DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yoon, Seok | ko |
dc.contributor.author | Lee, Seung-Rae | ko |
dc.contributor.author | Go, Gyu-Hyun | ko |
dc.date.accessioned | 2016-04-20T06:21:11Z | - |
dc.date.available | 2016-04-20T06:21:11Z | - |
dc.date.created | 2015-10-29 | - |
dc.date.created | 2015-10-29 | - |
dc.date.created | 2015-10-29 | - |
dc.date.issued | 2015-10 | - |
dc.identifier.citation | ENERGY AND BUILDINGS, v.105, pp.100 - 105 | - |
dc.identifier.issn | 0378-7788 | - |
dc.identifier.uri | http://hdl.handle.net/10203/205276 | - |
dc.description.abstract | The utilization of geothermal energy is constantly increasing for economic and environmental advantages that this brings. Use of horizontal ground-heat exchangers (GHEs) can reduce installation cost and compromise between efficiency and cost. Among many kinds of horizontal GHEs, slinky and spiral-coil-type GHEs show higher thermal efficiency. This paper presents the results of experiments on the heat exchange rates of horizontal slinky, spiral-coil and U-type GHEs installed in a steel box (5 m x 1 m x 1 m). A commercial dry sand was used to fill the steel box, and thermal response tests (TRTs) were conducted for 30 h to evaluate heat-exchange rates according to various GHE-types. The U-type GHE showed the highest heat exchange rate per pipe length, about two and two and half times higher thermal efficiency than that for the horizontal slinky and spiral-coil-type GHEs, respectively. Furthermore, the heat exchange rates per pipe length with a relatively long pitch interval (pitch/diameter = 1) were 100-150% higher than those with a relatively short pitch interval (pitch/diameter = 0.2), in both spiral-coil and horizontal slinky-type GHEs. A cost-efficiency analysis was also performed, and it revealed that the U-type GHE was most economical under conditions of providing equivalent thermal performance. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Evaluation of thermal efficiency in different types of horizontal ground heat exchangers | - |
dc.type | Article | - |
dc.identifier.wosid | 000362143200009 | - |
dc.identifier.scopusid | 2-s2.0-84938894086 | - |
dc.type.rims | ART | - |
dc.citation.volume | 105 | - |
dc.citation.beginningpage | 100 | - |
dc.citation.endingpage | 105 | - |
dc.citation.publicationname | ENERGY AND BUILDINGS | - |
dc.identifier.doi | 10.1016/j.enbuild.2015.07.054 | - |
dc.contributor.localauthor | Lee, Seung-Rae | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Horizontal ground-heat exchanger | - |
dc.subject.keywordAuthor | Thermal response test | - |
dc.subject.keywordAuthor | Heat exchange rate | - |
dc.subject.keywordAuthor | Cost analysis | - |
dc.subject.keywordPlus | FIELD PERFORMANCE | - |
dc.subject.keywordPlus | TRANSFER BEHAVIOR | - |
dc.subject.keywordPlus | RESPONSE TEST | - |
dc.subject.keywordPlus | PUMP SYSTEMS | - |
dc.subject.keywordPlus | ENERGY-PILES | - |
dc.subject.keywordPlus | SIMULATION | - |
dc.subject.keywordPlus | SOILS | - |
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