Comparative Thermodynamic Analysis and Optimization Design of Open Brayton Cycle Configurations
The Brayton cycle is characterized by high efficiency and compactness,making it suit-able for use in nuclear reactor thermal-electric conversion systems.In the present work,a system simulation model was built based on EBSILON software for four open Brayton cycle configurations:simple cycle,simple regenerative cycle,reheat regenerative cycle,and intercooled reheat cycle,and key parameters were analyzed.The cycle parameters were optimized with the objectives of cycle efficiency and power density,and compared with the closed Brayton cycle.The results revealed that among the four configurations,the reheating and recuperative cycle achieved the highest cycle efficiency at 25.44％,while the simple recuperative cycle demonstrated the highest power density,reaching 171.13 kW·m-3.Improving the open cycle into the closed Brayton cycle increased the maximum cycle efficiency by 12.56 percentage points and the maximum power density by 11.87 kW·m-3.
open brayton cyclethermodynamic analysiscycle parameter optimizationconfigu-ration comparison
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