Organic rankine cycle design as optimization of dry-steam system geothermal power plant

Abstract

Optimizing the performance of a Geothermal Power Plant (PLTP) can be done in various ways, one way that can be done is by adding an Organic Rankine Cycle (ORC). ORC with components consisting of 4 main systems, namely Evaporators, Turbines, Condensers and Pumps. It will be added to a dry-steam geothermal system. R290 is choosen as working fluid (WF) among four other candidates such as R134a, R600, R600a, and R152a. The ORC system optimization is focused on the number of WF masses that can be done in the ORC evaporator system. The ORC analysis results in a total energy of 11589kW with thermal efficiency of 17%. Energy produced by ORC can increase PLTP energy production by 9%.