Please use this identifier to cite or link to this item:
https://hdl.handle.net/11000/33489
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 |
Authors: Cámara-Zapata, José-María Sanchez-Molina, Jorge Antonio Wang, Hui Carreño Ortega, Angel Rodríguez-Díaz, Francisco |
Editor: MDPI |
Department: Departamentos de la UMH::Física Aplicada |
Issue Date: 2020-05 |
URI: https://hdl.handle.net/11000/33489 |
Abstract:
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.
|
Keywords/Subjects: Evaporative cooling Natural ventilation Shading Resilience to climate change High temperature crop production |
Type of document: application/pdf |
Access rights: info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional |
DOI: https://doi.org/10.3390/agronomy10050752 |
Appears in Collections: Artículos Física Aplicada
|
???jsp.display-item.text9???