DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yoon, Seok | ko |
dc.contributor.author | Lee, Seung-Rae | ko |
dc.contributor.author | Jianfeng Xue | ko |
dc.contributor.author | Kai Zosseder | ko |
dc.contributor.author | Go, Gyu-Hyun | ko |
dc.contributor.author | Park, Hyunku | ko |
dc.date.accessioned | 2016-04-20T06:14:40Z | - |
dc.date.available | 2016-04-20T06:14:40Z | - |
dc.date.created | 2015-11-20 | - |
dc.date.created | 2015-11-20 | - |
dc.date.issued | 2015-11 | - |
dc.identifier.citation | ENERGY CONVERSION AND MANAGEMENT, v.105, pp.393 - 402 | - |
dc.identifier.issn | 0196-8904 | - |
dc.identifier.uri | http://hdl.handle.net/10203/205195 | - |
dc.description.abstract | This paper presents an experimental and numerical study of the results of a thermal performance test using precast high-strength concrete (PHC) energy piles with W and coil-type ground heat exchangers (GHEs). In-situ thermal performance tests (TPTs) were conducted for four days under an intermittent operation condition (8 h on; 16 h off) on W and coil-type PHC energy piles installed in a partially saturated weathered granite soil deposit. In addition, three-dimensional finite element analyses were conducted and the results were compared with the four-day experimental results. The heat exchange rates were also predicted for three months using the numerical analysis. The heat exchange rate of the coil-type GHE showed 10-15% higher efficiency compared to the W-type GHE in the energy pile. However, in considering the cost for the installation of the heat exchanger and cement grouting the additional cost of W-type GHE in energy pile was 200-250% cheaper than coil-type GHE under the condition providing equivalent thermal performance. Furthermore, the required lengths of the W, 3U and coil-type GHEs in the energy piles were calculated based on the design process of Kavanaugh and Rafferty. The additional cost for the W and 3U types of GHEs were also 200-250% lower than that of the coil-type GHE. However, the required number of piles was much less with the coil-type GHE as compared to the W and 3U types of GHEs. They are advantageous in terms of the construction period, and further, selecting the coil-type GHE could be a viable option when there is a limitation in the number of piles in consideration of the scale of the building. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | PUMP SYSTEMS | - |
dc.subject | IN-SITU | - |
dc.subject | PERFORMANCE | - |
dc.subject | TEMPERATURE | - |
dc.subject | MODEL | - |
dc.subject | FOUNDATION | - |
dc.subject | BEHAVIOR | - |
dc.title | Evaluation of the thermal efficiency and a cost analysis of different types of ground heat exchangers in energy piles | - |
dc.type | Article | - |
dc.identifier.wosid | 000363068900035 | - |
dc.identifier.scopusid | 2-s2.0-84939166936 | - |
dc.type.rims | ART | - |
dc.citation.volume | 105 | - |
dc.citation.beginningpage | 393 | - |
dc.citation.endingpage | 402 | - |
dc.citation.publicationname | ENERGY CONVERSION AND MANAGEMENT | - |
dc.identifier.doi | 10.1016/j.enconman.2015.08.002 | - |
dc.contributor.localauthor | Lee, Seung-Rae | - |
dc.contributor.nonIdAuthor | Jianfeng Xue | - |
dc.contributor.nonIdAuthor | Kai Zosseder | - |
dc.contributor.nonIdAuthor | Park, Hyunku | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Energy pile | - |
dc.subject.keywordAuthor | Thermal performance test | - |
dc.subject.keywordAuthor | Heat exchange rate | - |
dc.subject.keywordAuthor | Cost analysis | - |
dc.subject.keywordPlus | PUMP SYSTEMS | - |
dc.subject.keywordPlus | IN-SITU | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | MODEL | - |
dc.subject.keywordPlus | FOUNDATION | - |
dc.subject.keywordPlus | BEHAVIOR | - |
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