A TRNSYS assisting tool for the estimation of ground thermal properties applied to TRT (thermal response test) data: B2G model

[EN] The determination of ground thermal properties is essential to design competitive commercial ground source heat pump systems. A thermal response test (TRT) carried out on site allows the determination of both the conductivity of the ground and the borehole thermal resistance by means of analyti...

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Autores: Cazorla-Marín, Antonio|||0000-0003-3314-0395, Montagud- Montalvá, Carla|||0000-0002-7118-6119, Montero Reguera, Álvaro Enrique|||0000-0002-4165-4743, Magraner, Teresa|||0000-0001-5292-1432, Corberán, José M.
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/182570
Acceso en línea:https://riunet.upv.es/handle/10251/182570
Access Level:acceso abierto
Palabra clave:Ground source heat pump
Borehole heat exchanger
Ground properties estimation
Thermal response test
B2G model
MAQUINAS Y MOTORES TERMICOS
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spelling A TRNSYS assisting tool for the estimation of ground thermal properties applied to TRT (thermal response test) data: B2G modelCazorla-Marín, Antonio|||0000-0003-3314-0395Montagud- Montalvá, Carla|||0000-0002-7118-6119Montero Reguera, Álvaro Enrique|||0000-0002-4165-4743Magraner, Teresa|||0000-0001-5292-1432Corberán, José M.Ground source heat pumpBorehole heat exchangerGround properties estimationThermal response testB2G modelMAQUINAS Y MOTORES TERMICOS[EN] The determination of ground thermal properties is essential to design competitive commercial ground source heat pump systems. A thermal response test (TRT) carried out on site allows the determination of both the conductivity of the ground and the borehole thermal resistance by means of analytical approaches, which require several simplifying assumptions as well as TRT durations of at least fifty hours and constant heat injection. In this context, a detailed dynamic numerical model of the borehole can help reducing both the uncertainties, associated with these simplifying assumptions, and the required test duration. This paper presents a TRNSYS tool to obtain the grout and ground thermal properties by means of a parameter estimation technique in conjunction with a two-dimensional dynamic numerical model, the B2G model, which is able to provide accurate results with a much shorter testing time and without the necessity of a constant heat injection. The methodology to estimate the borehole and ground characteristics has been validated thanks to the analysis of a set of experimental TRTs for U-pipe vertical boreholes carried out in different type of soils and borehole geometries. Results show that, for the analysed tests, it is possible to obtain an accurate and fast estimation of the ground thermal conductivity with reductions of the necessary TRT duration of up to a 70%, with a total uncertainty between +/- 10% and +/- 18%, considering not only the uncertainty introduced by the reduction of the test duration, but also the main sources of uncertainty.ElsevierInstituto Universitario de Tecnologías de la Información y ComunicacionesDepartamento de Termodinámica AplicadaInstituto Universitario de Investigación de Ingeniería EnergéticaEscuela Técnica Superior de Ingeniería IndustrialRepositorio Institucional de la Universitat Politècnica de València Riunet20212021-02-25journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/182570reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 IEDI-2016-00706 AYUDA DE INCORPORACION ESTABLE DE DOCTORES (RAMON Y CAJAL).open accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1825702026-06-13T07:49:27Z
dc.title.none.fl_str_mv A TRNSYS assisting tool for the estimation of ground thermal properties applied to TRT (thermal response test) data: B2G model
title A TRNSYS assisting tool for the estimation of ground thermal properties applied to TRT (thermal response test) data: B2G model
spellingShingle A TRNSYS assisting tool for the estimation of ground thermal properties applied to TRT (thermal response test) data: B2G model
Cazorla-Marín, Antonio|||0000-0003-3314-0395
Ground source heat pump
Borehole heat exchanger
Ground properties estimation
Thermal response test
B2G model
MAQUINAS Y MOTORES TERMICOS
title_short A TRNSYS assisting tool for the estimation of ground thermal properties applied to TRT (thermal response test) data: B2G model
title_full A TRNSYS assisting tool for the estimation of ground thermal properties applied to TRT (thermal response test) data: B2G model
title_fullStr A TRNSYS assisting tool for the estimation of ground thermal properties applied to TRT (thermal response test) data: B2G model
title_full_unstemmed A TRNSYS assisting tool for the estimation of ground thermal properties applied to TRT (thermal response test) data: B2G model
title_sort A TRNSYS assisting tool for the estimation of ground thermal properties applied to TRT (thermal response test) data: B2G model
dc.creator.none.fl_str_mv Cazorla-Marín, Antonio|||0000-0003-3314-0395
Montagud- Montalvá, Carla|||0000-0002-7118-6119
Montero Reguera, Álvaro Enrique|||0000-0002-4165-4743
Magraner, Teresa|||0000-0001-5292-1432
Corberán, José M.
author Cazorla-Marín, Antonio|||0000-0003-3314-0395
author_facet Cazorla-Marín, Antonio|||0000-0003-3314-0395
Montagud- Montalvá, Carla|||0000-0002-7118-6119
Montero Reguera, Álvaro Enrique|||0000-0002-4165-4743
Magraner, Teresa|||0000-0001-5292-1432
Corberán, José M.
author_role author
author2 Montagud- Montalvá, Carla|||0000-0002-7118-6119
Montero Reguera, Álvaro Enrique|||0000-0002-4165-4743
Magraner, Teresa|||0000-0001-5292-1432
Corberán, José M.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Instituto Universitario de Tecnologías de la Información y Comunicaciones
Departamento de Termodinámica Aplicada
Instituto Universitario de Investigación de Ingeniería Energética
Escuela Técnica Superior de Ingeniería Industrial
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Ground source heat pump
Borehole heat exchanger
Ground properties estimation
Thermal response test
B2G model
MAQUINAS Y MOTORES TERMICOS
topic Ground source heat pump
Borehole heat exchanger
Ground properties estimation
Thermal response test
B2G model
MAQUINAS Y MOTORES TERMICOS
description [EN] The determination of ground thermal properties is essential to design competitive commercial ground source heat pump systems. A thermal response test (TRT) carried out on site allows the determination of both the conductivity of the ground and the borehole thermal resistance by means of analytical approaches, which require several simplifying assumptions as well as TRT durations of at least fifty hours and constant heat injection. In this context, a detailed dynamic numerical model of the borehole can help reducing both the uncertainties, associated with these simplifying assumptions, and the required test duration. This paper presents a TRNSYS tool to obtain the grout and ground thermal properties by means of a parameter estimation technique in conjunction with a two-dimensional dynamic numerical model, the B2G model, which is able to provide accurate results with a much shorter testing time and without the necessity of a constant heat injection. The methodology to estimate the borehole and ground characteristics has been validated thanks to the analysis of a set of experimental TRTs for U-pipe vertical boreholes carried out in different type of soils and borehole geometries. Results show that, for the analysed tests, it is possible to obtain an accurate and fast estimation of the ground thermal conductivity with reductions of the necessary TRT duration of up to a 70%, with a total uncertainty between +/- 10% and +/- 18%, considering not only the uncertainty introduced by the reduction of the test duration, but also the main sources of uncertainty.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-02-25
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/182570
url https://riunet.upv.es/handle/10251/182570
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 IEDI-2016-00706 AYUDA DE INCORPORACION ESTABLE DE DOCTORES (RAMON Y CAJAL).
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869414350906720256
score 15.300724

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