iarjetIARJETIARJET2708-5163https://doi.org/10.47310/iarjet.2022.v03i01.009A Review of the Study of the Cooling by Hybrid Solar Air ConditionersMokhtarNooriSaddamMushtaqIsmaelHasanMech. Eng. Department, College of Engineering, University of Thi-Qar, AL-Nasiriyah, IraqThe solar energy system is often used, which combines solar thermal heating and cooling by heat in the ground. The solar cooling system is one of the highly efficient systems in work; also it is one of the healthy and never harmful systems. It absorbs solar energy to heat the indoor medium with a vacuum solar collector. The refrigerant from the compressor passes a copper coil inside the accumulator and conducts heat exchange. The heated refrigerant then goes through a cycle inside the system not only for heating but also for cooling as well. The energy from the sun is fully utilized and therefore, less mains energy is required in the process, which in turn allows for the installation of smaller compressors, which offer better energy savings. This system adopts a four-fold heat exchanger as one of the core components of this air conditioner. The effective heat area is increased by 20-30% against the usual V-type and flat plate heat exchanger, which greatly increases the cooling efficiency. This study gives an overview of most studies on solar energy and its use and cooling with hybrid solar systems.