Thermal performance analysis of organic flash cycle using R600A/R601A mixtures with internal heat exchanger

In this study, the thermal performance of an internal heat exchanger-organic flash cycle system driven by geothermal water was investigated. The R600a/R601a mixtures were selected as working fluid. effects mole fraction on absorption capacity heater, temperature rise cold fluid in exchanger, net power output, efficiency, and electricity generation costs analyzed. outputs, costs, efficiency simple organic systems com-pared. Results showed that using (0.7/0.3 fraction) has largest which increased output 3.68% 42.23% over R601a R600a systems, respectively. When 0.4, reduction (1.77% compared with system). exchanger can increase cycle, but does not necessarily increase.