Selection of Working Fluid for Supercritical Organic Rankine Cycle Operating by Taking Heat from Geothermal Sources

Authors

  • A. Kanni Raj

Keywords:

Geothermal, Solar-ORC, Enthalpy, Exergy, Efficiency, CFC, Ideal Gas Equation, Thermodynamic Equation of State, Van Der Waal’s Equation

Abstract

Supercritical Organic Rankine cycle (SRC)
based power generation from geothermal heat is
analyzed to identify good working fluid from the
list of various organic refrigerants. Also, the
fluid either CFC or HCFC with zero ozone
depletion potential is selected to make the
process eco-friendly. The SRC uses source
temperature 125-200oC and sink temperature
10-20oC. Performance analysis is done for
various fluids regarding condensation pressure,
thermal efficiency and exergy efficiency.
Thermal efficiency obtainable is 20%. Mixtures
show efficiency remaining between constituent
fluids.

Downloads

Published

2020-01-23

Issue

Vol. 2 No. 1 (2020)

Section

Articles