Simulation models for tankless gas water heaters

Detalhes bibliográficos
Autor(a) principal: Quintã, André F.
Data de Publicação: 2019
Outros Autores: Ferreira, Jorge A. F., Ramos, António, Martins, Nelson A. D., Costa, Vítor A. F.
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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spelling 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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