Numerical Analysis of Minimum Ground Temperature for Heat Extraction in Horizontal Ground Heat Exchangers

In this work, numerical simulation calculations were performed to investigate the minimum ground temperature that occurs when extracting thermal energy in a horizontal heat exchanger system Central European climate. The influence of conductivity, flux extracted from ground, periodic interruptions operation exchanger, supply relative humidity ambient air, evaporation rate coefficient, and convective transfer coefficient on investigated. Based simulation, it was found high value conductivity favorably affects installation with exchanger. Both reduction maximum taken as well effectively protects against excessive cooling. Further, summer only slightly raises its temperature, decrease air coefficient. change has no significant impact annual temperature.