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Provedor de dados:  CIGR Journal
País:  China
Título:  Thermal modelling and performance assessment of a circular greenhouse with solar chimney assisted ventilation and fog Cooling
Autores:  Misra, Debajit
Ghosh, Sudip
Data:  2019-01-25
Ano:  2019
Palavras-chave:  Mechanical Engineering
Thermal Engineering
Agricultural Engineering greenhouse solar chimney ventilation evaporative cooling fogging cycle
Resumo:  This paper presents a conceptualized model of a solar chimney-assisted naturally ventilated circular greenhouse applicable for hot and arid regions. Instead of conventional rectangular shape, a circular shape is chosen which makes the greenhouse independent of wind direction and orientation with regards to the wind-induced ventilation. Pressurised fogging system is considered as the mode of distributed evaporative cooling. A circular twin-wall solar chimney is centrally mounted which is suitably sized to provide buoyancy-induced natural ventilation. The solar induced ventilation is sufficient, giving 0.6-0.75 air change per minute (ACM). The analysis revealed that during the peak ambient temperatures, the greenhouse inside temperature could be lowered by 4 to 6 0C below the ambient employing an optimized fogging cycle with spray time/interval period of 1.5 min/2 min. 
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.cigrjournal.org/index.php/Ejounral/article/view/4741
Editor:  International Commission of Agricultural and Biosystems Engineering
Relação:  http://www.cigrjournal.org/index.php/Ejounral/article/view/4741/2886
http://www.cigrjournal.org/index.php/Ejounral/article/downloadSuppFile/4741/2068
http://www.cigrjournal.org/index.php/Ejounral/article/downloadSuppFile/4741/2069
Formato:  application/pdf
Fonte:  Agricultural Engineering International: CIGR Journal; Vol 20, No 4 (2018): CIGR Journal; 108-118

1682-1130
Direitos:  Copyright (c) 2019 Agricultural Engineering International: CIGR Journal
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