The thermodynamic performance of four working fluids in an
Organic Rankine power cycle was analyzed for enhanced
geothermal systems for four geofluid source temperatures. Saturated,
superheated and transcritical cycles were used depending on
the geofluid source temperature and the working fluid critical
temperature. The thermophysical properties of the working fluids,
the cycle type and the ORC operating conditions are the key factors
affecting the EGS power plant performance.
The results show that