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Influence on thermal response test by groundwater flow in vertical fractures in hard rock
- Gehlin, S E A (author)
-
- Hellström, Göran (author)
- Lund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
- (creator_code:org_t)
- 2003
- 2003
- English.
- In: Renewable Energy. - 0960-1481 .- 1879-0682. ; 28:14, s. 2221-2238
- Journal article (peer-reviewed)
Abstract
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- In this paper different approaches to groundwater flow and its effect in the vicinity of a borehole ground heat exchanger are discussed. The common assumption that groundwater flow in hard rock may be modelled as a homogeneous flow in a medium with an effective porosity is confronted and models for heat transfer due to groundwater flow in fractures and fracture zones are presented especially from a thermal response test point of view. The results indicate that groundwater flow in fractures even at relatively low specific flow rates may cause significantly enhanced heat transfer, although a continuum approach with the same basic assumptions would suggest otherwise. (C) 2003 Elsevier Science Ltd. All rights reserved.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Vattenteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Water Engineering (hsv//eng)
Keyword
- groundwater
- thermal conductivity
- thermal response test
- ground heat exchanger
- borehole
- VA-teknik
Publication and Content Type
- art (subject category)
- ref (subject category)
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