Microclimatic Modeling and Analysis of a Fog-Cooled Naturally Ventilated Greenhouse

Microclimatic Modeling and Analysis of a Fog-Cooled Naturally Ventilated Greenhouse+



Debajit Misra, Sudip Ghosh



In the present paper, a thermal model has been
presented for predicting the thermal environment inside a fog cooled
naturally ventilated greenhouse. Experiments were conducted on a
polyethylene covered greenhouse having 250 m2 ground area located at
Coochbehar (latitude: 26.2o N, longitude: 89oE), West Bengal, India.
The greenhouse was cooled by intermittent fogging with three distinct
fogging cycles during the experiments. The greenhouse air temperature
profiles as predicted by theoretical model were validated for different
fogging cycle configurations. The model prediction and experimental
results build up a good match (co-efficient of correlation was in range
of 0.85 to 0.97). It was observed that fogging cycle configuration
(spray time and spray interval combination) influences greatly the
cooling performance of the fogging system. Further analysis revealed
that greenhouse temperature could be maintained 2-5oC below the ambient
temperature by employing suitable fogging cycle, maintaining the
relative humidity within acceptable level. 



10.22161/ijeab/2.2.57



ijeab.com/upload_document/issue_files/57 IJEAB-APR-2017-31-Microclimatic Modeling and Analysis of a Fog-Cooled Naturally Ventilated Greenhouse.pdf



ijeab.com/submit-paper/

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