This paper proposed a new configuration of heat recovery cycle integrating PTES with ORC. A thermodynamic model was built to study the charging process of PTES. A parametric analysis has been conducted to evaluate the performance of the charging process. This paper defined the efficiency of the charging process of PTES with/without ORC. The isentropic efficiency of compressor/expander, the pressure ratio, and the designed temperature have been chosen to analyze the performance of the charging process. The proposed solution can be potentially used to improve the round-trip efficiency of PTES.
Keywords Pumped thermal electricity storage, Organic Rankine cycle, Performance analysis, Heat recovery