吉林大学学报(地球科学版) ›› 2016, Vol. 46 ›› Issue (6): 1808-1814.doi: 10.13278/j.cnki.jjuese.201606204
陈宝义, 岳韬, 曹品鲁, 王如生, 王茂森, 博坤, 龙翔, 鲁思宇
Chen Baoyi, Yue Tao, Cao Pinlu, Wang Rusheng, Wang Maosen, Bo Kun, Long Xiang, Lu Siyu
摘要： 土层的导热系数是影响地源热泵地埋管换热器换热效率的重要因素之一，与土样的密度密切相关。为了提高地源热泵换热器换热效率，本文基于柱热源理论，建立了挤密钻进条件下换热器的传热理论模型，对换热器的换热效率进行了计算，并利用Ansys有限元软件对土层挤密条件下换热器的换热效果进行了数值分析。结果表明，与传统方法相比，土层挤密可有效降低钻孔周围的热阻，U型管换热器的换热效率可提高17%~20%。
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