车用平行流式冷凝器流程扁管数布置的优化设计

基于平行流冷凝器换热和压降的理论计算方法、拉丁超立方实验设计方法;多项式响应面模型以及惯性因子改进和模式改进的粒子群优化算法,提出一种车用平行流冷凝器流程扁管数分配的优化设计方法;并采用该方法对某平行流冷凝器进行优化设计。结果表明,在设计工况下,优化后的冷凝器换热量较原始模型提高了3. 6%,冷媒压降降低了21. 4%。在非设计工况下,优化后的平行流冷凝器换热量较优化前分别提升了4. 5%和5. 3%,冷媒压降分别降低了19. 7%和18. 5%。

Optimization on the Distribution of Flat Tube Number in the Refrigerant Circuitry in Condenser for Vehicle

An optimization method on the distribution of flat tube number in the refrigerant circuitry of parallel flow condenser for vehicle was presented by adopting the theoretical calculation method of heat transfer and pressure drop of condenser, the Latin hypercube method, polynomial response surface model and particle swarm optimization revised in the field of inertia factor and mode improvement. Then, this method was applied for optimizing the distribution of flat tube number in the refrigerant circuitry of condenser. The results showed that compared with the original condenser the heat transfer of optimized condenser improved by 3.6% and the pressure drop of coolant reduced by 21.4% on the design condition. On the other conditions, the heat transfer of optimized condenser respectively were 4.5% and 5.3% higher than the one of original condenser, and its pressure drop of coolant respectively were 19.7% and 18.5% lower than the one of original condenser.