Estimation of soil and grout thermal properties through a TSPEP (two-step parameter estimation procedure) applied to TRT (thermal response test) data
In this paper, a versatile TSPEP (two-step parameter estimation procedure) based on a three-dimensional numerical model of a geothermal system is presented. The procedure is applied to both simulated and experimental TRT (thermal response test) data in order to restore the grout and soil thermal con...
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| Veröffentlicht in: | Energy (Oxford) 2011-02, Vol.36 (2), p.839-846 |
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| creator | Bozzoli, F. Pagliarini, G. Rainieri, S. Schiavi, L. |
| description | In this paper, a versatile TSPEP (two-step parameter estimation procedure) based on a three-dimensional numerical model of a geothermal system is presented. The procedure is applied to both simulated and experimental TRT (thermal response test) data in order to restore the grout and soil thermal conductivities and volumetric heat capacities. The TSPEP is essentially a two-step process. The first step uses the parameter estimation procedure, in the early transient regime to restore the grout thermal conductivity and volumetric heat capacity. The values from the first step are used as the input values in the second step, in which the parameter estimation procedure is applied to the late transient regime to restore the soil thermal conductivity and volumetric heat capacity. Further iterations of these two steps can be used to improve the accuracy of the procedure and are discussed in this paper. The time separation used between the estimation of the soil properties and the estimation of the grout properties partially uncouples the two problems and makes the estimation of these four parameters feasible. A criterion to select the time separation is discussed and validated in this paper.
► A versatile Two Step Parameter Estimation Procedure (TSPEP) applied to Thermal Response data is suggested and validated. ► The procedure, based on a numerical three-dimensional model of a geothermal system, is aimed at restoring. ► The proper value of both the soil and the grout thermal conductivities and volumetric heat capacities. ► The procedure is first verified through its application to simulated noisy data. It accurately restores the proper value of both the soil and the grout thermal properties. ► The TSPEP is then validated through its application to a medium-scale set of experimental laboratory data. ► To the authors’ knowledge, three-dimensional models have never been coupled with parameter estimation procedures applied to experimental data under an inverse problem approach |
| doi_str_mv | 10.1016/j.energy.2010.12.031 |
| format | Article |
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► A versatile Two Step Parameter Estimation Procedure (TSPEP) applied to Thermal Response data is suggested and validated. ► The procedure, based on a numerical three-dimensional model of a geothermal system, is aimed at restoring. ► The proper value of both the soil and the grout thermal conductivities and volumetric heat capacities. ► The procedure is first verified through its application to simulated noisy data. It accurately restores the proper value of both the soil and the grout thermal properties. ► The TSPEP is then validated through its application to a medium-scale set of experimental laboratory data. ► To the authors’ knowledge, three-dimensional models have never been coupled with parameter estimation procedures applied to experimental data under an inverse problem approach</description><identifier>ISSN: 0360-5442</identifier><identifier>DOI: 10.1016/j.energy.2010.12.031</identifier><identifier>CODEN: ENEYDS</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; Energy ; Exact sciences and technology ; Geothermal energy ; Ground coupled heat pumps ; Ground heat exchanger ; Grout ; heat ; Heat capacity ; Heat transfer ; mathematical models ; Natural energy ; Numerical modelling ; Parameter estimation ; Soil (material) ; soil properties ; Specific heat ; Thermal conductivity ; Thermal response ; Thermal response test</subject><ispartof>Energy (Oxford), 2011-02, Vol.36 (2), p.839-846</ispartof><rights>2010 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c491t-bc952849029659fbc461d24b931d95d01d75477b5c624a48d8d0d9ba31f3d8b73</citedby><cites>FETCH-LOGICAL-c491t-bc952849029659fbc461d24b931d95d01d75477b5c624a48d8d0d9ba31f3d8b73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0360544210007218$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23860697$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Bozzoli, F.</creatorcontrib><creatorcontrib>Pagliarini, G.</creatorcontrib><creatorcontrib>Rainieri, S.</creatorcontrib><creatorcontrib>Schiavi, L.</creatorcontrib><title>Estimation of soil and grout thermal properties through a TSPEP (two-step parameter estimation procedure) applied to TRT (thermal response test) data</title><title>Energy (Oxford)</title><description>In this paper, a versatile TSPEP (two-step parameter estimation procedure) based on a three-dimensional numerical model of a geothermal system is presented. The procedure is applied to both simulated and experimental TRT (thermal response test) data in order to restore the grout and soil thermal conductivities and volumetric heat capacities. The TSPEP is essentially a two-step process. The first step uses the parameter estimation procedure, in the early transient regime to restore the grout thermal conductivity and volumetric heat capacity. The values from the first step are used as the input values in the second step, in which the parameter estimation procedure is applied to the late transient regime to restore the soil thermal conductivity and volumetric heat capacity. Further iterations of these two steps can be used to improve the accuracy of the procedure and are discussed in this paper. The time separation used between the estimation of the soil properties and the estimation of the grout properties partially uncouples the two problems and makes the estimation of these four parameters feasible. A criterion to select the time separation is discussed and validated in this paper.
► A versatile Two Step Parameter Estimation Procedure (TSPEP) applied to Thermal Response data is suggested and validated. ► The procedure, based on a numerical three-dimensional model of a geothermal system, is aimed at restoring. ► The proper value of both the soil and the grout thermal conductivities and volumetric heat capacities. ► The procedure is first verified through its application to simulated noisy data. It accurately restores the proper value of both the soil and the grout thermal properties. ► The TSPEP is then validated through its application to a medium-scale set of experimental laboratory data. ► To the authors’ knowledge, three-dimensional models have never been coupled with parameter estimation procedures applied to experimental data under an inverse problem approach</description><subject>Applied sciences</subject><subject>Energy</subject><subject>Exact sciences and technology</subject><subject>Geothermal energy</subject><subject>Ground coupled heat pumps</subject><subject>Ground heat exchanger</subject><subject>Grout</subject><subject>heat</subject><subject>Heat capacity</subject><subject>Heat transfer</subject><subject>mathematical models</subject><subject>Natural energy</subject><subject>Numerical modelling</subject><subject>Parameter estimation</subject><subject>Soil (material)</subject><subject>soil properties</subject><subject>Specific heat</subject><subject>Thermal conductivity</subject><subject>Thermal response</subject><subject>Thermal response test</subject><issn>0360-5442</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kc1u1DAUhbMAiVJ4AyS8QbSLDP6LE2-QUDUFpEpUdLq2HPtm6lEmDrYH1AfhfXtHGcGuK0vX3zn36J6qesfoilGmPu1WMEHaPq44PY74igr2ojqjQtG6kZK_ql7nvKOUNp3WZ9XfdS5hb0uIE4kDyTGMxE6ebFM8FFIeIO3tSOYUZ0glQMYR_mwfiCWbu9v1Lbkof2KdC8xktsnuoUAi8N8TlQ78IcElsfM8BvCkRLL5uUHhyTxBnuOUgRTUXRJvi31TvRzsmOHt6T2v7q_Xm6tv9c2Pr9-vvtzUTmpW6t7phndSU65Vo4feScU8l70WzOvGU-bbRrZt3zjFpZWd7zz1ureCDcJ3fSvOq4-LL8b8dcD1Zh-yg3G0E8RDNp2Skoquo0hePEuytm0ZE7oRiMoFdSnmnGAwc8JzpEfDqDl2ZHZm6cgcOzKMG-wIZR9OG2x2dhySnVzI_7RcdIoqfcz8fuEGG43dJmTu79BIYadKCKWQ-LwQgKf7HSCZ7AJM2ENI4IrxMTwf5QmT1LXS</recordid><startdate>20110201</startdate><enddate>20110201</enddate><creator>Bozzoli, F.</creator><creator>Pagliarini, G.</creator><creator>Rainieri, S.</creator><creator>Schiavi, L.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7SU</scope><scope>7TB</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope><scope>7ST</scope><scope>SOI</scope></search><sort><creationdate>20110201</creationdate><title>Estimation of soil and grout thermal properties through a TSPEP (two-step parameter estimation procedure) applied to TRT (thermal response test) data</title><author>Bozzoli, F. ; Pagliarini, G. ; Rainieri, S. ; Schiavi, L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c491t-bc952849029659fbc461d24b931d95d01d75477b5c624a48d8d0d9ba31f3d8b73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Applied sciences</topic><topic>Energy</topic><topic>Exact sciences and technology</topic><topic>Geothermal energy</topic><topic>Ground coupled heat pumps</topic><topic>Ground heat exchanger</topic><topic>Grout</topic><topic>heat</topic><topic>Heat capacity</topic><topic>Heat transfer</topic><topic>mathematical models</topic><topic>Natural energy</topic><topic>Numerical modelling</topic><topic>Parameter estimation</topic><topic>Soil (material)</topic><topic>soil properties</topic><topic>Specific heat</topic><topic>Thermal conductivity</topic><topic>Thermal response</topic><topic>Thermal response test</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bozzoli, F.</creatorcontrib><creatorcontrib>Pagliarini, G.</creatorcontrib><creatorcontrib>Rainieri, S.</creatorcontrib><creatorcontrib>Schiavi, L.</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Environmental Engineering Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Energy (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bozzoli, F.</au><au>Pagliarini, G.</au><au>Rainieri, S.</au><au>Schiavi, L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Estimation of soil and grout thermal properties through a TSPEP (two-step parameter estimation procedure) applied to TRT (thermal response test) data</atitle><jtitle>Energy (Oxford)</jtitle><date>2011-02-01</date><risdate>2011</risdate><volume>36</volume><issue>2</issue><spage>839</spage><epage>846</epage><pages>839-846</pages><issn>0360-5442</issn><coden>ENEYDS</coden><abstract>In this paper, a versatile TSPEP (two-step parameter estimation procedure) based on a three-dimensional numerical model of a geothermal system is presented. The procedure is applied to both simulated and experimental TRT (thermal response test) data in order to restore the grout and soil thermal conductivities and volumetric heat capacities. The TSPEP is essentially a two-step process. The first step uses the parameter estimation procedure, in the early transient regime to restore the grout thermal conductivity and volumetric heat capacity. The values from the first step are used as the input values in the second step, in which the parameter estimation procedure is applied to the late transient regime to restore the soil thermal conductivity and volumetric heat capacity. Further iterations of these two steps can be used to improve the accuracy of the procedure and are discussed in this paper. The time separation used between the estimation of the soil properties and the estimation of the grout properties partially uncouples the two problems and makes the estimation of these four parameters feasible. A criterion to select the time separation is discussed and validated in this paper.
► A versatile Two Step Parameter Estimation Procedure (TSPEP) applied to Thermal Response data is suggested and validated. ► The procedure, based on a numerical three-dimensional model of a geothermal system, is aimed at restoring. ► The proper value of both the soil and the grout thermal conductivities and volumetric heat capacities. ► The procedure is first verified through its application to simulated noisy data. It accurately restores the proper value of both the soil and the grout thermal properties. ► The TSPEP is then validated through its application to a medium-scale set of experimental laboratory data. ► To the authors’ knowledge, three-dimensional models have never been coupled with parameter estimation procedures applied to experimental data under an inverse problem approach</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.energy.2010.12.031</doi><tpages>8</tpages></addata></record> |
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| subjects | Applied sciences Energy Exact sciences and technology Geothermal energy Ground coupled heat pumps Ground heat exchanger Grout heat Heat capacity Heat transfer mathematical models Natural energy Numerical modelling Parameter estimation Soil (material) soil properties Specific heat Thermal conductivity Thermal response Thermal response test |
| title | Estimation of soil and grout thermal properties through a TSPEP (two-step parameter estimation procedure) applied to TRT (thermal response test) data |
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