基于喷雾冷却的壳管换热器换热特性研究  

Study on Heat Transfer Characteristics of Tube-shell Heat Exchanger Based on Spray Cooling

作　　者：王美钧 赵守政 李建辉 朱宗升[1] Wang Meijun;Zhao Shouzheng;Li Jianhui;Zhu Zongsheng(Tianjin University of Commerce,Tianjin,300134,China)

机构地区：[1]天津商业大学,天津300134

出　　处：《冷藏技术》2025年第1期32-39,共8页Journal of Refrigeration Technology

基　　金：银川市科技计划项目(2024GXHZC007)。

摘　　要：本文将喷雾冷却技术与管壳式换热器相结合,通过数值模拟和实验揭示喷雾参数对换热特性的影响规律。模拟过程设定换热管内进水温度为18℃,而壳体内制冷剂蒸发温度为12℃,制冷剂采用R32。分析单喷嘴喷雾模式下液膜动态行为、换热机理和换热特性。单喷嘴模式下,伴随喷雾速度增加,第一排换热管面积平均热流密度从3124 W/m^(2)(5 m/s)提升至13721 W/m^(2)(15 m/s)。实验结果也证明,喷雾冷却可大幅提高壳管换热器的有效热流密度,在喷雾压力为0.9 MPa时,喷射区内热流密度达到11560 W/m^(2)。In this paper,spray cooling technology is combined with shell and tube heat exchanger,and the influence of spray parameters on heat transfer characteristics is revealed through numerical simulation and experiments.In the simulation process,the inlet water temperature in the heat exchange tube is set at 18℃,while the evaporation temperature of the refrigerant in the shell is set at 12℃,and R32 is used as the refrigerant.The dynamic behavior,heat transfer mechanism and heat transfer characteristics of liquid film in single nozzle spray mode were analyzed.In the single nozzle mode,with the increase of spray speed,the average heat flux density of the first row of heat exchange tubes increased from 3124 W/m^(2)(5 m/s)to 13721 W/m^(2)(15 m/s).The experimental results also show that spray cooling can significantly improve the effective heat flux density of shell and tube heat exchanger.When the spray pressure is 0.9 MPa,the heat flux density in the spray zone reaches 11560 W/m^(2).

关 键 词：喷雾冷却 换热器 热流密度 喷雾速度 

分 类 号：TK172[动力工程及工程热物理—热能工程]