Paper Title
Thermo Dynamic Analysis of an Ejector-Organic Rankine Cycle with Heat Recovery Vapor Generator

Abstract
Industrial processes produce significant quantities of waste heat resources. Nevertheless, the predominant portion of low and medium-temperature waste heat is discharged directly into the environment. To alleviate its adverse effects, an ejector-organic Rankine cycle (EORC) is employed to enhance the recovery of energy from low- and medium-temperature waste heat. In this study, a thermodynamic analysis is conducted on EORC integrated with a heat recovery vapor generator (HRVG), utilizing waste heat from an industrial process as the heat source. A model of the ejector is chosen from the literature for the EORC system. The authors conducted the performance study based on source temperature and expansion ratio across the turbine in order to find the optimal performance of the system in terms of work net output and refrigeration effect. The variation in the expansion ratio resulted in an increase in refrigeration effect and work net output, accompanied by higher value energy and exergy efficiency, yielding a value of 0.37 and 36.18% respectively. Keywords - Combined Cycle, Organic Rankine Cycle, Ejector Organic Rankine Cycle, Ejector, Waste Heat