Numerical Analysis of Thermal Properties in Ground-Coupled Heat Exchanger

Passive cooling systems have become crucial because of the damaging effects of traditional air conditioning systems on the environment and their excessive energy consumption. An effective passive cooling system uses a GCHE (ground-coupled heat exchanger) to use the earth as a heat sink or source. The GCHE would use around 76.5% less energy to produce the same level of cooling on a normal summer day than traditional air conditioning systems. The soil temperature is significantly lower compared to the surrounding air in summer, and conventional GCHEs are deeply embedded in the soil. They are typically difficult to install and maintain as a result of their deep burial. The GCHE, a near-surface with short-grass ground cover, is one alternative, where there is sufficient temperature difference at very low depths only. The current study examines the impact of outlet temperature on parameters like inlet airflow rate, intake air temperature, the thermal conductivity of soil, pipe material, tube thickness, and pipe diameter. The varied thermal conductivity soils from France, Ajmer, and Jodhpur have been taken, and all of their parameters have been compared with the results of the current study.