供实际工程应用的简化计算式。An analytical solution of the steady-state temperature distribution has been derived in a semi-infinite medium with an inclined line-source of finite length on the basis of virtual heat source method and linear superposition principle. The impacts of geometrical and physical parameters on this heat transfer process have been discussed accordingly. Two representative steady-state temperatures of the inclined borehole wall are defined as the middle section average temperature and the whole-length integral average temperature. Differences between them are compared, and concise expressions for beth of them are presented for practical engineering applications.

关 键 词：地源热泵 地热换热器 传热 倾斜埋管 

分 类 号：TK529[动力工程及工程热物理—热能工程]