Assessment of evaporative cooling efficiency in greenhouses equiped with wetted porous plates
The main objective of this study was to experimentally validate a mechanistic model for predicting the cooling efficiency (η) of wetted porous plates built with expanded clay. The expanded clay material was physically characterized by specific mass, surface area, and volume. The model was validated...
- Autores:
-
Alves-Damasceno, Flavio
Barreto-Mendes, Luciano
Yanagi Junior, Tadayuki
Luiz de Oliveira, Jofran
Osorio-Saraz, Jairo Alexander
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2017
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/60854
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/60854
http://bdigital.unal.edu.co/59236/
- Palabra clave:
- 62 Ingeniería y operaciones afines / Engineering
Greenhouse
mathematical modeling
simulation
heat and mass transfer
Invernadero
modelo matemático
simulación
transferencia de calor y masa
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
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UNACIONAL2 |
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Universidad Nacional de Colombia |
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| dc.title.spa.fl_str_mv |
Assessment of evaporative cooling efficiency in greenhouses equiped with wetted porous plates |
| title |
Assessment of evaporative cooling efficiency in greenhouses equiped with wetted porous plates |
| spellingShingle |
Assessment of evaporative cooling efficiency in greenhouses equiped with wetted porous plates 62 Ingeniería y operaciones afines / Engineering Greenhouse mathematical modeling simulation heat and mass transfer Invernadero modelo matemático simulación transferencia de calor y masa |
| title_short |
Assessment of evaporative cooling efficiency in greenhouses equiped with wetted porous plates |
| title_full |
Assessment of evaporative cooling efficiency in greenhouses equiped with wetted porous plates |
| title_fullStr |
Assessment of evaporative cooling efficiency in greenhouses equiped with wetted porous plates |
| title_full_unstemmed |
Assessment of evaporative cooling efficiency in greenhouses equiped with wetted porous plates |
| title_sort |
Assessment of evaporative cooling efficiency in greenhouses equiped with wetted porous plates |
| dc.creator.fl_str_mv |
Alves-Damasceno, Flavio Barreto-Mendes, Luciano Yanagi Junior, Tadayuki Luiz de Oliveira, Jofran Osorio-Saraz, Jairo Alexander |
| dc.contributor.author.spa.fl_str_mv |
Alves-Damasceno, Flavio Barreto-Mendes, Luciano Yanagi Junior, Tadayuki Luiz de Oliveira, Jofran Osorio-Saraz, Jairo Alexander |
| dc.subject.ddc.spa.fl_str_mv |
62 Ingeniería y operaciones afines / Engineering |
| topic |
62 Ingeniería y operaciones afines / Engineering Greenhouse mathematical modeling simulation heat and mass transfer Invernadero modelo matemático simulación transferencia de calor y masa |
| dc.subject.proposal.spa.fl_str_mv |
Greenhouse mathematical modeling simulation heat and mass transfer Invernadero modelo matemático simulación transferencia de calor y masa |
| description |
The main objective of this study was to experimentally validate a mechanistic model for predicting the cooling efficiency (η) of wetted porous plates built with expanded clay. The expanded clay material was physically characterized by specific mass, surface area, and volume. The model was validated with dry bulb temperature (Tdb, °C) and air relative humidity (RH, %) data, which were continuously monitored in two different points, upstream and downstream the direction of the air passing through the porous plate. Data collection was carried out consecutively for a period of 10 days, between 11:00 a.m. and 4:00 p.m. Average values for η, simulated and observed, were 74.8 ± 7.4% and 68.3 ± 8.3%, respectively. Based on the developed model, it was observed that η was higher than 40% for Tdb 30 °C and constant RH at 45%. The simulation for predictions indicates that the increase in the air temperature greater than 20 °C may affect negatively the production in greenhouses from states located in tropical and subtropical countries as Minas Gerais, Brazil, if some design criteria in the evaporative cooling system are not revised. |
| publishDate |
2017 |
| dc.date.issued.spa.fl_str_mv |
2017-10-01 |
| dc.date.accessioned.spa.fl_str_mv |
2019-07-02T19:17:05Z |
| dc.date.available.spa.fl_str_mv |
2019-07-02T19:17:05Z |
| dc.type.spa.fl_str_mv |
Artículo de revista |
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http://purl.org/coar/resource_type/c_2df8fbb1 |
| dc.type.driver.spa.fl_str_mv |
info:eu-repo/semantics/article |
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info:eu-repo/semantics/publishedVersion |
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http://purl.org/coar/resource_type/c_6501 |
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http://purl.org/coar/version/c_970fb48d4fbd8a85 |
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Text |
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http://purl.org/redcol/resource_type/ART |
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http://purl.org/coar/resource_type/c_6501 |
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publishedVersion |
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ISSN: 2346-2183 |
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https://repositorio.unal.edu.co/handle/unal/60854 |
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http://bdigital.unal.edu.co/59236/ |
| identifier_str_mv |
ISSN: 2346-2183 |
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https://repositorio.unal.edu.co/handle/unal/60854 http://bdigital.unal.edu.co/59236/ |
| dc.language.iso.spa.fl_str_mv |
spa |
| language |
spa |
| dc.relation.spa.fl_str_mv |
https://revistas.unal.edu.co/index.php/dyna/article/view/59564 |
| dc.relation.ispartof.spa.fl_str_mv |
Universidad Nacional de Colombia Revistas electrónicas UN Dyna Dyna |
| dc.relation.references.spa.fl_str_mv |
Alves-Damasceno, Flavio and Barreto-Mendes, Luciano and Yanagi Junior, Tadayuki and Luiz de Oliveira, Jofran and Osorio-Saraz, Jairo Alexander (2017) Assessment of evaporative cooling efficiency in greenhouses equiped with wetted porous plates. DYNA, 84 (203). pp. 118-125. ISSN 2346-2183 |
| dc.rights.spa.fl_str_mv |
Derechos reservados - Universidad Nacional de Colombia |
| dc.rights.coar.fl_str_mv |
http://purl.org/coar/access_right/c_abf2 |
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Atribución-NoComercial 4.0 Internacional |
| dc.rights.uri.spa.fl_str_mv |
http://creativecommons.org/licenses/by-nc/4.0/ |
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info:eu-repo/semantics/openAccess |
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Atribución-NoComercial 4.0 Internacional Derechos reservados - Universidad Nacional de Colombia http://creativecommons.org/licenses/by-nc/4.0/ http://purl.org/coar/access_right/c_abf2 |
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openAccess |
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application/pdf |
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Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas. |
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Universidad Nacional de Colombia |
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https://repositorio.unal.edu.co/bitstream/unal/60854/1/59564-357506-1-PB.pdf https://repositorio.unal.edu.co/bitstream/unal/60854/2/59564-357506-1-PB.pdf.jpg |
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repositorio_nal@unal.edu.co |
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1806886537416146944 |
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Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Alves-Damasceno, Flavio924d6025-f052-4a93-81ad-3da28ae0b45f300Barreto-Mendes, Luciano73517e43-5146-4888-bf67-c7fc0c66d4e1300Yanagi Junior, Tadayuki42c10939-f691-43be-9850-b61ecd96b637300Luiz de Oliveira, Jofran20f8e313-2cb4-42fd-939e-6d6dff4de054300Osorio-Saraz, Jairo Alexander9490deee-5085-4e8d-b0e9-d4e3ec4dfa6c3002019-07-02T19:17:05Z2019-07-02T19:17:05Z2017-10-01ISSN: 2346-2183https://repositorio.unal.edu.co/handle/unal/60854http://bdigital.unal.edu.co/59236/The main objective of this study was to experimentally validate a mechanistic model for predicting the cooling efficiency (η) of wetted porous plates built with expanded clay. The expanded clay material was physically characterized by specific mass, surface area, and volume. The model was validated with dry bulb temperature (Tdb, °C) and air relative humidity (RH, %) data, which were continuously monitored in two different points, upstream and downstream the direction of the air passing through the porous plate. Data collection was carried out consecutively for a period of 10 days, between 11:00 a.m. and 4:00 p.m. Average values for η, simulated and observed, were 74.8 ± 7.4% and 68.3 ± 8.3%, respectively. Based on the developed model, it was observed that η was higher than 40% for Tdb 30 °C and constant RH at 45%. The simulation for predictions indicates that the increase in the air temperature greater than 20 °C may affect negatively the production in greenhouses from states located in tropical and subtropical countries as Minas Gerais, Brazil, if some design criteria in the evaporative cooling system are not revised.El objetivo principal de este estudio fue validar experimentalmente un modelo mecánistico para predecir la eficacia de enfriamiento (η) de placas porosas construidas con arcilla expandida. El material de arcilla expandida fue físicamente caracterizado encontrando su masa específica, área superficial y volumen. El modelo fue validado con datos de temperatura de bulbo seco (Tdb, ° C) y humedad relativa del aire (humedad relativa,%) que fueron continuamente monitoreados en dos puntos diferentes, en contra y a favor de la dirección del aire que pasa a través de la placa porosa. La recolección de datos se llevó a cabo de forma consecutiva durante un período de 10 días entre las 11:00 y 4:00 p.m. Los valores medios de η, simulados y observados, fueron 74,8 ± 7,4% y 68,3 ± 8,3%, respectivamente. Basado en el modelo desarrollado, se observó que η fue mayor del 40% para Tdb and gt; 30 ° C y HR constante en 45%. La simulación indicó que el aumento de la temperatura del aire puede afectar negativamente la producción en invernaderos en Estados como Minas Gerais, Brazil, si no se revisan algunos criterios de diseño en el sistema de enfriamiento por evaporación.application/pdfspaUniversidad Nacional de Colombia (Sede Medellín). Facultad de Minas.https://revistas.unal.edu.co/index.php/dyna/article/view/59564Universidad Nacional de Colombia Revistas electrónicas UN DynaDynaAlves-Damasceno, Flavio and Barreto-Mendes, Luciano and Yanagi Junior, Tadayuki and Luiz de Oliveira, Jofran and Osorio-Saraz, Jairo Alexander (2017) Assessment of evaporative cooling efficiency in greenhouses equiped with wetted porous plates. DYNA, 84 (203). pp. 118-125. ISSN 2346-218362 Ingeniería y operaciones afines / EngineeringGreenhousemathematical modelingsimulationheat and mass transferInvernaderomodelo matemáticosimulacióntransferencia de calor y masaAssessment of evaporative cooling efficiency in greenhouses equiped with wetted porous platesArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTORIGINAL59564-357506-1-PB.pdfapplication/pdf732834https://repositorio.unal.edu.co/bitstream/unal/60854/1/59564-357506-1-PB.pdf30b118770678ea1147d82786afd52b12MD51THUMBNAIL59564-357506-1-PB.pdf.jpg59564-357506-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg9698https://repositorio.unal.edu.co/bitstream/unal/60854/2/59564-357506-1-PB.pdf.jpg8b98c3752eba19a249c3296733d1e41aMD52unal/60854oai:repositorio.unal.edu.co:unal/608542024-04-15 23:09:04.207Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co |