Abstract
Solar CO_2 Rankine System (SCRS) has been proposed, which can generate electrical and thermal energy by using solar thermal energy as an energy source and carbon dioxide as a working fluid. Now, this system is needed to be optimize. For the optimization of driving, a thermal pump is installed in parallel with a feed pump. Driving source of thermal pump is only the solar energy. The thermal pump is composed of two heat exchangers and has low power consumption. As a result, we can see rankine cycle including supercritical region by using thermal pump. In addition, to investigate superiority of the thermal pump over the feed pump, thermal efficiency of this system was simulated. We can see thermal efficiency of the thermal pump is higher than that of the feed pump.
