Exergy Destruction Analysis about S-CO_2 Power Cycle Applied In Marine Engine Heat Recovery System

摘要

The S-CO_2 Brayton cycle is widely used in any fields now. It mainly consists of four components: compressor, condenser, evaporator and Turbine. The exergy destruction and irreversibility analysis about this kind of system was presented, which is applied in the marine engine heat recovery system. The objective of the present study was to find the component with primary irreversibility or exergy destruction in the system. The physical model is built. This paper Exergy analysis in this paper is based on the energy analysis method, a kind of the second law of thermodynamics. It reveals the status of available energy utilization from the aspects of the energy quality in the waste heat recovery system. Through the work of this paper, it also lays basic foundation for the design of a more reasonable s-CO_2 system for heat recovery.