Investigation of First and Second Law forAutomobile Waste Heat Recovery Vapour Refrigeration Cycle

AliBr-H₂O absorption refrigeration cycle has been analysed. Energy and exergy analyses have been performed on this conceptual cycle. The analysis involves the determination of effects of generator, absorber and evaporator temperatures on the energetic and exergetic performance of these systems. The calculated exhaust gas energy availability suggests the cooling capacity can be highly improved for a dedicated system. Exhaust hydrocarbon emissions were higher when the refrigeration system was installed in the engine exhaust, but carbon monoxide emissions were reduced, while carbon dioxide concentration remained practically unaltered. Through the study and by analysing the obtained results it is evident that the waste heat based refrigeration system is economic, ecofriendly with zero CO₂ emissions.