Experimental investigation of thermal and moisture behaviors of wet and dry soils with buried capillary heating system

Ground coupled heat exchangers: A review and applications

“…Ascion et al [33] tested and concluded that best energy performance could be obtained for wet/humid soil by adopting pipe length of more than 50 m, buried at a depth of 3 m. Balghouthi et al [34] studied experimentally thermal and moisture behavior of dry and wet soil heated by buried capillary plaits, on a prototype similar to an agricultural tunnel greenhouse. It was concluded that the surface temperature amplitude was superior in wet soil as compared to dry soil.…”

“…Best energy performance obtained for wet/humid soil and for the coldest climate, adopting pipe length more than 50 m [33,34]. Climate…”

Identification of temperature and moisture content fields using a combined neural network and clustering method approach

“…The governing partial differential Eqs. (1)- (2) have been discretized by using the control-volume formulation method [28]. The spatial interpolation method used is the control-difference scheme (CDS) and the time derivatives are integrated using a fully implicit approach.…”

“…Researchers have shown that variations on the soil temperature and humidity at shallow depths present significant fluctuation on both daily and annual basis [1][2][3][4][5][6]. According to their studies, the heat flux within the soil is affected by several parameters such as solar radiation, air temperature, wind speed, time of the year, shading, soil properties etc., which present a seasonal or irregular variation.…”

Heat and Mass Transfer Behavior Prediction and Thermal Performance Analysis of Earth-to-Air Heat Exchanger by Finite Volume Method

“…Through the experiment in summer, Balghouthi et al [11] studied the thermal and moisture characteristics of dry and wet soil which are heated by buried capillary plaits under three different operational conditions: heating at 70 • C, heating at 40 • C and without heating. It was concluded that the surface temperature amplitude in moist soil was superior to dry soil.…”