3D simulation of earth to air heat exchanger in Ouargla region

Abstract

In this study, a three-dimensional simulation of the geothermal heat exchanger was carried out in order to improve its efficiency in air conditioning during the winter and summer seasons in the region of Ouargla, based on a previous experimentally valid study in designing and validating the geothermal heat exchanger CFD model. Using Taguchi's method to plan experiments, and this was done by selecting four factors affecting the performance of the exchanger and assigning three values (levels) to each factor. The results show that the maximum temperature difference of air between the inlet and the outlet of the EAHE is around 19.45 °C and 17.77 °C for the months of January and July, while the minimum temperature difference between the air entering and leaving the EAHE is about 2.44°C and 2.6 °C for the months of April and October.