Thermal performance analysis of a reheating-regenerative organic Rankine cycle using different working fluids

Authors

  • M. Goodarzi Bu-Ali Sina University
  • H. Dehghani Soltani Bu-Ali Sina University

DOI:

https://doi.org/10.5755/j01.mech.21.1.10127

Keywords:

Organic Rankine cycle, reheating pressure, Thermal efficiency, exergy efficiency, dry hydrocarbon.

Abstract

Higher efficiency and optimal utilization of low-temperature heat sources, such as geothermal energy, re-quires a careful selection of working fluid and improving organic Rankine cycle (ORC). This article concerns with analyzing a new reheating-regenerative ORC. Present study considers selection of optimal working fluid and evaluation of the optimal reheating pressure ratio. It inves-tigates the influence of the turbine inlet temperature on thermal and exergy efficiencies. Results show that reheat-ing process can improve thermal performance of ORC. Derived curves for thermal and exergy efficiencies show that optimal reheating pressure ratio does not depend on turbine inlet temperature, but slightly increases with the critical temperature of the working fluid.

DOI: http://dx.doi.org/10.5755/j01.mech.21.1.10127

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Published

2015-03-02

Issue

Vol. 21 No. 1 (2015)

Section

MECHANICS OF FLUIDS AND GASES

License

The copyright for the articles in this journal is retained by the author(s) with the first publication right granted to the journal. The journal is licensed under the Creative Commons Attribution License 4.0 (CC BY 4.0).