Abstract
This paper aims to predict ground temperature variation with depth for time variant ambient air temperature and solar radiation data for Jamshedpur, India. Finite difference method has been used to discretise computational domain and a scheme has been employed to determine the numerical solution. The numerical results have been validated with experimental measurement of ground temperature. The diurnal temperature variation for the hottest and the coldest days and annual variation for the year 2016 have been computed. The diurnal temperature variation is found up to 0.4 m depth of soil whereas annual temperature variation is up to a depth of 4 m.
Highlights
Prediction of soil temperature has important applications such as the passive heating and cooling of buildings and agricultural greenhouses
Khatry et al (1978) and Moustafa et al (1981) presented ground temperature variation with depth taking into account the periodicity of solar radiation and atmospheric temperature for Kuwait
Solar radiation, and wind speed for the hottest day and the coldest day are shown in Figs. 2, 3, and 4, respectively
Summary
Prediction of soil temperature has important applications such as the passive heating and cooling of buildings and agricultural greenhouses. For the design of earth-to-air heat exchangers, it is necessary to know the ground temperature at different depths. The ambient air temperature and solar radiation are the main meteorological parameters for periodic variation in thermal regime of the soil. Soni et al (2015) presented an excellent review of research in the area of earth-air heat exchangers. Chandrakant (1975) studied the ground surface temperature using the heat balance equation and considering with or without soil heat flux. Khatry et al (1978) and Moustafa et al (1981) presented ground temperature variation with depth taking into account the periodicity of solar radiation and atmospheric temperature for Kuwait. Holmes et al (2008) proposed a new model for the prediction of ground surface and depth-wise temperature difference using ground flux profile. Paul et al (2004) performed experimentation analysis of soil temperature of forest area in Australia. Holmes et al (2008) proposed a new model for the prediction of ground surface and depth-wise temperature difference using ground flux profile. Ozgener et al (2013) and Chow et al (2011) measured and predicted the temperature of soil at various depths in Izmir, Turkey, and Hong
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