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1 janvier 2019
- handle: 10670/1.koleno
Ce document est lié à :
10.15174/au.2019.2112
info:eu-repo/semantics/openAccess
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Buildings--Heating and ventilationCiter ce document
Jorge Flores-Velázquez et al., « CFD to analyze energy exchange by convection in a closed greenhouse with a pipe heating system », Acta universitaria, ID : 10670/1.koleno
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In some locations with harsh winters, the heat stored in the soil may not be enough to heating a greenhouse, and so artificial heat must be supplied. The objective of this study was to evaluate a numerical model under local weather conditions, in Humboldt University of Berlin, Germany, during winter 2011 to analyze the air dynamics generated through a tube pipe heating system convection in a closed greenhouse, for it to be applicable in producing cold regions in Mexico. Results showed that 100 W m-2 of heat released from the soil kept the environment within acceptable ranges for plant growth from noon to evening. However, the energy lost by long-wave radiation during the night lowered the air temperature to minimal basal temperature. Heat from the pipes placed underneath the crop promoted air movement by convection, producing a uniform distribution of temperature and humidity within the plant canopy.