Desenvolvimento de um sistema de climatização híbrido: dessecante e por compressão de vapor
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFPB |
Texto Completo: | https://repositorio.ufpb.br/jspui/handle/123456789/18968 |
Resumo: | In the present work, a hybrid artificial air conditioning system was developed on the basis of the technologies of desiccant air conditioning and air conditioning by steam compression (CCV). Its structure was divided into two stages, the first to reduce the latent loads of the air conditioning by means of the dehumidification process in adsorption wheels, and the second to reduce the sensitive loads of the air conditioning by means of heat transfer in a rotary heat exchanger and a compact heat exchanger. The adsorption wheels used were a desiccant wheel (RD) and an enthalpy wheel (RE), the rotary heat exchanger was a regenerative heat exchanger type (sensible wheel), and the compact heat exchanger was the evaporator constituting a residential CCV window system. The enthalpy wheel was inserted into the system to act in conjunction with the desiccant wheel and was presented as an excellent means to achieve higher levels of dehumidification and also reductions in the consumption of the heat source used to reactivate the adsorbent of the desiccant wheel. As a way of further reducing the consumption of the heat source, the thermal residues dissipated from the constituent condenser of the CCV system were used. The hybrid system in open ventilation mode was evaluated from two test blocks, the first one using airflows of 909 m³/h, and the second using flow rates of 1204 m³/h. The performances, Thermal (), Electrical () and General () were observed. Reactivation temperatures maintained at around 50, 65 and 80℃ were used in each test block. In the test block with flow rates of 909 m³ / h, the maximum performance coefficients were βT_52.0°C= 2.2, βE_80.5°C= 3.4, βG_52.0°C= 0.9. In the test block with flow rates of 1204 m³/h, the maximum performance coefficients were βT_49.8°C= 2.5, βE_80.1°C= 4.2, βG_49.8°C= 1.1. From the case studies, the RD performance was compared with the performance of the set, RD + RE. It was observed in the flows of 909 and 1204 m³/h, that by means of the joint action of the rotors, reductions of the consumption of the heat source of 57.6% and 61.8%, respectively, were obtained. In each test block it was also observed that, in the lower reactivation temperature, the joint performance of the rotors promoted dehumidification levels equivalent to those achieved by the RD reactivated with the higher established temperature. Due to the use of the thermal residues dissipated in the condenser, in the test block with flow rates of 909 m³/h and reactivation temperatures of 52.0℃, 65.9℃ and 80.5℃, the heat source consumption was saved in 100% 71.9% and 51.1%, respectively. Similarly, in the test block with flow rates of 1204 m³/h and with reactivation temperatures of 49.8℃, 66.0℃ and 80.1℃, the consumption of the heat source was saved in 100%, 71.8% and 52.5%, respectively. |
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Desenvolvimento de um sistema de climatização híbrido: dessecante e por compressão de vaporClimatização híbridaRotor dessecanteRotor entálpicoRotor regenerativoCompressão de vaporHybrid air conditioningDesiccant wheelEnthalpy wheelRegenerative wheelVapor compressionCNPQ::ENGENHARIAS::ENGENHARIA MECANICAIn the present work, a hybrid artificial air conditioning system was developed on the basis of the technologies of desiccant air conditioning and air conditioning by steam compression (CCV). Its structure was divided into two stages, the first to reduce the latent loads of the air conditioning by means of the dehumidification process in adsorption wheels, and the second to reduce the sensitive loads of the air conditioning by means of heat transfer in a rotary heat exchanger and a compact heat exchanger. The adsorption wheels used were a desiccant wheel (RD) and an enthalpy wheel (RE), the rotary heat exchanger was a regenerative heat exchanger type (sensible wheel), and the compact heat exchanger was the evaporator constituting a residential CCV window system. The enthalpy wheel was inserted into the system to act in conjunction with the desiccant wheel and was presented as an excellent means to achieve higher levels of dehumidification and also reductions in the consumption of the heat source used to reactivate the adsorbent of the desiccant wheel. As a way of further reducing the consumption of the heat source, the thermal residues dissipated from the constituent condenser of the CCV system were used. The hybrid system in open ventilation mode was evaluated from two test blocks, the first one using airflows of 909 m³/h, and the second using flow rates of 1204 m³/h. The performances, Thermal (), Electrical () and General () were observed. Reactivation temperatures maintained at around 50, 65 and 80℃ were used in each test block. In the test block with flow rates of 909 m³ / h, the maximum performance coefficients were βT_52.0°C= 2.2, βE_80.5°C= 3.4, βG_52.0°C= 0.9. In the test block with flow rates of 1204 m³/h, the maximum performance coefficients were βT_49.8°C= 2.5, βE_80.1°C= 4.2, βG_49.8°C= 1.1. From the case studies, the RD performance was compared with the performance of the set, RD + RE. It was observed in the flows of 909 and 1204 m³/h, that by means of the joint action of the rotors, reductions of the consumption of the heat source of 57.6% and 61.8%, respectively, were obtained. In each test block it was also observed that, in the lower reactivation temperature, the joint performance of the rotors promoted dehumidification levels equivalent to those achieved by the RD reactivated with the higher established temperature. Due to the use of the thermal residues dissipated in the condenser, in the test block with flow rates of 909 m³/h and reactivation temperatures of 52.0℃, 65.9℃ and 80.5℃, the heat source consumption was saved in 100% 71.9% and 51.1%, respectively. Similarly, in the test block with flow rates of 1204 m³/h and with reactivation temperatures of 49.8℃, 66.0℃ and 80.1℃, the consumption of the heat source was saved in 100%, 71.8% and 52.5%, respectively.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESNo presente trabalho foi desenvolvido em caráter experimental um sistema de climatização artificial híbrido a partir das tecnologias de climatização dessecante e de climatização por compressão de vapor (CCV). Sua estrutura foi dividida em dois estágios, o primeiro para reduzir as cargas latentes do ar de climatização a partir do processo de desumidificação em rotores adsortivos, e o segundo para reduzir as cargas sensíveis do ar de climatização a partir da transferência de calor em um trocador de calor rotativo e em um trocador de calor compacto. Os rotores adsortivos usados foram, um rotor dessecante (RD) e um rotor entálpico (RE), o trocador de calor rotativo foi um trocador de calor regenerativo (rotor sensível), e o trocador de calor compacto foi o evaporador constituinte de um sistema CCV residencial de janela. O rotor entálpico foi inserido no sistema para atuar em conjunto com o rotor dessecante e apresentou-se como um excelente meio para alcançar maiores níveis de desumidificação e também reduções no consumo da fonte de calor usada para reativar o adsorvente do rotor dessecante. Como forma de reduzir ainda mais o consumo da fonte de calor, foram aproveitados os resíduos térmicos dissipados a partir do condensador constituinte do sistema CCV. O sistema híbrido em modo de ventilação aberto foi avaliado a partir de dois blocos de testes, o primeiro usando vazões de ar de 909 m³/h, e o segundo usando vazões de 1204 m³/h. Foram observados os desempenhos, Térmico (), Elétrico () e Geral (). Em cada bloco de testes foram usadas temperaturas de reativação mantidas em torno de 50, 65 e 80℃. No bloco de testes com vazões de 909 m³/h, os coeficientes de desempenho máximos foram, βT_ 52.0°C= 2.2, βE_80.5°C= 3.4, βG_52.0°C= 0.9. No bloco de testes com vazões de 1204 m³/h, os coeficientes de desempenho máximos foram, βT_49.8°C= 2.5, βE_80.1°C= 4.2, βG_49.8°C= 1.1. A partir de estudos de casos foram comparadas a atuação do RD com a atuação do conjunto RD+RE. Observou-se nas vazões de 909 e 1204 m³/h, que por meio da atuação conjunta dos rotores, foram obtidas reduções do consumo da fonte de calor de 57.6% e 61.8%, respectivamente. Em cada bloco de testes foi observado também que, na menor temperatura de reativação a atuação conjunta dos rotores promoveu níveis de desumidificação equivalentes àqueles alcançados pelo RD reativado com a maior temperatura estabelecida. Devido ao aproveitamento dos resíduos térmicos dissipados no condensador, no bloco de testes com vazões de 909 m³/h e temperaturas de reativação de 52.0°C, 65.9°C e 80.5°C, o consumo da fonte de calor foi poupado em, 100%, 71.9% e 51.1%, respectivamente. De forma análoga, no bloco de testes com vazões de 1204 m³/h e com temperaturas de reativação de 49.8°C, 66.0°C e 80.1°C, o consumo da fonte de calor foi poupado em, 100%, 71.8% e 52.5%, respectivamente.Universidade Federal da ParaíbaBrasilEngenharia MecânicaPrograma de Pós-Graduação em Engenharia MecânicaUFPBGurgel, José Maurício Alves de Matoshttp://lattes.cnpq.br/8118978612486649Melo, Francisco José Araujo2020-12-28T06:03:27Z2019-04-012020-12-28T06:03:27Z2019-02-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesishttps://repositorio.ufpb.br/jspui/handle/123456789/18968porAttribution-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nd/3.0/br/info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFPBinstname:Universidade Federal da Paraíba (UFPB)instacron:UFPB2021-08-25T00:03:56Zoai:repositorio.ufpb.br:123456789/18968Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufpb.br/PUBhttp://tede.biblioteca.ufpb.br:8080/oai/requestdiretoria@ufpb.br|| diretoria@ufpb.bropendoar:2021-08-25T00:03:56Biblioteca Digital de Teses e Dissertações da UFPB - Universidade Federal da Paraíba (UFPB)false |
dc.title.none.fl_str_mv |
Desenvolvimento de um sistema de climatização híbrido: dessecante e por compressão de vapor |
title |
Desenvolvimento de um sistema de climatização híbrido: dessecante e por compressão de vapor |
spellingShingle |
Desenvolvimento de um sistema de climatização híbrido: dessecante e por compressão de vapor Melo, Francisco José Araujo Climatização híbrida Rotor dessecante Rotor entálpico Rotor regenerativo Compressão de vapor Hybrid air conditioning Desiccant wheel Enthalpy wheel Regenerative wheel Vapor compression CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
title_short |
Desenvolvimento de um sistema de climatização híbrido: dessecante e por compressão de vapor |
title_full |
Desenvolvimento de um sistema de climatização híbrido: dessecante e por compressão de vapor |
title_fullStr |
Desenvolvimento de um sistema de climatização híbrido: dessecante e por compressão de vapor |
title_full_unstemmed |
Desenvolvimento de um sistema de climatização híbrido: dessecante e por compressão de vapor |
title_sort |
Desenvolvimento de um sistema de climatização híbrido: dessecante e por compressão de vapor |
author |
Melo, Francisco José Araujo |
author_facet |
Melo, Francisco José Araujo |
author_role |
author |
dc.contributor.none.fl_str_mv |
Gurgel, José Maurício Alves de Matos http://lattes.cnpq.br/8118978612486649 |
dc.contributor.author.fl_str_mv |
Melo, Francisco José Araujo |
dc.subject.por.fl_str_mv |
Climatização híbrida Rotor dessecante Rotor entálpico Rotor regenerativo Compressão de vapor Hybrid air conditioning Desiccant wheel Enthalpy wheel Regenerative wheel Vapor compression CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
topic |
Climatização híbrida Rotor dessecante Rotor entálpico Rotor regenerativo Compressão de vapor Hybrid air conditioning Desiccant wheel Enthalpy wheel Regenerative wheel Vapor compression CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
description |
In the present work, a hybrid artificial air conditioning system was developed on the basis of the technologies of desiccant air conditioning and air conditioning by steam compression (CCV). Its structure was divided into two stages, the first to reduce the latent loads of the air conditioning by means of the dehumidification process in adsorption wheels, and the second to reduce the sensitive loads of the air conditioning by means of heat transfer in a rotary heat exchanger and a compact heat exchanger. The adsorption wheels used were a desiccant wheel (RD) and an enthalpy wheel (RE), the rotary heat exchanger was a regenerative heat exchanger type (sensible wheel), and the compact heat exchanger was the evaporator constituting a residential CCV window system. The enthalpy wheel was inserted into the system to act in conjunction with the desiccant wheel and was presented as an excellent means to achieve higher levels of dehumidification and also reductions in the consumption of the heat source used to reactivate the adsorbent of the desiccant wheel. As a way of further reducing the consumption of the heat source, the thermal residues dissipated from the constituent condenser of the CCV system were used. The hybrid system in open ventilation mode was evaluated from two test blocks, the first one using airflows of 909 m³/h, and the second using flow rates of 1204 m³/h. The performances, Thermal (), Electrical () and General () were observed. Reactivation temperatures maintained at around 50, 65 and 80℃ were used in each test block. In the test block with flow rates of 909 m³ / h, the maximum performance coefficients were βT_52.0°C= 2.2, βE_80.5°C= 3.4, βG_52.0°C= 0.9. In the test block with flow rates of 1204 m³/h, the maximum performance coefficients were βT_49.8°C= 2.5, βE_80.1°C= 4.2, βG_49.8°C= 1.1. From the case studies, the RD performance was compared with the performance of the set, RD + RE. It was observed in the flows of 909 and 1204 m³/h, that by means of the joint action of the rotors, reductions of the consumption of the heat source of 57.6% and 61.8%, respectively, were obtained. In each test block it was also observed that, in the lower reactivation temperature, the joint performance of the rotors promoted dehumidification levels equivalent to those achieved by the RD reactivated with the higher established temperature. Due to the use of the thermal residues dissipated in the condenser, in the test block with flow rates of 909 m³/h and reactivation temperatures of 52.0℃, 65.9℃ and 80.5℃, the heat source consumption was saved in 100% 71.9% and 51.1%, respectively. Similarly, in the test block with flow rates of 1204 m³/h and with reactivation temperatures of 49.8℃, 66.0℃ and 80.1℃, the consumption of the heat source was saved in 100%, 71.8% and 52.5%, respectively. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-04-01 2019-02-28 2020-12-28T06:03:27Z 2020-12-28T06:03:27Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufpb.br/jspui/handle/123456789/18968 |
url |
https://repositorio.ufpb.br/jspui/handle/123456789/18968 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
Attribution-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nd/3.0/br/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nd/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal da Paraíba Brasil Engenharia Mecânica Programa de Pós-Graduação em Engenharia Mecânica UFPB |
publisher.none.fl_str_mv |
Universidade Federal da Paraíba Brasil Engenharia Mecânica Programa de Pós-Graduação em Engenharia Mecânica UFPB |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações da UFPB instname:Universidade Federal da Paraíba (UFPB) instacron:UFPB |
instname_str |
Universidade Federal da Paraíba (UFPB) |
instacron_str |
UFPB |
institution |
UFPB |
reponame_str |
Biblioteca Digital de Teses e Dissertações da UFPB |
collection |
Biblioteca Digital de Teses e Dissertações da UFPB |
repository.name.fl_str_mv |
Biblioteca Digital de Teses e Dissertações da UFPB - Universidade Federal da Paraíba (UFPB) |
repository.mail.fl_str_mv |
diretoria@ufpb.br|| diretoria@ufpb.br |
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1801843022130839552 |