A thermodynamic analysis and feasibility study of Organic Rankine Cycle (ORC) were carried out as a waste heat recovery system for a marine diesel engine. ORC and its combined cycle with the engine were simulated and its performance was estimated theo...
A thermodynamic analysis and feasibility study of Organic Rankine Cycle (ORC) were carried out as a waste heat recovery system for a marine diesel engine. ORC and its combined cycle with the engine were simulated and its performance was estimated theoretically under the various engine operation conditions and cooling water conditions using R245fa as working fluid. According to the thermodynamic analysis, ~10% of thermodynamic efficiency of the cycle was able to be realized with the low temperature heat source below 250℃. The electric power output of the ORC was estimated to be about 4% of the mechanical power output of the engine considering additional pumps for cooling water and circulation of the heat transfer medium.