Heat transfer in ground heat exchangers with groundwater advection
In order to estimate the impact of groundwater flow on performance of geothermal heat exchangers in ground source heat pump systems, an equation of conduction–advection is established for heat transfer in porous media, and an analytical transient solution is obtained for a line heat source in an inf...
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| Veröffentlicht in: | International journal of thermal sciences 2004-12, Vol.43 (12), p.1203-1211 |
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| container_title | International journal of thermal sciences |
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| creator | Diao, Nairen Li, Qinyun Fang, Zhaohong |
| description | In order to estimate the impact of groundwater flow on performance of geothermal heat exchangers in ground source heat pump systems, an equation of conduction–advection is established for heat transfer in porous media, and an analytical transient solution is obtained for a line heat source in an infinite medium by means of the Green function analysis. An explicit expression has also been derived of the mean temperature on circles around the heat source. Dimensionless criteria that dictate the process are summarized, and influence of the groundwater advection on the heat transfer is discussed accordingly. Computations show that water advection in the porous medium may alter significantly the conductive temperature distribution, result in lower temperature rises and lead to a steady condition eventually. The hydraulic and thermal properties of soils and rocks influencing the advection heat transfer are briefly summarized. The analytical solution has provided a theoretical basis and practical tool for design and performance simulation of the ground heat exchangers. |
| doi_str_mv | 10.1016/j.ijthermalsci.2004.04.009 |
| format | Article |
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An explicit expression has also been derived of the mean temperature on circles around the heat source. Dimensionless criteria that dictate the process are summarized, and influence of the groundwater advection on the heat transfer is discussed accordingly. Computations show that water advection in the porous medium may alter significantly the conductive temperature distribution, result in lower temperature rises and lead to a steady condition eventually. The hydraulic and thermal properties of soils and rocks influencing the advection heat transfer are briefly summarized. The analytical solution has provided a theoretical basis and practical tool for design and performance simulation of the ground heat exchangers.</description><identifier>ISSN: 1290-0729</identifier><identifier>EISSN: 1778-4166</identifier><identifier>DOI: 10.1016/j.ijthermalsci.2004.04.009</identifier><language>eng</language><publisher>Paris: Elsevier Masson SAS</publisher><subject>Advection ; Applied sciences ; Conduction ; Devices using thermal energy ; Energy ; Energy. Thermal use of fuels ; Exact sciences and technology ; Geothermal energy ; Ground heat exchanger ; Ground source heat pump ; Heat exchangers (included heat transformers, condensers, cooling towers) ; Heat transfer ; Natural energy ; Porous medium</subject><ispartof>International journal of thermal sciences, 2004-12, Vol.43 (12), p.1203-1211</ispartof><rights>2004 Éditions scientifiques et médicales Elsevier SAS</rights><rights>2004 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c420t-7c216e463ffef407fcc377be1825fe0a14db3391abfded0da8d65e9ae08003e03</citedby><cites>FETCH-LOGICAL-c420t-7c216e463ffef407fcc377be1825fe0a14db3391abfded0da8d65e9ae08003e03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1290072904001139$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16141612$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Diao, Nairen</creatorcontrib><creatorcontrib>Li, Qinyun</creatorcontrib><creatorcontrib>Fang, Zhaohong</creatorcontrib><title>Heat transfer in ground heat exchangers with groundwater advection</title><title>International journal of thermal sciences</title><description>In order to estimate the impact of groundwater flow on performance of geothermal heat exchangers in ground source heat pump systems, an equation of conduction–advection is established for heat transfer in porous media, and an analytical transient solution is obtained for a line heat source in an infinite medium by means of the Green function analysis. An explicit expression has also been derived of the mean temperature on circles around the heat source. Dimensionless criteria that dictate the process are summarized, and influence of the groundwater advection on the heat transfer is discussed accordingly. Computations show that water advection in the porous medium may alter significantly the conductive temperature distribution, result in lower temperature rises and lead to a steady condition eventually. The hydraulic and thermal properties of soils and rocks influencing the advection heat transfer are briefly summarized. The analytical solution has provided a theoretical basis and practical tool for design and performance simulation of the ground heat exchangers.</description><subject>Advection</subject><subject>Applied sciences</subject><subject>Conduction</subject><subject>Devices using thermal energy</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Exact sciences and technology</subject><subject>Geothermal energy</subject><subject>Ground heat exchanger</subject><subject>Ground source heat pump</subject><subject>Heat exchangers (included heat transformers, condensers, cooling towers)</subject><subject>Heat transfer</subject><subject>Natural energy</subject><subject>Porous medium</subject><issn>1290-0729</issn><issn>1778-4166</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNqNkF1LwzAUhoMoOKf_oQh613qSds3ind8TBt7odciSkzWla2fSbfrvTdlAL4UDCcmT9yUPIZcUMgq0vKkzV_cV-pVqgnYZAyiyYUAckRHlfJoWtCyP454JSIEzcUrOQqgBgAsQI3I_Q9UnvVdtsOgT1yZL321ak1TDOX7pSrVL9CHZub463O1UH1Fltqh717Xn5MTGerw4rGPy8fz0_jBL528vrw9381QXDPqUa0ZLLMrcWrQFcKt1zvkC6ZRNLIKihVnkuaBqYQ0aMGpqygkKhTAFyBHyMbne565997nB0MuVCxqbRrXYbYJkgpUguIjg7R7UvgvBo5Vr71bKf0sKctAma_lXmxy0yWFgeHx1aFFBq8ZGM9qF34SSRqOURe5xz2H88tahlzEJW43G-ehFms79p-4HGMSLrg</recordid><startdate>20041201</startdate><enddate>20041201</enddate><creator>Diao, Nairen</creator><creator>Li, Qinyun</creator><creator>Fang, Zhaohong</creator><general>Elsevier Masson SAS</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20041201</creationdate><title>Heat transfer in ground heat exchangers with groundwater advection</title><author>Diao, Nairen ; Li, Qinyun ; Fang, Zhaohong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c420t-7c216e463ffef407fcc377be1825fe0a14db3391abfded0da8d65e9ae08003e03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Advection</topic><topic>Applied sciences</topic><topic>Conduction</topic><topic>Devices using thermal energy</topic><topic>Energy</topic><topic>Energy. Thermal use of fuels</topic><topic>Exact sciences and technology</topic><topic>Geothermal energy</topic><topic>Ground heat exchanger</topic><topic>Ground source heat pump</topic><topic>Heat exchangers (included heat transformers, condensers, cooling towers)</topic><topic>Heat transfer</topic><topic>Natural energy</topic><topic>Porous medium</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Diao, Nairen</creatorcontrib><creatorcontrib>Li, Qinyun</creatorcontrib><creatorcontrib>Fang, Zhaohong</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>International journal of thermal sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Diao, Nairen</au><au>Li, Qinyun</au><au>Fang, Zhaohong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Heat transfer in ground heat exchangers with groundwater advection</atitle><jtitle>International journal of thermal sciences</jtitle><date>2004-12-01</date><risdate>2004</risdate><volume>43</volume><issue>12</issue><spage>1203</spage><epage>1211</epage><pages>1203-1211</pages><issn>1290-0729</issn><eissn>1778-4166</eissn><abstract>In order to estimate the impact of groundwater flow on performance of geothermal heat exchangers in ground source heat pump systems, an equation of conduction–advection is established for heat transfer in porous media, and an analytical transient solution is obtained for a line heat source in an infinite medium by means of the Green function analysis. 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| fulltext | fulltext |
| identifier | ISSN: 1290-0729 |
| ispartof | International journal of thermal sciences, 2004-12, Vol.43 (12), p.1203-1211 |
| issn | 1290-0729 1778-4166 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Advection Applied sciences Conduction Devices using thermal energy Energy Energy. Thermal use of fuels Exact sciences and technology Geothermal energy Ground heat exchanger Ground source heat pump Heat exchangers (included heat transformers, condensers, cooling towers) Heat transfer Natural energy Porous medium |
| title | Heat transfer in ground heat exchangers with groundwater advection |
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