中文摘要：

微通道平行流气冷器性能的好坏对超临界CO2空调系统的能效比影响很大,是整个制冷系统性能高低的关键.提出了新的微通道平行流气冷器整体结构建模方法,大大降低了网格划分时间及对计算机硬件的要求,提高了工作效率.对微通道平行流气冷器扁管与集流管组合结构进行了一系列优化设计,优化结果表明,最优的参数组合为扁管间距为8.8 mm,扁管长度为500 mm,扁管排数为10,扁管与集流管的组合深度为0.25.研究结果为新产品的工程应用提供参考.

英文摘要：

The performance of micro-channel parallel gas cooler is very important to trans-critical CO2 air-conditioning system.The new modeling method is studied about micro-channel parallel gas cooler.The time of dividing meshes is shorten and requirement to computer hardware is decreased,the efficiency of modeling method is improved.A series of optimization designs are executed to combinations of flat tube and manifold of gas cooler.The optimal combination is that the space between flat tubes is 8.8 mm,the length of flat tube is 500 mm,rows number of flat tube is 10,the combination depth of flat tube and manifold is 0.25.The work will provide the reference for engineering application of new design.