Diagnosis and validation by computational fluid dynamics of poultry house with negative pressure ventilation
ABSTRACT Negative pressure ventilation in poultry houses has been used to enable the correction of their internal microclimates, and studies point to the heterogeneous distribution of air along the aviaries and the inadequacy of the environmental variables to the recommended ranges for thermal comfo...
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Gespeichert in:
| Autor*in: |
Gisele C. de A. Cunha [verfasserIn] José P. Lopes Neto [verfasserIn] Dermeval A. Furtado [verfasserIn] Valéria P. Borges [verfasserIn] Elias A. Freire [verfasserIn] José W. B. do Nascimento [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch ; Spanisch ; Portugiesisch |
| Schlagwörter: |
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| Übergeordnetes Werk: |
In: Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi - Universidade Federal de Campina Grande, 2004 |
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| Links: |
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| DOI / URN: |
10.1590/1807-1929/agriambi.v23n10p761-767 |
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| Katalog-ID: |
DOAJ075602954 |
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| 520 | |a ABSTRACT Negative pressure ventilation in poultry houses has been used to enable the correction of their internal microclimates, and studies point to the heterogeneous distribution of air along the aviaries and the inadequacy of the environmental variables to the recommended ranges for thermal comfort of adult birds, especially in the hottest hours of the day. This study aimed to diagnose the facilities of a poultry house in the state of Paraíba, Brazil, regarding the distribution of environmental variables and thermal comfort; develop a computational model and validate it for Computational Fluid Dynamic - CFD simulations. Air temperature (Tair), air relative humidity (RH) and air velocity (Vair) data allowed characterizing the internal environment by comparison with the recommended ranges for each variable and by the temperature-humidity-velocity index (THVI). The poultry house does not provide comfort for the housed adult birds, between 12 and 14 h, with THVI indicating alert and Tair, RH and Vair values outside the recommended ranges; the CFD model for the poultry house was validated with Tair averages collected in the field of 27.75 ± 1.35 ºC and simulated of 27.85 ± 0.55 ºC, mean values of RH collected of 83 ± 12% and simulated of 78 ± 3%, and means of Vair collected of 2.35 ± 1.35 m s-1 and simulated of 2.50 ± 1.50 m s-1. | ||
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10.1590/1807-1929/agriambi.v23n10p761-767 doi (DE-627)DOAJ075602954 (DE-599)DOAJ44e09f38fd5746b3a273846f82475ddf DE-627 ger DE-627 rakwb eng spa por S1-972 Gisele C. de A. Cunha verfasserin aut Diagnosis and validation by computational fluid dynamics of poultry house with negative pressure ventilation Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT Negative pressure ventilation in poultry houses has been used to enable the correction of their internal microclimates, and studies point to the heterogeneous distribution of air along the aviaries and the inadequacy of the environmental variables to the recommended ranges for thermal comfort of adult birds, especially in the hottest hours of the day. This study aimed to diagnose the facilities of a poultry house in the state of Paraíba, Brazil, regarding the distribution of environmental variables and thermal comfort; develop a computational model and validate it for Computational Fluid Dynamic - CFD simulations. Air temperature (Tair), air relative humidity (RH) and air velocity (Vair) data allowed characterizing the internal environment by comparison with the recommended ranges for each variable and by the temperature-humidity-velocity index (THVI). The poultry house does not provide comfort for the housed adult birds, between 12 and 14 h, with THVI indicating alert and Tair, RH and Vair values outside the recommended ranges; the CFD model for the poultry house was validated with Tair averages collected in the field of 27.75 ± 1.35 ºC and simulated of 27.85 ± 0.55 ºC, mean values of RH collected of 83 ± 12% and simulated of 78 ± 3%, and means of Vair collected of 2.35 ± 1.35 m s-1 and simulated of 2.50 ± 1.50 m s-1. thermal comfort thermal index simulations Agriculture (General) José P. Lopes Neto verfasserin aut Dermeval A. Furtado verfasserin aut Valéria P. Borges verfasserin aut Elias A. Freire verfasserin aut José W. B. do Nascimento verfasserin aut In Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi Universidade Federal de Campina Grande, 2004 (DE-627)461908247 (DE-600)2164420-2 18071929 nnns https://doi.org/10.1590/1807-1929/agriambi.v23n10p761-767 kostenfrei https://doaj.org/article/44e09f38fd5746b3a273846f82475ddf kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001000761&lng=en&tlng=en kostenfrei https://doaj.org/toc/1807-1929 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR |
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10.1590/1807-1929/agriambi.v23n10p761-767 doi (DE-627)DOAJ075602954 (DE-599)DOAJ44e09f38fd5746b3a273846f82475ddf DE-627 ger DE-627 rakwb eng spa por S1-972 Gisele C. de A. Cunha verfasserin aut Diagnosis and validation by computational fluid dynamics of poultry house with negative pressure ventilation Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT Negative pressure ventilation in poultry houses has been used to enable the correction of their internal microclimates, and studies point to the heterogeneous distribution of air along the aviaries and the inadequacy of the environmental variables to the recommended ranges for thermal comfort of adult birds, especially in the hottest hours of the day. This study aimed to diagnose the facilities of a poultry house in the state of Paraíba, Brazil, regarding the distribution of environmental variables and thermal comfort; develop a computational model and validate it for Computational Fluid Dynamic - CFD simulations. Air temperature (Tair), air relative humidity (RH) and air velocity (Vair) data allowed characterizing the internal environment by comparison with the recommended ranges for each variable and by the temperature-humidity-velocity index (THVI). The poultry house does not provide comfort for the housed adult birds, between 12 and 14 h, with THVI indicating alert and Tair, RH and Vair values outside the recommended ranges; the CFD model for the poultry house was validated with Tair averages collected in the field of 27.75 ± 1.35 ºC and simulated of 27.85 ± 0.55 ºC, mean values of RH collected of 83 ± 12% and simulated of 78 ± 3%, and means of Vair collected of 2.35 ± 1.35 m s-1 and simulated of 2.50 ± 1.50 m s-1. thermal comfort thermal index simulations Agriculture (General) José P. Lopes Neto verfasserin aut Dermeval A. Furtado verfasserin aut Valéria P. Borges verfasserin aut Elias A. Freire verfasserin aut José W. B. do Nascimento verfasserin aut In Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi Universidade Federal de Campina Grande, 2004 (DE-627)461908247 (DE-600)2164420-2 18071929 nnns https://doi.org/10.1590/1807-1929/agriambi.v23n10p761-767 kostenfrei https://doaj.org/article/44e09f38fd5746b3a273846f82475ddf kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001000761&lng=en&tlng=en kostenfrei https://doaj.org/toc/1807-1929 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR |
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10.1590/1807-1929/agriambi.v23n10p761-767 doi (DE-627)DOAJ075602954 (DE-599)DOAJ44e09f38fd5746b3a273846f82475ddf DE-627 ger DE-627 rakwb eng spa por S1-972 Gisele C. de A. Cunha verfasserin aut Diagnosis and validation by computational fluid dynamics of poultry house with negative pressure ventilation Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT Negative pressure ventilation in poultry houses has been used to enable the correction of their internal microclimates, and studies point to the heterogeneous distribution of air along the aviaries and the inadequacy of the environmental variables to the recommended ranges for thermal comfort of adult birds, especially in the hottest hours of the day. This study aimed to diagnose the facilities of a poultry house in the state of Paraíba, Brazil, regarding the distribution of environmental variables and thermal comfort; develop a computational model and validate it for Computational Fluid Dynamic - CFD simulations. Air temperature (Tair), air relative humidity (RH) and air velocity (Vair) data allowed characterizing the internal environment by comparison with the recommended ranges for each variable and by the temperature-humidity-velocity index (THVI). The poultry house does not provide comfort for the housed adult birds, between 12 and 14 h, with THVI indicating alert and Tair, RH and Vair values outside the recommended ranges; the CFD model for the poultry house was validated with Tair averages collected in the field of 27.75 ± 1.35 ºC and simulated of 27.85 ± 0.55 ºC, mean values of RH collected of 83 ± 12% and simulated of 78 ± 3%, and means of Vair collected of 2.35 ± 1.35 m s-1 and simulated of 2.50 ± 1.50 m s-1. thermal comfort thermal index simulations Agriculture (General) José P. Lopes Neto verfasserin aut Dermeval A. Furtado verfasserin aut Valéria P. Borges verfasserin aut Elias A. Freire verfasserin aut José W. B. do Nascimento verfasserin aut In Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi Universidade Federal de Campina Grande, 2004 (DE-627)461908247 (DE-600)2164420-2 18071929 nnns https://doi.org/10.1590/1807-1929/agriambi.v23n10p761-767 kostenfrei https://doaj.org/article/44e09f38fd5746b3a273846f82475ddf kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001000761&lng=en&tlng=en kostenfrei https://doaj.org/toc/1807-1929 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR |
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10.1590/1807-1929/agriambi.v23n10p761-767 doi (DE-627)DOAJ075602954 (DE-599)DOAJ44e09f38fd5746b3a273846f82475ddf DE-627 ger DE-627 rakwb eng spa por S1-972 Gisele C. de A. Cunha verfasserin aut Diagnosis and validation by computational fluid dynamics of poultry house with negative pressure ventilation Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT Negative pressure ventilation in poultry houses has been used to enable the correction of their internal microclimates, and studies point to the heterogeneous distribution of air along the aviaries and the inadequacy of the environmental variables to the recommended ranges for thermal comfort of adult birds, especially in the hottest hours of the day. This study aimed to diagnose the facilities of a poultry house in the state of Paraíba, Brazil, regarding the distribution of environmental variables and thermal comfort; develop a computational model and validate it for Computational Fluid Dynamic - CFD simulations. Air temperature (Tair), air relative humidity (RH) and air velocity (Vair) data allowed characterizing the internal environment by comparison with the recommended ranges for each variable and by the temperature-humidity-velocity index (THVI). The poultry house does not provide comfort for the housed adult birds, between 12 and 14 h, with THVI indicating alert and Tair, RH and Vair values outside the recommended ranges; the CFD model for the poultry house was validated with Tair averages collected in the field of 27.75 ± 1.35 ºC and simulated of 27.85 ± 0.55 ºC, mean values of RH collected of 83 ± 12% and simulated of 78 ± 3%, and means of Vair collected of 2.35 ± 1.35 m s-1 and simulated of 2.50 ± 1.50 m s-1. thermal comfort thermal index simulations Agriculture (General) José P. Lopes Neto verfasserin aut Dermeval A. Furtado verfasserin aut Valéria P. Borges verfasserin aut Elias A. Freire verfasserin aut José W. B. do Nascimento verfasserin aut In Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi Universidade Federal de Campina Grande, 2004 (DE-627)461908247 (DE-600)2164420-2 18071929 nnns https://doi.org/10.1590/1807-1929/agriambi.v23n10p761-767 kostenfrei https://doaj.org/article/44e09f38fd5746b3a273846f82475ddf kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001000761&lng=en&tlng=en kostenfrei https://doaj.org/toc/1807-1929 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR |
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Diagnosis and validation by computational fluid dynamics of poultry house with negative pressure ventilation |
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Diagnosis and validation by computational fluid dynamics of poultry house with negative pressure ventilation |
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Gisele C. de A. Cunha |
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Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi |
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Gisele C. de A. Cunha José P. Lopes Neto Dermeval A. Furtado Valéria P. Borges Elias A. Freire José W. B. do Nascimento |
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10.1590/1807-1929/agriambi.v23n10p761-767 |
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diagnosis and validation by computational fluid dynamics of poultry house with negative pressure ventilation |
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Diagnosis and validation by computational fluid dynamics of poultry house with negative pressure ventilation |
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ABSTRACT Negative pressure ventilation in poultry houses has been used to enable the correction of their internal microclimates, and studies point to the heterogeneous distribution of air along the aviaries and the inadequacy of the environmental variables to the recommended ranges for thermal comfort of adult birds, especially in the hottest hours of the day. This study aimed to diagnose the facilities of a poultry house in the state of Paraíba, Brazil, regarding the distribution of environmental variables and thermal comfort; develop a computational model and validate it for Computational Fluid Dynamic - CFD simulations. Air temperature (Tair), air relative humidity (RH) and air velocity (Vair) data allowed characterizing the internal environment by comparison with the recommended ranges for each variable and by the temperature-humidity-velocity index (THVI). The poultry house does not provide comfort for the housed adult birds, between 12 and 14 h, with THVI indicating alert and Tair, RH and Vair values outside the recommended ranges; the CFD model for the poultry house was validated with Tair averages collected in the field of 27.75 ± 1.35 ºC and simulated of 27.85 ± 0.55 ºC, mean values of RH collected of 83 ± 12% and simulated of 78 ± 3%, and means of Vair collected of 2.35 ± 1.35 m s-1 and simulated of 2.50 ± 1.50 m s-1. |
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ABSTRACT Negative pressure ventilation in poultry houses has been used to enable the correction of their internal microclimates, and studies point to the heterogeneous distribution of air along the aviaries and the inadequacy of the environmental variables to the recommended ranges for thermal comfort of adult birds, especially in the hottest hours of the day. This study aimed to diagnose the facilities of a poultry house in the state of Paraíba, Brazil, regarding the distribution of environmental variables and thermal comfort; develop a computational model and validate it for Computational Fluid Dynamic - CFD simulations. Air temperature (Tair), air relative humidity (RH) and air velocity (Vair) data allowed characterizing the internal environment by comparison with the recommended ranges for each variable and by the temperature-humidity-velocity index (THVI). The poultry house does not provide comfort for the housed adult birds, between 12 and 14 h, with THVI indicating alert and Tair, RH and Vair values outside the recommended ranges; the CFD model for the poultry house was validated with Tair averages collected in the field of 27.75 ± 1.35 ºC and simulated of 27.85 ± 0.55 ºC, mean values of RH collected of 83 ± 12% and simulated of 78 ± 3%, and means of Vair collected of 2.35 ± 1.35 m s-1 and simulated of 2.50 ± 1.50 m s-1. |
| abstract_unstemmed |
ABSTRACT Negative pressure ventilation in poultry houses has been used to enable the correction of their internal microclimates, and studies point to the heterogeneous distribution of air along the aviaries and the inadequacy of the environmental variables to the recommended ranges for thermal comfort of adult birds, especially in the hottest hours of the day. This study aimed to diagnose the facilities of a poultry house in the state of Paraíba, Brazil, regarding the distribution of environmental variables and thermal comfort; develop a computational model and validate it for Computational Fluid Dynamic - CFD simulations. Air temperature (Tair), air relative humidity (RH) and air velocity (Vair) data allowed characterizing the internal environment by comparison with the recommended ranges for each variable and by the temperature-humidity-velocity index (THVI). The poultry house does not provide comfort for the housed adult birds, between 12 and 14 h, with THVI indicating alert and Tair, RH and Vair values outside the recommended ranges; the CFD model for the poultry house was validated with Tair averages collected in the field of 27.75 ± 1.35 ºC and simulated of 27.85 ± 0.55 ºC, mean values of RH collected of 83 ± 12% and simulated of 78 ± 3%, and means of Vair collected of 2.35 ± 1.35 m s-1 and simulated of 2.50 ± 1.50 m s-1. |
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Diagnosis and validation by computational fluid dynamics of poultry house with negative pressure ventilation |
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