【摘要】 基于不可逆布雷顿制冷循环模型 ,导出循环制冷率和性能系数之间优化关系所应满足的方程 ,利用数值解 ,研究内不可逆性和传热不可逆性对优化性能的影响。讨论了循环的各种优化性能 ,所得结果对实际制冷系统的优化设计有一定的指导意义。更多还原

【Abstract】 Based on the irreversible Brayton refrigeration cycle model, the satisfied equation about the optimal relation between the cooling rate and the coefficient of performance is derived. By using numerical solutions, the influence of the internal irreversibility and the heat transfer irreversibility on the optimal performance of the cycle is investigated. Several optimal performances of the cycle are discussed. The results obtained will be helpful to the optimal design of the practical refrigeration system.更多还原