混合流蒸发式冷凝器中鼓泡板片喷淋侧热质传递研究  

Air-side Heat and Mass Transfer of Bubble Plate in Mixed Flow Evaporative Condenser

作　　者：周庆权 张坤龙 潘旭光 刘婧楠[1] 高明[1] 陈永保[1] 彭昕 章立新[1] Zhou Qingquan;Zhang Kunlong;Pan Xuguang;Liu Jingnan;Gao Ming;Chen Yongbao;Peng Xin;Zhang Lixin(Shanghai Key Laboratory of Multiphase Flow and Heat Transfer of Power Engineering,School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai,200093,China;Zhejiang Sanxin Tech-nology Co.,Ltd.,Shaoxing,312521,China;Sinochem Cangzhou Cooling Technology Co.,Ltd.,Cangzhou,061000,China)

机构地区：[1]上海理工大学能源与动力工程学院上海市动力工程多相流动与传热重点实验室,上海200093 [2]浙江三新科技有限公司,绍兴312521 [3]中化工程沧州冷却技术有限公司,沧州061000

出　　处：《制冷学报》2022年第4期151-157,共7页Journal of Refrigeration

基　　金：国家自然科学基金(51976127)资助项目。

摘　　要：本文采用控制变量法对混合流状态下的鼓泡式换热板片喷淋水侧的换热性能进行实验研究,分析不同参数对鼓泡板片喷淋水侧热质传递以及阻力性能的影响。结果表明:适当增加喷淋水量可以改善鼓泡板片表面水膜分布的均匀性,提升鼓泡板片的换热效果,建议不低于0.347 kg/(s·m);板片间距从20 mm增至30 mm时,板间空气的进出口压损下降较为显著,随着间距的进一步增大,空气的流通截面积并不会对板间空气的进出口压损产生很大影响;综合考虑,喷淋侧板间距为25 mm、平均截面风速为6.66 m/s时兼顾了压损影响和换热性能,为最优方案;相较于正位布置,板片错位布置更合理,换热性能更好,换热效果是正位布置的1.1~1.4倍。In this study,the air-side heat transfer performance of a mixed flow bubble plate heat exchange is investigated.The control variable method is used to determine factors that affect the heat transfer performance and water flow resistance of the bubble plate.The results show that an appropriate increase in the spray water flow rate can improve the uniformity of the water film distribution on the surface of the bubble plate such that the heat transfer can be improved;the recommended value for the spray water mass flux is no less than 0.347 kg/(s·m).When the plate spacing is increased from 20 to 30 mm,the air-side pressure drop decreases significantly.As the plate spacing further increases,it has a trivial effect on the air-side pressure drop.A 25 mm plate spacing and an average cross-sectional wind speed of 6.66 m/s are optimal parameters in terms of the air-side pressure drop and heat transfer performance.Compared with the anterior position arrangement,the plate dislocation arrangement is more reasonable and affords better heat exchange performance.Results show that the heat exchange effect of the dislocation arrangement is 1.1-1.4 times that of the anterior position arrangement.

关 键 词：蒸发式冷凝器 鼓泡板片 喷淋测流道 热质传递 

分 类 号：TB611[一般工业技术—制冷工程] TK172[动力工程及工程热物理—热能工程]