How to effectively utilize low and medium temperature energy is one of the solutions to solve the energy shortage and environmental pollution problems. Solar-thermal power-plants have enjoyed limited success in the energy market to date. The ability to better characterize the performance of existing solar-thermal technologies as well as investigate the potential of new technologies is a crucial step in developing more economically viable designs. Organic Rankine cycles have unique properties that are well suited to solar power Generation and also suitable to our country topography especially...