Optimization of a Reverse-Brayton cycle with inter-cooling and regeneration

• DOI: 10.1016/j.csite.2023.103865
• Publication Date: 2023-12-06T16:52:35Z
• Authors: Han Yang; Chunxin Yang
• Keywords: Brayton cycle; Coefficient of performance; Thermodynamic cycle; Isentropic process; Working fluid

A Reverse-Brayton cycle represented by the B787 electrical driven environmental control system is used as analysis object, including thermodynamic process of two-stage compression, intercooling, and regeneration. An analytical expression for performance derived based on endoreversible model (ETM). Combined with a genetic algorithm, an ETM-based optimization approach (ETM-OA) proposed. Using this method, it found that coefficient increased 34.1 % 48.4 under two typical flight conditions, respectively, corresponding entropy generation number reduced 30.2 51.1 %, respectively. Both ETM-OA show electric supercharging module, secondary heat exchanger, air machine are key components system. This study provides convenient method obtaining thermal power conversion mechanism complex cycles conducting analysis.