Thermal conductivity distributed from a Thermal Response Test (TRT) in a borehole heat exchanger (BHE)

The Thermal Response Test (TRT) is the most versatile tool to determine the thermal propriety of the underground for designing and sizing of the borehole heat exchangers (BHE). The TRT permits to get the average thermal conductivity (λ) across the whole stratigraphy, the thermal resistance (Rb) of t...
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Autor*in:	A. Blasi [verfasserIn] M. Menichetti [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch ; Italienisch

Erschienen:	2012

Schlagwörter:	Thermal Response Test (TRT), thermal conductivity, borehole heat exchanger (BHE), vertical temperature log, geoexchange

Übergeordnetes Werk:	In: Acque Sotterranee - PAGEPress Publications, 2017, 1(2012), 3
Übergeordnetes Werk:	volume:1 ; year:2012 ; number:3

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.7343/as-010-12-0027

Katalog-ID:	DOAJ009784624

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spelling	10.7343/as-010-12-0027 doi (DE-627)DOAJ009784624 (DE-599)DOAJ8b0503057e964272be415b53bd5499a8 DE-627 ger DE-627 rakwb eng ita QE1-996.5 A. Blasi verfasserin aut Thermal conductivity distributed from a Thermal Response Test (TRT) in a borehole heat exchanger (BHE) 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Thermal Response Test (TRT) is the most versatile tool to determine the thermal propriety of the underground for designing and sizing of the borehole heat exchangers (BHE). The TRT permits to get the average thermal conductivity (λ) across the whole stratigraphy, the thermal resistance (Rb) of the borehole / grout / rocks and the undisturbed temperature of the soil (Tg). The ground temperature is influenced by climate, topographical, geological and hydrological factors. Vertical temperature changes allows to get the relationships with the lithology and especially with the groundwater. Vertical temperature log, acquired during and after the TRT, permits to calculate the distributed thermal conductivity over each stratigraphic interval. This method permits to verify how the different lithologies and the groundwater contribute to the heat exchange in the borehole/ground system, so called geoexchange. The experimental site test indicates that the marls and clayed-marls levels show a higher thermal inertia than the sandstone ones and then lower values of thermal conducivity. The sandstones have a higher thermal conductivity with a rapid cooling and they provide the main contribution to the ground heat exchange. The distributed thermal conductivity is an useful tool for designing the BHE with the best performance, a better economic return and with low environmental impacts. Thermal Response Test (TRT), thermal conductivity, borehole heat exchanger (BHE), vertical temperature log, geoexchange Geology M. Menichetti verfasserin aut In Acque Sotterranee PAGEPress Publications, 2017 1(2012), 3 (DE-627)1760600091 22806458 nnns volume:1 year:2012 number:3 https://doi.org/10.7343/as-010-12-0027 kostenfrei https://doaj.org/article/8b0503057e964272be415b53bd5499a8 kostenfrei http://www.acquesotterranee.online/index.php/acque/article/view/151 kostenfrei https://doaj.org/toc/1828-454X Journal toc kostenfrei https://doaj.org/toc/2280-6458 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 1 2012 3
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allfieldsGer	10.7343/as-010-12-0027 doi (DE-627)DOAJ009784624 (DE-599)DOAJ8b0503057e964272be415b53bd5499a8 DE-627 ger DE-627 rakwb eng ita QE1-996.5 A. Blasi verfasserin aut Thermal conductivity distributed from a Thermal Response Test (TRT) in a borehole heat exchanger (BHE) 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Thermal Response Test (TRT) is the most versatile tool to determine the thermal propriety of the underground for designing and sizing of the borehole heat exchangers (BHE). The TRT permits to get the average thermal conductivity (λ) across the whole stratigraphy, the thermal resistance (Rb) of the borehole / grout / rocks and the undisturbed temperature of the soil (Tg). The ground temperature is influenced by climate, topographical, geological and hydrological factors. Vertical temperature changes allows to get the relationships with the lithology and especially with the groundwater. Vertical temperature log, acquired during and after the TRT, permits to calculate the distributed thermal conductivity over each stratigraphic interval. This method permits to verify how the different lithologies and the groundwater contribute to the heat exchange in the borehole/ground system, so called geoexchange. The experimental site test indicates that the marls and clayed-marls levels show a higher thermal inertia than the sandstone ones and then lower values of thermal conducivity. The sandstones have a higher thermal conductivity with a rapid cooling and they provide the main contribution to the ground heat exchange. The distributed thermal conductivity is an useful tool for designing the BHE with the best performance, a better economic return and with low environmental impacts. Thermal Response Test (TRT), thermal conductivity, borehole heat exchanger (BHE), vertical temperature log, geoexchange Geology M. Menichetti verfasserin aut In Acque Sotterranee PAGEPress Publications, 2017 1(2012), 3 (DE-627)1760600091 22806458 nnns volume:1 year:2012 number:3 https://doi.org/10.7343/as-010-12-0027 kostenfrei https://doaj.org/article/8b0503057e964272be415b53bd5499a8 kostenfrei http://www.acquesotterranee.online/index.php/acque/article/view/151 kostenfrei https://doaj.org/toc/1828-454X Journal toc kostenfrei https://doaj.org/toc/2280-6458 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 1 2012 3
allfieldsSound	10.7343/as-010-12-0027 doi (DE-627)DOAJ009784624 (DE-599)DOAJ8b0503057e964272be415b53bd5499a8 DE-627 ger DE-627 rakwb eng ita QE1-996.5 A. Blasi verfasserin aut Thermal conductivity distributed from a Thermal Response Test (TRT) in a borehole heat exchanger (BHE) 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Thermal Response Test (TRT) is the most versatile tool to determine the thermal propriety of the underground for designing and sizing of the borehole heat exchangers (BHE). The TRT permits to get the average thermal conductivity (λ) across the whole stratigraphy, the thermal resistance (Rb) of the borehole / grout / rocks and the undisturbed temperature of the soil (Tg). The ground temperature is influenced by climate, topographical, geological and hydrological factors. Vertical temperature changes allows to get the relationships with the lithology and especially with the groundwater. Vertical temperature log, acquired during and after the TRT, permits to calculate the distributed thermal conductivity over each stratigraphic interval. This method permits to verify how the different lithologies and the groundwater contribute to the heat exchange in the borehole/ground system, so called geoexchange. The experimental site test indicates that the marls and clayed-marls levels show a higher thermal inertia than the sandstone ones and then lower values of thermal conducivity. The sandstones have a higher thermal conductivity with a rapid cooling and they provide the main contribution to the ground heat exchange. The distributed thermal conductivity is an useful tool for designing the BHE with the best performance, a better economic return and with low environmental impacts. Thermal Response Test (TRT), thermal conductivity, borehole heat exchanger (BHE), vertical temperature log, geoexchange Geology M. Menichetti verfasserin aut In Acque Sotterranee PAGEPress Publications, 2017 1(2012), 3 (DE-627)1760600091 22806458 nnns volume:1 year:2012 number:3 https://doi.org/10.7343/as-010-12-0027 kostenfrei https://doaj.org/article/8b0503057e964272be415b53bd5499a8 kostenfrei http://www.acquesotterranee.online/index.php/acque/article/view/151 kostenfrei https://doaj.org/toc/1828-454X Journal toc kostenfrei https://doaj.org/toc/2280-6458 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 1 2012 3
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callnumber-first	Q - Science
author	A. Blasi
spellingShingle	A. Blasi misc QE1-996.5 misc Thermal Response Test (TRT), thermal conductivity, borehole heat exchanger (BHE), vertical temperature log, geoexchange misc Geology Thermal conductivity distributed from a Thermal Response Test (TRT) in a borehole heat exchanger (BHE)
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topic_title	QE1-996.5 Thermal conductivity distributed from a Thermal Response Test (TRT) in a borehole heat exchanger (BHE) Thermal Response Test (TRT), thermal conductivity, borehole heat exchanger (BHE), vertical temperature log, geoexchange
topic	misc QE1-996.5 misc Thermal Response Test (TRT), thermal conductivity, borehole heat exchanger (BHE), vertical temperature log, geoexchange misc Geology
topic_unstemmed	misc QE1-996.5 misc Thermal Response Test (TRT), thermal conductivity, borehole heat exchanger (BHE), vertical temperature log, geoexchange misc Geology
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title	Thermal conductivity distributed from a Thermal Response Test (TRT) in a borehole heat exchanger (BHE)
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title_full	Thermal conductivity distributed from a Thermal Response Test (TRT) in a borehole heat exchanger (BHE)
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title_sort	thermal conductivity distributed from a thermal response test (trt) in a borehole heat exchanger (bhe)
callnumber	QE1-996.5
title_auth	Thermal conductivity distributed from a Thermal Response Test (TRT) in a borehole heat exchanger (BHE)
abstract	The Thermal Response Test (TRT) is the most versatile tool to determine the thermal propriety of the underground for designing and sizing of the borehole heat exchangers (BHE). The TRT permits to get the average thermal conductivity (λ) across the whole stratigraphy, the thermal resistance (Rb) of the borehole / grout / rocks and the undisturbed temperature of the soil (Tg). The ground temperature is influenced by climate, topographical, geological and hydrological factors. Vertical temperature changes allows to get the relationships with the lithology and especially with the groundwater. Vertical temperature log, acquired during and after the TRT, permits to calculate the distributed thermal conductivity over each stratigraphic interval. This method permits to verify how the different lithologies and the groundwater contribute to the heat exchange in the borehole/ground system, so called geoexchange. The experimental site test indicates that the marls and clayed-marls levels show a higher thermal inertia than the sandstone ones and then lower values of thermal conducivity. The sandstones have a higher thermal conductivity with a rapid cooling and they provide the main contribution to the ground heat exchange. The distributed thermal conductivity is an useful tool for designing the BHE with the best performance, a better economic return and with low environmental impacts.
abstractGer	The Thermal Response Test (TRT) is the most versatile tool to determine the thermal propriety of the underground for designing and sizing of the borehole heat exchangers (BHE). The TRT permits to get the average thermal conductivity (λ) across the whole stratigraphy, the thermal resistance (Rb) of the borehole / grout / rocks and the undisturbed temperature of the soil (Tg). The ground temperature is influenced by climate, topographical, geological and hydrological factors. Vertical temperature changes allows to get the relationships with the lithology and especially with the groundwater. Vertical temperature log, acquired during and after the TRT, permits to calculate the distributed thermal conductivity over each stratigraphic interval. This method permits to verify how the different lithologies and the groundwater contribute to the heat exchange in the borehole/ground system, so called geoexchange. The experimental site test indicates that the marls and clayed-marls levels show a higher thermal inertia than the sandstone ones and then lower values of thermal conducivity. The sandstones have a higher thermal conductivity with a rapid cooling and they provide the main contribution to the ground heat exchange. The distributed thermal conductivity is an useful tool for designing the BHE with the best performance, a better economic return and with low environmental impacts.
abstract_unstemmed	The Thermal Response Test (TRT) is the most versatile tool to determine the thermal propriety of the underground for designing and sizing of the borehole heat exchangers (BHE). The TRT permits to get the average thermal conductivity (λ) across the whole stratigraphy, the thermal resistance (Rb) of the borehole / grout / rocks and the undisturbed temperature of the soil (Tg). The ground temperature is influenced by climate, topographical, geological and hydrological factors. Vertical temperature changes allows to get the relationships with the lithology and especially with the groundwater. Vertical temperature log, acquired during and after the TRT, permits to calculate the distributed thermal conductivity over each stratigraphic interval. This method permits to verify how the different lithologies and the groundwater contribute to the heat exchange in the borehole/ground system, so called geoexchange. The experimental site test indicates that the marls and clayed-marls levels show a higher thermal inertia than the sandstone ones and then lower values of thermal conducivity. The sandstones have a higher thermal conductivity with a rapid cooling and they provide the main contribution to the ground heat exchange. The distributed thermal conductivity is an useful tool for designing the BHE with the best performance, a better economic return and with low environmental impacts.
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title_short	Thermal conductivity distributed from a Thermal Response Test (TRT) in a borehole heat exchanger (BHE)
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