可再生能源2026，Vol.44Issue(3)：329-335,7.
加深式浅层土壤垂直埋管换热性能影响参数研究
Study on the influence parameters of heat exchange performance of the deepened vertical ground heat exchanger in shallow soil
摘要
Abstract
To study the influence of key parameters on the heat exchange performance of the deepened buried pipe,the article establishes a three-dimensional dynamic simulation model of the deepened buried pipe ground source heat pump system,and simulates the thermal short-circuiting degree and heat exchange rate per unit buried depth of the buried pipe under various parameters.The results indicate that the degree of thermal short-circuiting decreases with the increase of pipe diameter,wall thickness,flow velocity and inlet temperature,and increases with the increase of backfill material and soil thermal conductivity.The heat exchange rate per unit buried depth of the buried pipe(q)increases with the increase of pipe diameter,flow velocity,backfill material and soil thermal conductivity.The q is 13.89～27.94 W/m when the pipe diameter is 20～50 mm,19.28～28.72 W/m when the flow velocity is 0.35～1.15 m/s,18.06～19.78 W/m when the backfill material thermal conductivity is 1.7～3.7 W/(m·K),and 17.89～20.22 W/m when the soil thermal conductivity is 1.55～3.55 W/(m·K).However,the heat exchange rate per unit buried depth of the buried pipe decreases with the increase of wall thickness and inlet temperature.The q is 18.51～19.48 W/m when the wall thickness is 2.0～4.0 mm,and 17.61～20.36 W/m when the inlet temperature is 0～4℃.关键词
地源热泵/加深式地埋管/换热性能/单位埋深换热量/热短路Key words
ground source heat pump/deepened buried pipe/heat exchange performance/heat exchange rate per unit buried depth/thermal short-circuiting分类
能源科技引用本文复制引用
郭新锋,王天任,王滋樟,李昊,卜宪标,王令宝..加深式浅层土壤垂直埋管换热性能影响参数研究[J].可再生能源,2026,44(3):329-335,7.基金项目
深地国家科技重大专项项目(2024ZD1003600) （2024ZD1003600）
中国石化集团科技部项目(KLJP24027). （KLJP24027）
