Experimental investigation of a R290 domestic heat pump equipped with a thermoelectric-aided sub-cooler

The energy efficiency of heat pumps is an important factor for the sustainability and electrification of domestic heating, especially for the most common air-to-water heat pumps, which are a competitive solution to conventional heating methods. However, novel solutions for cold and moderate climate...

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Autores: Pendzialek, M., Özyildiz, Tufan, Fingas, Rafal, Sánchez, Daniel, Aranguren Garacochea, Patricia, Smolka, Jacek, Haida, Michal
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/54361
Acceso en línea:https://hdl.handle.net/2454/54361
Access Level:acceso abierto
Palabra clave:Heat pump
Propane (R290)
Thermoelectric subcooler
COP enhancement
Heating capacity
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spelling Experimental investigation of a R290 domestic heat pump equipped with a thermoelectric-aided sub-coolerPendzialek, M.Özyildiz, TufanFingas, RafalSánchez, DanielAranguren Garacochea, PatriciaSmolka, JacekHaida, MichalHeat pumpPropane (R290)Thermoelectric subcoolerCOP enhancementHeating capacityThe energy efficiency of heat pumps is an important factor for the sustainability and electrification of domestic heating, especially for the most common air-to-water heat pumps, which are a competitive solution to conventional heating methods. However, novel solutions for cold and moderate climate zones must be developed considering environmentally friendly natural refrigerants such as hydrocarbons. One idea is to introduce a thermoelectric-aided sub-cooler into an air-to-water heat pump to improve the coefficient of performance. Therefore, this work aims to experimentally investigate a novel propane heat pump system with a prototype thermoelectric-aided sub-cooler for domestic heating. Energy analysis was performed to evaluate the energy impact of the sub-cooler in terms of ambient conditions from -10.0 ºC to 5.0 ºC, different water temperatures for heating applications in existing buildings from 45.0 ºC to 55.0 ºC and varying operating conditions of thermoelectric modules in the sub-cooler. The performance of the sub-cooler was evaluated. The results confirm that introducing a thermoelectric-aided sub-cooler can improve the heat pump performance by up to 6.0% and the heating capacity improvement by up to 17.0% for the low ambient temperature of -10.0 ºC. Furthermore, an optimal direct current voltage below 3.0 V was found for every investigated operating condition to ensure the best system coefficient of performance.The authors would like to acknowledge the financial support of the National Science Centre of Poland through project No. UMO-2021/43/D/ST8/02631. Furthermore, the authors would like to acknowledge the support of the projects PID2021-126926OB-C21 and PID2021-126926OB-C22 funded by MCIN/AEI/10.13039/501100011033 and by 'A way of making Europe', respectively. Finally, the work of RF was partially funded by SUT statutory fund No. 08/060/BK_25/1149.ElservierIngenieríaIngeniaritzaInstitute of Smart Cities - ISC2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2454/54361reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-126926OB-C21info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-126926OB-C22© 2025 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/543612026-06-17T12:41:47Z
dc.title.none.fl_str_mv Experimental investigation of a R290 domestic heat pump equipped with a thermoelectric-aided sub-cooler
title Experimental investigation of a R290 domestic heat pump equipped with a thermoelectric-aided sub-cooler
spellingShingle Experimental investigation of a R290 domestic heat pump equipped with a thermoelectric-aided sub-cooler
Pendzialek, M.
Heat pump
Propane (R290)
Thermoelectric subcooler
COP enhancement
Heating capacity
title_short Experimental investigation of a R290 domestic heat pump equipped with a thermoelectric-aided sub-cooler
title_full Experimental investigation of a R290 domestic heat pump equipped with a thermoelectric-aided sub-cooler
title_fullStr Experimental investigation of a R290 domestic heat pump equipped with a thermoelectric-aided sub-cooler
title_full_unstemmed Experimental investigation of a R290 domestic heat pump equipped with a thermoelectric-aided sub-cooler
title_sort Experimental investigation of a R290 domestic heat pump equipped with a thermoelectric-aided sub-cooler
dc.creator.none.fl_str_mv Pendzialek, M.
Özyildiz, Tufan
Fingas, Rafal
Sánchez, Daniel
Aranguren Garacochea, Patricia
Smolka, Jacek
Haida, Michal
author Pendzialek, M.
author_facet Pendzialek, M.
Özyildiz, Tufan
Fingas, Rafal
Sánchez, Daniel
Aranguren Garacochea, Patricia
Smolka, Jacek
Haida, Michal
author_role author
author2 Özyildiz, Tufan
Fingas, Rafal
Sánchez, Daniel
Aranguren Garacochea, Patricia
Smolka, Jacek
Haida, Michal
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ingeniería
Ingeniaritza
Institute of Smart Cities - ISC
dc.subject.none.fl_str_mv Heat pump
Propane (R290)
Thermoelectric subcooler
COP enhancement
Heating capacity
topic Heat pump
Propane (R290)
Thermoelectric subcooler
COP enhancement
Heating capacity
description The energy efficiency of heat pumps is an important factor for the sustainability and electrification of domestic heating, especially for the most common air-to-water heat pumps, which are a competitive solution to conventional heating methods. However, novel solutions for cold and moderate climate zones must be developed considering environmentally friendly natural refrigerants such as hydrocarbons. One idea is to introduce a thermoelectric-aided sub-cooler into an air-to-water heat pump to improve the coefficient of performance. Therefore, this work aims to experimentally investigate a novel propane heat pump system with a prototype thermoelectric-aided sub-cooler for domestic heating. Energy analysis was performed to evaluate the energy impact of the sub-cooler in terms of ambient conditions from -10.0 ºC to 5.0 ºC, different water temperatures for heating applications in existing buildings from 45.0 ºC to 55.0 ºC and varying operating conditions of thermoelectric modules in the sub-cooler. The performance of the sub-cooler was evaluated. The results confirm that introducing a thermoelectric-aided sub-cooler can improve the heat pump performance by up to 6.0% and the heating capacity improvement by up to 17.0% for the low ambient temperature of -10.0 ºC. Furthermore, an optimal direct current voltage below 3.0 V was found for every investigated operating condition to ensure the best system coefficient of performance.
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/54361
url https://hdl.handle.net/2454/54361
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-126926OB-C21
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-126926OB-C22
dc.rights.none.fl_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elservier
publisher.none.fl_str_mv Elservier
dc.source.none.fl_str_mv reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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