强化换热扁管结构最优化分析

贺士晶¹，阎昌琪²，孙中宁²，刘曙光¹

(1. 东北林业大学 土木工程学院，黑龙江 哈尔滨，150040；
2. 哈尔滨工程大学 核科学与技术学院，黑龙江 哈尔滨，150001)

摘 要：基于扁管传热和阻力实验研究，从换热设备小型化角度，以相同换热量和泵功耗下单管体积作为评价换热元件性能的评价准则，对不同压扁程度的扁管进行评价分析。在某一换热工况下对扁管结构尺寸进行优化设计计算。计算结果表明：以圆管为比较基准，在满足给定约束条件具有相同换热量和泵功耗的条件下可以使换热管的体积减小46.4%，可见优化效果显著；该方法可以为工程设计提供参考。

关键词：扁管；强化换热；优化设计

Structural optimization analysis of flat tube for heat transfer enhancement

HE Shi-jing¹, YAN Chang-qi², SUN Zhong-ning², LIU Shu-guang¹

(1. College of Civil Engineering, Northeast Forestry University, Harbin 150040, China;
2. College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, China)

Abstract:Based on the heat transfer and resistance experiment, the evaluation and analysis on the volume of single flat tube with different degrees of flattening were discussed for heat transfer equipment miniaturization with the same heat transfer capacity and pump power. The optimal design calculations of structure sizes of flat tubes were carried out under a certain heat transfer condition. Compared with the circular tube, the results indicate that the volume of heat exchange tube is decreased by 46.4%. The optimization effect of flat tube is obvious and it can provide some references for engineering design.

Key words:flat tube; heat transfer enhancement; optimization design