Energetic and entropy analysis of a novel transcritical CO2 two-stage compression/ejector refrigeration cycle for shipboard cold chamber

The adverse effects of global warming and climate change require critical measures for marine refrigeration technology because its impact on greenhouse gas emissions. A novel transcritical CO2 two-stage compression/ejector cycle shipboard cold chamber is proposed in this research. comparative analysis was conducted between the basic compression equipped with a two-phase ejector considering coefficient performance. Meanwhile, analyzed using entropy to elucidate distribution irreversible losses each component cycle, system parameters such as evaporating cooler outlet temperatures well intermediate discharge pressures were investigated. results showed that had largest power capability loss, accounting 26.95 % overall system, which followed by low-pressure compressor 26.06 %. performance significantly increase temperature pressure decrease increases. Furthermore, production components decreases gradually increasing temperature, greatest reduction ejector. In addition, remains constant high-pressure side temperature.