Designing Process of Cogeneration Power and Sweet Water from Waste Heat of Ship Engine

In this research, fresh water and power have been produced by using the heat output from the ship's engine. The cycle used in this process, the organic Rankine cycle (ORC) has been a regenerative model. The desalination system is of the type (Multi Effect desalination). This system has three stages, in each stage, with the warming and evaporation of sea water, some of the sweetened water is separated so that the salt in it is completely separated. ASPEN HYSYS software has been used to simulate this process. Energy and exergy analysis, the process is calculated for all currents to obtain the amount of exergy destruction in all equipment. The result is that the amount of production power from the Rankin Organic Cycle is 254.8 kW. The amount of water produced by the desalination system is 4899 (kg / h) and the most exergy destruction. among the equipment in Turbine LP has the highest destruction of exergy and in heat exchangers of converter (HX-1) has the highest exergy destruction by analyzing the sensitivity and effect of temperature, mass flow and pressure parameters on the production of power and freshwater, we have reached the conclusion that by increasing the mass flow and temperature increasing the fresh water and power. The amount of power per year is equal to (kW) 2370606.24 and the amount of water produced is 1741926 (kg/year) and the availability for ORC is 0.9833 and for MSF is 0.9756.