A Review of Studies on Geothermal Energy System Applied on Sub-Saharan Climate Regions

Due to fossil fuel reserves diminishing, electrical energy costs increasing, air pollution and global warming, properly designed geothermal heat exchangers offer a sustainable alternative to reduce the need for conventional compressor-based air conditioning systems, ground-air heat exchangers have been recognized as being among the most energy efficient systems for space heating and cooling in residential buildings and agricultural facilities and horticultural facilities. This paper aims to give an overview of the implementation of Ground Heat Exchanger (GHE) for passive air conditioning for any applications. The overview switches focus to systems which utilize the ground as a heat source; this covers general definitions and the most factors influencing on GHE performances; which need to be considered from ground thermal properties to piping materials. Also, this article includes a literature review of the main scientific research that implemented in low-Temperature geothermal energy like Algerian climate, in order to reduce the energy needs and greenhouse gas emission.