层状土壤条件下竖直地埋管换热器内水温变化特性  

Variation of water temperature in vertical buried tube heat exchanger under layered soil conditions

作　　者：于艳红 王松庆[1] Yu Yanhong;Wang Songqing(College of Civil Engineering,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学土木工程学院

出　　处：《山西建筑》2019年第13期74-76,共3页Shanxi Architecture

基　　金：国家自然科学基金项目(41702242)

摘　　要：通过数值模拟仿真的方法研究了跨越非饱和/饱和层状土壤条件下竖直地埋管进管温度变化规律,研究结果表明,夏季和冬季工况下,饱和土中监测点温度变化率较大,非饱和土中监测点温度变化率较小。可见分层土壤条件下饱和土的传热性能优于非饱和土传热性能,研究结果为竖直地埋管换热性能的研究提供了新的参考。In this paper,the temperature variation of vertical buried pipes under the condition of spanning unsaturated/saturated layered soils is studied by numerical simulation. The results show that the temperature variation rate of monitoring points in saturated soils is higher than that in unsaturated soils in summer and winter. It can be seen that the heat transfer performance of saturated soils is better than that of unsaturated soils in layered soils. The research results provide a new reference for the study of heat transfer performance of vertical buried pipes.

关 键 词：竖直地埋管换热器 饱和土 非饱和土 水温变化特性 

分 类 号：TK172[动力工程及工程热物理—热能工程]