为了确定不同形状和级数组合的换热器对烟气消白系统传热性能的影响,采用了空气焓差法测试换热器的综合性能,并结合Solidworks Flow Simulation软件进行换热性能模拟分析。计算了换热器的制冷能力、温度和压力分布,并将模拟结果与实验测试结果进行了比较,发现其误差均在15%以内。实验和模拟结果表明：在相同条件下,波纹形换热器的制冷性能优于蜂窝形换热器,提高了8.8%～39.5%。此外,波纹形换热器的空气侧出口温度和压降分别降低了1.2%～4.8%和15.1%～7.7%。随着级数组合的增加,对流传热的影响使得空气侧出口温度明显降低,特别是波纹形换热器的制冷能力上升更加明显。本研究为烟气消白系统中换热器的工程应用和设计提供了一定的参考价值。

In order to assess the impact of different shapes and series combinations on the heat exchange performance of the heat exchanger within the white smoke reduction system, comprehensive performance testing of the heat exchanger was conducted using the air enthalpy difference method. Additionally, SolidWorks Flow Simulation software was utilized to analyze the heat exchange performance of the heat exchanger, addressing parameters such as cooling capacity, temperature, and pressure distribution. The simulation results were then compared with experimental test data, yielding an error margin within 15%. The experimental and simulation findings revealed that, under identical conditions, the wave-shaped heat exchanger exhibited superior cooling performance compared to the honeycomb-shaped heat exchanger, displaying an increase ranging from 8.8% to 39.5%. Moreover, the outlet temperature and pressure drop on the air side of the heat exchanger decreased by 1.2% to 4.8% and 7.7% to 15.1%, respectively. Furthermore, with the escalation of stages in the combination, the outlet temperature on the air side experienced a significant decrease due to convective heat transfer influences, leading to a more pronounced increase in cooling capacity for the wave-shaped heat exchanger. The outcomes of this study provide valuable insights for the engineering application and design of heat exchangers within white smoke reduction systems.

TK172

国家自然科学基金资助项目（52075047）、博士科研启动基金(2019Y39)。