Simulation models for tankless gas water heaters
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/27206 |
Resumo: | There is a growing concern about to the scarceness of natural resources and the emissions problematic. Water heating is a relevant part of a household’s energy use, and tankless gas water heaters (TGWH) are widely used. There are design and engineering challenges to develop more efficient devices, with lower emissions of pollutant gases and providing comfort improvements from the user point of view. The main objective of the present work is to provide mathematical models to evaluate and support the development of different TGWH configurations. By simulation, different hardware configurations and advanced control strategies can be tested and optimized regarding energy saving, reducing of harmful environmental emissions and increase of comfort indices by reducing temperature undershoots and overshoots. The TGWH individual components are modelled, laboratory tests are performed and the heat cell is parametrized with experimental data. Configurations with and without bypass function are performed for several water flow rates and setpoint temperature patterns in open loop and with feed-forward control. |
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Simulation models for tankless gas water heatersTankless gas water heatersGas firedInstantaneous heatingDomestic hot waterModellingSimulationThere is a growing concern about to the scarceness of natural resources and the emissions problematic. Water heating is a relevant part of a household’s energy use, and tankless gas water heaters (TGWH) are widely used. There are design and engineering challenges to develop more efficient devices, with lower emissions of pollutant gases and providing comfort improvements from the user point of view. The main objective of the present work is to provide mathematical models to evaluate and support the development of different TGWH configurations. By simulation, different hardware configurations and advanced control strategies can be tested and optimized regarding energy saving, reducing of harmful environmental emissions and increase of comfort indices by reducing temperature undershoots and overshoots. The TGWH individual components are modelled, laboratory tests are performed and the heat cell is parametrized with experimental data. Configurations with and without bypass function are performed for several water flow rates and setpoint temperature patterns in open loop and with feed-forward control.Elsevier2019-12-18T15:59:22Z2020-02-05T00:00:00Z2019-02-05T00:00:00Z2019-02-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/27206eng1359-431110.1016/j.applthermaleng.2018.11.095Quintã, André F.Ferreira, Jorge A. F.Ramos, AntónioMartins, Nelson A. D.Costa, Vítor A. F.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:52:43Zoai:ria.ua.pt:10773/27206Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:00:02.728548Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Simulation models for tankless gas water heaters |
title |
Simulation models for tankless gas water heaters |
spellingShingle |
Simulation models for tankless gas water heaters Quintã, André F. Tankless gas water heaters Gas fired Instantaneous heating Domestic hot water Modelling Simulation |
title_short |
Simulation models for tankless gas water heaters |
title_full |
Simulation models for tankless gas water heaters |
title_fullStr |
Simulation models for tankless gas water heaters |
title_full_unstemmed |
Simulation models for tankless gas water heaters |
title_sort |
Simulation models for tankless gas water heaters |
author |
Quintã, André F. |
author_facet |
Quintã, André F. Ferreira, Jorge A. F. Ramos, António Martins, Nelson A. D. Costa, Vítor A. F. |
author_role |
author |
author2 |
Ferreira, Jorge A. F. Ramos, António Martins, Nelson A. D. Costa, Vítor A. F. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Quintã, André F. Ferreira, Jorge A. F. Ramos, António Martins, Nelson A. D. Costa, Vítor A. F. |
dc.subject.por.fl_str_mv |
Tankless gas water heaters Gas fired Instantaneous heating Domestic hot water Modelling Simulation |
topic |
Tankless gas water heaters Gas fired Instantaneous heating Domestic hot water Modelling Simulation |
description |
There is a growing concern about to the scarceness of natural resources and the emissions problematic. Water heating is a relevant part of a household’s energy use, and tankless gas water heaters (TGWH) are widely used. There are design and engineering challenges to develop more efficient devices, with lower emissions of pollutant gases and providing comfort improvements from the user point of view. The main objective of the present work is to provide mathematical models to evaluate and support the development of different TGWH configurations. By simulation, different hardware configurations and advanced control strategies can be tested and optimized regarding energy saving, reducing of harmful environmental emissions and increase of comfort indices by reducing temperature undershoots and overshoots. The TGWH individual components are modelled, laboratory tests are performed and the heat cell is parametrized with experimental data. Configurations with and without bypass function are performed for several water flow rates and setpoint temperature patterns in open loop and with feed-forward control. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-12-18T15:59:22Z 2019-02-05T00:00:00Z 2019-02-05 2020-02-05T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/27206 |
url |
http://hdl.handle.net/10773/27206 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1359-4311 10.1016/j.applthermaleng.2018.11.095 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799137655129112576 |