Investigating the design of ORC heat introduction for single and two phase geofluid such as brines with or without non-condensable gases

A modularised thermophysical property model for capturing single- and two-phase geothermal fluids of arbitrary composition (dissolved minerals and gases) has been developed, using amongst others Reaktoro, CoolProp and ThermoFun as the underlying partitioning and property estimation engines. The resultant model has been validated against some of the incompressible binary fluids implemented within CoolProp as well as field experimental data. Case studies are presented highlighting the importance of accurate thermophysical properties for the design of geothermal ORC power plants.