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针对强化气侧换热是提高换热器效能的关键,设计建立了研究涡流发生器强化换热性能和压降特性的实验测试系统。通过对涡流发生器强化换热机理及压降特性的分析,建立了研究不同结构和尺寸的涡流发生器的实验装置,并详细介绍了实验方案和程序。实验采取的是气-水逆流换热装置,空气、热水入口温度在基本保持不变的情况下,测量换热板壁面温度、气水进出口温度、水流量、风速和气侧压降,研究不同工况下涡流发生器的强化换热性能和压降特性。可选取不同形状的涡流发生器进行对比性实验和优化实验,以更好地评价涡流发生器的性能,为涡流发生器的模型优化和改进提供实验基础。
In order to strengthen the gas-side heat transfer is the key to improve the performance of the heat exchanger, an experimental test system was established to study the enhancement of the heat transfer performance and pressure drop characteristics of the vortex generator. By analyzing the mechanism of heat transfer enhancement and pressure drop of vortex generator, an experimental device for vortex generator with different structures and sizes was established, and the experimental scheme and program were introduced in detail. The gas-water countercurrent heat exchange device was adopted in the experiment. The inlet temperature, water flow rate, wind speed and gas pressure drop of the heat exchange plate were measured under the condition that the inlet temperature of air and hot water remained basically unchanged Enhanced heat transfer and pressure drop characteristics of vortex generators under different operating conditions. Different shapes of eddy current generator can be selected for comparative experiments and optimization experiments to better evaluate the performance of the eddy current generator and provide experimental basis for model optimization and improvement of the eddy current generator.