Effect of ambient temperature organic Rankine cycle geothermal power plant with Aspen plus

Abstract

This study concerns a thermodynamic analysis of the Organic Rankine Cycle for energy conversion from geothermal resources. Some thermodynamic variable was simulated by using Aspen plus. The equation of state is expressed by the Peng-Robinson formulation. Analysis carried out considering the variance of ambient temperature (27 C, 30 C, 33 C, 35 C, and 40 C) on air-cooled in the condenser. Result is obtained for several set operating parameters, such as the evaporation and condensation pressure for the variance of ambient temperature, the mass flow rate of the geothermal fluid. From results, the ambient temperature has affected for power generated of ORC. The lower ambient temperature then will increase the power generate of the system.