【摘要】：建立了模擬嚴寒地區(qū)土壤熱失衡狀態(tài)下地源熱泵冬季運行情況的實驗裝置,實驗研究了地埋管周圍土壤凍結區(qū)域的分布特征,給出了凍結相變鋒面的平均移動速度。結果表明,土壤凍結區(qū)域呈不對稱性分布,流體進口溫度為-15℃時,埋深為350、700、1 050mm,熱響應區(qū)在40~60mm段,凍結鋒面的平均移動速率分別為5、5、6.67mm/h,熱響應區(qū)在60~80mm段,凍結鋒面的平均移動速率分別為1.54、1.82、1.82mm/h;土壤凍結在一定程度上有利于地埋管與周圍土壤之間的換熱,在嚴寒地區(qū)地源熱泵的設計中應考慮土壤凍結現(xiàn)象。
[Abstract]:An experimental device was established to simulate the operation of ground source heat pump in winter under the condition of soil thermal imbalance in severe cold region. The distribution characteristics of soil freezing area around the buried pipe were studied, and the average moving speed of frozen phase change front was given. The results show that the frozen area of soil is asymmetrical. When the inlet temperature of the fluid is-15 鈩，

本文編號：2492517