摘要
地源热泵系统研究的重点和难点在于地埋管换热,归纳了影响地埋管换热诸多因素,认为受管内流体与土壤温差、管内流态、供回水管间距、回填材料导热系数、运行时间长短等因素影响,通过对单U地埋管换热性能的数值模拟,对比分析了保温地埋管、非保温地埋管、不同保温管长度及不同运行工况下换热情况,比较分析的结果表明,保温地埋管换热能力要高于非保温管,保温管长度要适宜,不同运行工况对地埋管进出口温差和换热量影响不同。
Through to the single U buried pipe heat transfer performance of numerical simulation, Summarizes the influence of many factors to buried pipe heat transfer, comparative analysis of the heat preservation of buried pipe, Not heat preservation of buried pipe, heat transfer under different insulation length and different flow, the results of comparative analysis show that the heat transfer capacity of heat preservation of buried pipe is better than not. insulating nine length should be appropriate.
出处
《制冷与空调（四川）》
2012年第6期536-540,共5页
Refrigeration and Air Conditioning
关键词
单U地埋管
换热性能
数值模拟
single U buffed pipe
heat transfer performance
numerical simulation
