Modeling and optimal design of ground air collector for heating in controlled environment greenhouse.

Title:Modeling and optimal design of ground air collector for heating in controlled environment greenhouse.
Authors:Jain, Dilip¹
Tiwari, G.N. gntiwari@ces.iitd.ernet.in
Source:Energy Conversion & Management; May2002, Vol. 43 Issue 8, p1357, 16p
Document Type:Article
Subject Terms:*GREENHOUSES
*MATHEMATICAL models
*SOLAR energy
Author-Supplied Keywords:Greenhouse
Controlled environment
Solar energy
Ground air collector
Abstract:A mathematical model is devised to study the thermal behavior of a greenhouse while heating with a ground air collector (GAC). A computer program based on MatLab software has been used to predict the plant and room temperatures as a function of various design parameters of the ground air collector. Extensive experiments have been conducted during December 2000 to March 2001 for an even span greenhouse of effective floor area of 24 m² with a GAC and having a brick north wall. The model was validated experimentally in the climate of Delhi for the winter season. A parametric study involves the area of the GAC, mass flow rate and heat capacity. The predicted plant and room temperatures show fair agreement with the experimental values. [Copyright 2002 Elsevier]
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Author Affiliations:¹Centre for Energy Studies, Indian Institute of Technology, Hauz Khas, New Delhi 110 016, India
ISSN:0196-8904
Accession Number:8791894

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