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提出了后回热式布雷顿-两平行逆布雷顿联合循环模型。对该联合循环进行了能量分析,导出了联合循环热效率和比功的表达式,以热效率和比功为目标对该联合循环的性能进行了优化,分析了回热器有效度和其他参数对最优热效率和最优比功的影响。分析表明,以热效率为优化目标时,该联合循环的最优热效率随着回热度的增加而增加,其相应比功随着回热度的增加而减小;以比功为优化目标时,回热度对该联合循环的最优比功的影响很小,其相应热效率随着回热度的增加而增加。
A post-recuperative Brayton-two parallel inverse Breton combined cycle model is proposed. The energy of the combined cycle was analyzed and the expressions of the thermal efficiency and specific power of the combined cycle were derived. The performance of the combined cycle was optimized with the goal of thermal efficiency and specific power. The effectiveness of the regenerator and other parameters were analyzed. Optimal heating efficiency and the best ratio of the impact. The analysis shows that when the thermal efficiency is the optimization goal, the optimal thermal efficiency of the combined cycle increases with the increase of the regenerated heat and the corresponding specific work decreases with the increase of the regenerated heat. When the specific work is the optimization target, The effect on the optimal specific power of the combined cycle is small, and the corresponding thermal efficiency increases with the increase of the heat recovery.