Published Paper Details:

As we know that in 'Internal Combustion Engine' total heat supplied from fuel is not utilized to develop useful work. Out of total heat 20-30% heat is wasted in cooling medium such as water and 40-50% is wasted in exhaust gases. So, we have inherent scope to utilize this waste heat. In conventional system we are taking benefits of heat lost through exhaust gases with the help of turbocharger to supply compressed air to inlet manifold. So, there is no any system which uses heat wasted from cooling medium. With this paper, we tried to use that wasted heat from cooling medium for developing power with the help of turbine. In this system we are going to replace cooling water by appropriate refrigerant. Therefore, we are passing liquid refrigerant through cooling jacket of engine where this liquid refrigerant will absorb the heat from engine cylinder and get converted into vapour thus engine will get cooling effect. Therefore, we get vapour refrigerant with high temperature and pressure which would be useful to run a steam turbine. Before the turbine we used nozzle to convert pressure energy into kinetic energy in order to obtain required power from turbine. In the turbine the expansion of vapour refrigerant takes place and work get obtained from generator. The expanded refrigerant then further converted into liquid by passing through radiator/capillary tube. In radiator / capillary tube at proper pressure the refrigerant of vapour phase gets converted into liquid phase. This liquid refrigerant is further recycled for engine cooling (closed loop system). Thus, we have developed an efficient system for utilizing waste heat from cooling medium.