Turbine inlet parameters´ effect on diesel waste heat recovery by Organic Rankine Cycle

Simulaed thermal properties of exhaust gas ejected by EV80 diesel generator, and recovered this part of heat by means of Organic Rankine Cycle (ORC). Selected R123 as the working fluid to run on the programming process of calculation. The result shows: at the point condition of diesel generator, exhaust heat is fixed, the mass flow rate required by the Organic Rankine cycle waste heat recovery system reduces and increases respectively as the turbine inlet temperature and pressure increasing. The ORC efficiency is basically unchanged with the turbine inlet temperature increasing; In the context of same temperature, the supercritical cycle requires more working fluids than the subcritical cycles in heat exchanger, turbine generates more power output and the thermal efficiency is much higher and the supercritical cycle can recover more exhaust heat.