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Thermal modelling and experimental validation of ground temperature distribution in greenhouse
Author(s) -
Ghosal M.K.,
Tiwari G.N.,
Srivastava N.S.L.,
Sodha M.S.
Publication year - 2004
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.950
Subject(s) - greenhouse , environmental science , heat exchanger , atmospheric sciences , thermal , greenhouse gas , air temperature , new delhi , meteorology , geography , thermodynamics , geology , physics , horticulture , biology , oceanography , metropolitan area , archaeology
A periodic analysis for daily and monthly variations of ground temperature with depths is presented both under greenhouse and bare surface conditions of Delhi and for bare surface condition in other climates of India in order to design an efficient earth to air heat exchanger for greenhouse system. Calculations were carried out for a typical winter and summer day of Delhi in year 2000. Predicted values of ground temperature at 1 m depth were in fair agreement with experimental values under both conditions. Ground temperatures at various depths inside greenhouse were found to be on an average 7–9°C and 3–6°C higher than bare surface for daily and monthly variations respectively. Copyright © 2004 John Wiley & Sons, Ltd.