Performance Analysis of Supercritical Organic Rankine Cycles

Jian Qiang Gao; Xin Sun; Nan Nan Xue; Hai Kun Xing

doi:10.4028/www.scientific.net/AMR.781-784.2411

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 781-784Performance Analysis of Supercritical Organic...

Performance Analysis of Supercritical Organic Rankine Cycles

Abstract:

Supercritical Rankine cycles using organic fluids as working fluids in converting low-grade energy to high-grade power energy are investigated in the study. The main purpose is to identify suitable working fluids which may yield high system efficiencies in a supercritical Organic Rankine Cycle (ORC) system. R123, R134a, R152a, R22, and R245fa are used for the research. Results show that: at a constant superheating of expansion outlet, system efficiency improves with the increasing of evaporation pressure for all the working fluids and supercritical ORC has a higher efficiency than sub-ORC process. Furthermore, R152a performs the best compared with other refrigerants and is suitable for SORC system.

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Periodical:

Advanced Materials Research (Volumes 781-784)

Pages:

2411-2414

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.781-784.2411

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Online since:

September 2013

Authors:

Jian Qiang Gao*, Xin Sun, Nan Nan Xue, Hai Kun Xing

Keywords:

Efficiency, Organic Rankine Cycle (ORC), Supercritical Pressure, Working Fluid

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