Optimum distribution of heat exchanger inventory for power density optimization of an endoreversible closed Brayton cycle

In this paper, the power density (defined as the ratio of the power output to the maximum specific volume in the cycle) is taken as the objective for performance optimizations of an endoreversible closed Brayton cycle coupled to constant-temperature heat reservoirs in the viewpoint of finite-time th ermodynamics (FTT) or entropy generation minimization (EGM). The optimum he at conductance distribution corresponding to the optimum power density of t he hot- and cold-side heat exchangers for the fixed heat exchanger inventor y is analysed using numerical examples. The influence of some design parame ters on the optimum heat conductance distribution and the maximum power den sity and the optimum pressure ratio corresponding to the maximum power dens ity are provided. The power plant design with optimization leads to higher efficiency and smaller size.