Nowadays the car air conditioning system is mainly used "VCRS" which absorbs and removes the heat from the interior of the car which is the space to be cooled and rejects the heat to the atmosphere . In the vapor compression refrigeration system, the system uses the power of the motor shaft as input power to drive the compressor of the cooling system, so the motor has to produce extra work to run the compressor of the cooling system. cooling using an extra amount of fuel. This loss of power of the vehicle for refrigeration can be neglected using another refrigeration system, ie a "vapor absorption refrigeration system". As a known thing about VAS these machines required low grade power for operation. Therefore, in such types of systems, a physicochemical process replaces the mechanical process of the vapor compression refrigerant system using energy in the form of heat rather than mechanical work. This heat obtained from the exhaust of the high-power internal combustion engines