Geotemperature control performance of two-phase closed thermosyphons in the shady and sunny slopes of an embankment in a permafrost region

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• 作者：Wansheng Pei^a ; Mingyi Zhang^a ; ^{myzhang@lzb.ac.cn} ; Shuangyang Li^a ; Yuanming Lai^a ; Long Jin^b ; Wei Zhai^c ; Fan Yu^a ; Jianguo Lu^a
• 关键词：Geotemperature adjustment ; Two-phase closed thermosyphon embankment ; Shady and sunny slopes ; Cold region ; Global warming
• 刊名：Applied Thermal Engineering
• 出版年：2017
• 出版时间：5 February 2017
• 年：2017
• 卷：112
• 期：Complete
• 页码：986-998
• 全文大小：2715 K
• 卷排序：112

文摘

A model describing the process of air-TPCT-soil coupled heat transfer and heat conduction with phase change is developed. TPCTs can adjust the geotemperature under a permafrost embankment with shady-sunny effect. The ambient solar energy can be transferred into the foundation soil by TPCTs in the cold seasons. The working times and efficiency of TPCTs in the shady and sunny slopes are different. A permafrost embankment with bilateral TPCTs is better able to reduce the shady-sunny slope effect.