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首页> 外文期刊>International journal of green energy >OPTIMUM HEAT CONDUCTANCE DISTRIBUTION FOR POWER OPTIMIZATION OF A REGENERATED CLOSED BRAYTON CYCLE
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OPTIMUM HEAT CONDUCTANCE DISTRIBUTION FOR POWER OPTIMIZATION OF A REGENERATED CLOSED BRAYTON CYCLE

机译：再生封闭式布雷顿循环功率优化的最佳导热系数分布

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摘要

In this paper, the power output of the cycle is taken as objective for performance optimization of an irreversible regenerated closed Brayton cycle coupled to constant-temperature thermal energy reservoirs in the viewpoint of finite time thermodynamics (FTT) or entropy generation minimization (EGM). The analytical formulae about the relations between power output and pressure ratio are derived with the heat resistance losses in the hot- and cold-side heat exchangers and the regenerator, the irreversible compression and expansion losses in the compressor and turbine, and the pressure drop loss in the piping. The maximum power output optimization is performed by searching the optimum heat conductance distribution corresponding to the optimum power output among the hot- and cold-side heat exchangers and the regenerator for the fixed total heat exchanger inventory. The influence of some design parameters, including the temperature ratio of the heat reservoirs, the total heat exchanger inventory, the efficiencies of the compressor and the turbine, and the pressure recovery coefficient, on the optimum heat conductance distribution and the maximum power output are provided. The power plant design with optimization leads to smaller size including the compressor, turbine, and the hot- and cold-side heat exchangers and the regenerator.
机译：本文从有限时间热力学（FTT）或熵产生最小化（EGM）的角度，以循环的功率输出为目标，以优化与恒温热能库耦合的不可逆再生封闭布雷顿循环的性能。根据热侧和冷侧热交换器和再生器的热阻损失，压缩机和涡轮机的不可逆压缩和膨胀损失以及压降损失，得出了功率输出与压力比之间关系的解析公式。在管道中。通过针对固定的总热交换器库存，在热侧和冷侧热交换器和蓄热室之间搜索与最佳功率输出相对应的最佳导热率分布，来执行最大功率输出优化。提供了一些设计参数（包括储热器的温度比，热交换器的总存量，压缩机和涡轮的效率以及压力恢复系数）对最佳热导分布和最大功率输出的影响。 。经过优化的发电厂设计可缩小尺寸，包括压缩机，涡轮机，热侧和冷侧热交换器以及再生器。

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