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采用线性加权法,将传热系数、充注量以及蒸发器内表面积线性加权为多目标函数进行数值仿真,对翅片管换热器进行了结构优化。针对翅片间距、翅片厚度、换热管管径、管子间距、管排数、每排管子数等结构参数对目标函数作了敏感性分析。结果表明:翅片间距、换热管管径、管子间距、管排数、每排管子数等结构参数对传热系数的影响比较明显,也较复杂;但它们对最小充注量和蒸发器所需内表面积的影响则表现出明显的线性关系。
By using the linear weighting method, the heat transfer coefficient, the charging capacity and the inner surface area of the evaporator were weighted linearly to simulate the multi-objective function. The finned tube heat exchanger was optimized. According to the structural parameters such as fin spacing, fin thickness, tube diameter, tube spacing, tube row number, tube number per row, the sensitivity of the objective function was analyzed. The results show that the structural parameters such as fin spacing, tube diameter, tube spacing, tube row number, tube row per tube have obvious influence on the heat transfer coefficient and are more complicated. However, their influence on the minimum filling amount and the evaporator The effect of the required inner surface area shows a clear linear relationship.