Abstract
CO_2 is attractive as a working fluid due to GWP of CO_2 being much less than R134a. Supercritical CO_2 Solar Rankine System (SCSRS) has been proposed for both electric power generation and thermal energy supplies. In order to optimize the SCSRS, the solar collectors have to be considered in much more detail. In the present study, arrangements of array of solar collectors are studied, in consideration of series or parallel arrangement, for estimating the energy collecting efficiency. From the experimental results, it was found that with keeping the same mass flow rate, in a summer time operation, the series arrangement of solar collectors gave highest performance characteristic of heat collection efficiency of the system.
