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NOVEL CONFIGURATION OF ORGANIC RANKINE CYCLE FOR WASTE HEAT USE
Omar Al-Ani, Patrick Linke, Mirko Stijepovic, Athanasios Papadopoulos
Session: Poster session & Sponsor Exhibition
Session starts: Monday 07 October, 14:00
Omar Al-Ani (Texas A&M University at Qatar)
Patrick Linke (Texas A&M University at Qatar)
Mirko Stijepovic (Texas A&M University at Qatar)
Athanasios Papadopoulos (Aristotle University of Thessaloniki and Centre for Research and Technology-Hellas)
Abstract:
Organic Rankine Cycles (ORC) received a lot of attention in recent years as a promising technology to convert low grade heat to power. Numerous researches have shown that ORC offers substantial advantage over conventional Rankine cycle. The ORC may be employed to produce power from variety low grade heat sources. The performances of ORC depend of heat source and employed working fluid. Multiple studies have been conducted on different techniques to increase the efficiency of the ORC. Most of studies are devoted to finding of optimal working fluid with favorable thermodynamic and thermo-physical properties. Utilization of working fluids composed of two or more fluids seems to be promising path for enhancing ORC performances.
From the other side a few studies are performed with intention to explore possible configuration modifications of ORC. In this study, we examine a novel configuration of an Organic Rankine Cycle (ORC). The use of a novel configuration allows for higher thermal efficiency by decreasing the pinch point between the heat source and the working fluid. Exergy analysis is performed to examine the various thermodynamic performance measures in such a configuration and compared to a simple ORC configuration. The exergy destruction, thermal efficiency, and second law efficiency are compared for each configuration. Also, each component is examined to locate where significant irreversibilities occur. A case study will be used to illustrate the benefits of using the novel configuration.