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| DOI | 10.1016/j.applthermaleng.2016.10.143 |
| Geotemperature control performance of two-phase closed thermosyphons in the shady and sunny slopes of an embankment in a permafrost region | |
| Pei W.; Zhang M.; Li S.; Lai Y.; Jin L.; Zhai W.; Yu F.; Lu J. | |
| 发表日期 | 2017 |
| ISSN | 13594311 |
| 卷号 | 112 |
| 英文摘要 | Heat pipes are a widely-used technology for energy exchange in the world. One of the important issues in the future is how ground heat control can meet the demands of the environmental and engineering stabilities in cold regions. In this paper, a low-temperature gravity assisted heat pipe (two-phase closed thermosyphon, TPCT) is innovatively installed in an embankment with shady and sunny slopes to adjust the geotemperature of the underlying permafrost stratum. The geothermal conditions for three cases—an embankment without TPCTs, an embankment with unilateral TPCTs (UTPCTs), and an embankment with bilateral TPCTs (BTPCTs)—are assessed based on a three-dimensional heat transfer model considering the global warming. The model includes coupled air-TPCT-soil heat transfer and conductive heat transfer with phase change. The numerical results show that: (1) both the UTPCTs and BTPCTs can cool the permafrost stratum, but the UTPCTs aggravate the asymmetric geotemperature caused by the shady-sunny slope effect; and (2) the BTPCTs are better to alleviate the asymmetric geotemperature by controlling the working time and efficiency of the TPCTs under the two slopes. Consequently, the BTPCTs are a more effective engineering measure for embankments affected by the shady-sunny slope effect. © 2016 Elsevier Ltd |
| 英文关键词 | Cold region; Geotemperature adjustment; Global warming; Shady and sunny slopes; Two-phase closed thermosyphon embankment |
| URL | https://www2.scopus.com/inward/record.uri?eid=2-s2.0-84995564832&doi=10.1016%2fj.applthermaleng.2016.10.143&partnerID=40&md5=ef9e826ae45593a4254a6287de347cb4 |
| 语种 | 英语 |
| scopus关键词 | Capillary flow; Flow patterns; Geothermal energy; Global warming; Heat pipes; Heat transfer; Permafrost; Siphons; Temperature; Thermosyphons; Cold regions; Conductive heat transfer; Control performance; Engineering measures; Geotemperature; Shady and sunny slopes; Three dimensional heat transfer; Two-phase closed thermosyphon; Embankments |
| 来源期刊 | Applied Thermal Engineering
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/77265 |
| 推荐引用方式 GB/T 7714 | Pei W.； Zhang M.； Li S.； Lai Y.； Jin L.； Zhai W.； Yu F.； Lu J.. Geotemperature control performance of two-phase closed thermosyphons in the shady and sunny slopes of an embankment in a permafrost region[J]. 中国科学院西北生态环境资源研究院,2017,112. |
| APA | Pei W.； Zhang M.； Li S.； Lai Y.； Jin L.； Zhai W.； Yu F.； Lu J..(2017).Geotemperature control performance of two-phase closed thermosyphons in the shady and sunny slopes of an embankment in a permafrost region.Applied Thermal Engineering,112. |
| MLA | Pei W.； Zhang M.； Li S.； Lai Y.； Jin L.； Zhai W.； Yu F.； Lu J.."Geotemperature control performance of two-phase closed thermosyphons in the shady and sunny slopes of an embankment in a permafrost region".Applied Thermal Engineering 112(2017). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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