Comparison of effective thermal conductivity in closed-loop vertical ground heat exchangers
DC Field | Value | Language |
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dc.contributor.author | Lee, Chulho | - |
dc.contributor.author | Park, Moonseo | - |
dc.contributor.author | Min, Sunhong | - |
dc.contributor.author | Kang, Shin-Hyung | - |
dc.contributor.author | Sohn, Byonghu | - |
dc.contributor.author | Choi, Hangseok | - |
dc.date.accessioned | 2021-09-07T05:51:52Z | - |
dc.date.available | 2021-09-07T05:51:52Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2011-12 | - |
dc.identifier.issn | 1359-4311 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/111083 | - |
dc.description.abstract | Performing a series of in-situ thermal response tests, the effective thermal conductivity of six vertical closed-loop ground heat exchangers was experimentally evaluated and compared to each other, which were constructed in a test bed in Wonju, South Korea. To compare thermal efficiency of the ground heat exchangers in field, the six boreholes were constructed with different construction conditions: i.e., different grouting materials (cement vs. bentonite), different shape of heat exchange pipe-sections (conventional U-loop type vs. new 3 pipe-type), and different additives (silica sand vs. graphite). One observation borehole was installed in the middle of the test site to measure a subsurface temperature change during performing the in-situ thermal response test. From the test results, it can be shown that cement grouting has a higher effective thermal conductivity than that of bentonite grouting, and graphite better performs over silica sand as a thermally enhancing addictive. In addition, a new 3 pipe-type heat exchanger yields less thermal interference between the inlet and outlet pipe than the conventional U-loop type heat exchanger, which results in superior thermal performance. (C) 2011 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | IN-SITU DETERMINATION | - |
dc.title | Comparison of effective thermal conductivity in closed-loop vertical ground heat exchangers | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Choi, Hangseok | - |
dc.identifier.doi | 10.1016/j.applthermaleng.2011.01.016 | - |
dc.identifier.wosid | 000295653600008 | - |
dc.identifier.bibliographicCitation | APPLIED THERMAL ENGINEERING, v.31, no.17-18, pp.3669 - 3676 | - |
dc.relation.isPartOf | APPLIED THERMAL ENGINEERING | - |
dc.citation.title | APPLIED THERMAL ENGINEERING | - |
dc.citation.volume | 31 | - |
dc.citation.number | 17-18 | - |
dc.citation.startPage | 3669 | - |
dc.citation.endPage | 3676 | - |
dc.type.rims | ART | - |
dc.type.docType | Article; Proceedings Paper | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Thermodynamics | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Mechanics | - |
dc.relation.journalWebOfScienceCategory | Thermodynamics | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Engineering, Mechanical | - |
dc.relation.journalWebOfScienceCategory | Mechanics | - |
dc.subject.keywordPlus | IN-SITU DETERMINATION | - |
dc.subject.keywordAuthor | Ground heat exchanger | - |
dc.subject.keywordAuthor | In-situ thermal response test | - |
dc.subject.keywordAuthor | Thermal conductivity | - |
dc.subject.keywordAuthor | Thermal interference | - |
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