Evaluation of an Adapted Greenhouse Cooling System with Pre-Chamber and Inflatable Air Ducts for Semi-Arid Regions in Warm Conditions
The growing needs for fruit and vegetable production, together with the current climate change situation, make agriculture under plastic and greenhouse cooling indispensable. The most commonly used approaches are natural ventilation, shading and fan-pad systems. To foster a climate that allows forpl...
Main Authors: | , , , , |
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Format: | info:eu-repo/semantics/article |
Language: | English |
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MDPI
2020
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Online Access: | http://hdl.handle.net/10835/8269 |
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author | Cámara Zapata, José María Sánchez Molina, Jorge Antonio Wang, Hui Carreño Ortega, Angel Rodríguez Díaz, Francisco |
author_facet | Cámara Zapata, José María Sánchez Molina, Jorge Antonio Wang, Hui Carreño Ortega, Angel Rodríguez Díaz, Francisco |
author_sort | Cámara Zapata, José María |
collection | DSpace |
description | The growing needs for fruit and vegetable production, together with the current climate change situation, make agriculture under plastic and greenhouse cooling indispensable. The most commonly used approaches are natural ventilation, shading and fan-pad systems. To foster a climate that allows forplant production under cover in extreme conditions, a novel fan-pad system has been devised that incorporates a pre-chamber and an air distribution system using air ducts running alongside the crop rows. The system has been tested in a greenhouse in Almeria (Spain) during the daytime in August, when the weather was hotter. Tests were also carried out in combination with natural ventilation and shading. The results indicate that the fan-pad system was efficient under extreme weather conditions and that it avoided creating horizontal thermal gradients. By determining the theoretical value of the air temperature leaving the pad, we were able to estimate the evaporative cooling potential of the fan-pad system as a function of the outdoor climate. Under extreme conditions, the fan-pad system’s efficiency decreased along with increased air temperature and, above all, the increased relative humidity of the outside air. When the outdoor climate is warm and humid, natural ventilation may be the most efficient temperature control method. If the outdoor climate is warm and dry, the evaporative pad is more effective, especially when combined with shading. |
format | info:eu-repo/semantics/article |
id | oai:repositorio.ual.es:10835-8269 |
institution | Universidad de Cuenca |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | dspace |
spelling | oai:repositorio.ual.es:10835-82692023-11-08T08:19:58Z Evaluation of an Adapted Greenhouse Cooling System with Pre-Chamber and Inflatable Air Ducts for Semi-Arid Regions in Warm Conditions Cámara Zapata, José María Sánchez Molina, Jorge Antonio Wang, Hui Carreño Ortega, Angel Rodríguez Díaz, Francisco evaporative cooling natural ventilation shading resilience to climate change high temperature crop production The growing needs for fruit and vegetable production, together with the current climate change situation, make agriculture under plastic and greenhouse cooling indispensable. The most commonly used approaches are natural ventilation, shading and fan-pad systems. To foster a climate that allows forplant production under cover in extreme conditions, a novel fan-pad system has been devised that incorporates a pre-chamber and an air distribution system using air ducts running alongside the crop rows. The system has been tested in a greenhouse in Almeria (Spain) during the daytime in August, when the weather was hotter. Tests were also carried out in combination with natural ventilation and shading. The results indicate that the fan-pad system was efficient under extreme weather conditions and that it avoided creating horizontal thermal gradients. By determining the theoretical value of the air temperature leaving the pad, we were able to estimate the evaporative cooling potential of the fan-pad system as a function of the outdoor climate. Under extreme conditions, the fan-pad system’s efficiency decreased along with increased air temperature and, above all, the increased relative humidity of the outside air. When the outdoor climate is warm and humid, natural ventilation may be the most efficient temperature control method. If the outdoor climate is warm and dry, the evaporative pad is more effective, especially when combined with shading. 2020-05-27T08:51:57Z 2020-05-27T08:51:57Z 2020-05-23 info:eu-repo/semantics/article 2073-4395 http://hdl.handle.net/10835/8269 en https://www.mdpi.com/2073-4395/10/5/752 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess MDPI |
spellingShingle | evaporative cooling natural ventilation shading resilience to climate change high temperature crop production Cámara Zapata, José María Sánchez Molina, Jorge Antonio Wang, Hui Carreño Ortega, Angel Rodríguez Díaz, Francisco Evaluation of an Adapted Greenhouse Cooling System with Pre-Chamber and Inflatable Air Ducts for Semi-Arid Regions in Warm Conditions |
title | Evaluation of an Adapted Greenhouse Cooling System with Pre-Chamber and Inflatable Air Ducts for Semi-Arid Regions in Warm Conditions |
title_full | Evaluation of an Adapted Greenhouse Cooling System with Pre-Chamber and Inflatable Air Ducts for Semi-Arid Regions in Warm Conditions |
title_fullStr | Evaluation of an Adapted Greenhouse Cooling System with Pre-Chamber and Inflatable Air Ducts for Semi-Arid Regions in Warm Conditions |
title_full_unstemmed | Evaluation of an Adapted Greenhouse Cooling System with Pre-Chamber and Inflatable Air Ducts for Semi-Arid Regions in Warm Conditions |
title_short | Evaluation of an Adapted Greenhouse Cooling System with Pre-Chamber and Inflatable Air Ducts for Semi-Arid Regions in Warm Conditions |
title_sort | evaluation of an adapted greenhouse cooling system with pre-chamber and inflatable air ducts for semi-arid regions in warm conditions |
topic | evaporative cooling natural ventilation shading resilience to climate change high temperature crop production |
url | http://hdl.handle.net/10835/8269 |
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