Performance of Dual System of Cooling-Thermal Energy Conversion Applying Ejector

Abstract

This research proposes the system called ·Cooling-Thermal Energy Conversion Dual System Applying Ejector· which practically applies an ejector to OTEC. This proposed system presents the higher system efficiency due to application of an ejector and reduced initial and operating cost. The main results obtained from the simulation analysis are as following. The cooling capacity tended to decrease as the entrainment ratio increased, and the system using R134a generally presented the highest cooling capacity and COP. In terms of generation system, the highest turbine gross power was obtained when R134a working fluid was applied. The efficiency of the system showed decrease as the entrainment ratio increased. Lastly, application of the ejector enhanced the efficiency of generation system using R134a relatively about 33%, from 4.2% to 5.6%.