Abstract: Abstract Efficiency of diesel engine is about 35-40 % remaining energy go waste. Maximum energy wastes in exhaust. In diesel engine 30-32% energy go waste in exhaust. So it is important to recover energy from exhaust. Approximately 15% of all the electricity produced in the whole world is employed for refrigeration and air conditioning system. During recent years research aimed at the development of technologies that can offer reductions in energy consumption. By reason that absorption refrigeration technologies have the advantage that the peaks of requirements with the availability of the waste heat. My aim is to recover heat from exhaust gas and use it for absorption refrigeration system (Electrolux refrigeration system).