室外造雪机用核子器雾化性能规律实验研究  

Experimental Study on Atomizing Performance of Nucleator Nozzle for Outdoor Snow Makers

作　　者：郝亚辉 吴海峰 张博文 刘佳维 张华[2] 王瑞祥[1] Hao Yahui;Wu Haifeng;Zhang Bowen;Liu Jiawei;Zhang Hua;Wang Ruixiang(Beijing Engineering Research Centre of Sustainable Energy and Buildings,Beijing University of Civil Engineering and Architecture,Beijing,100044,China;School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai,200093,China)

机构地区：[1]北京建筑大学北京市建筑能源综合高效综合利用工程技术研究中心,北京100044 [2]上海理工大学能源与动力工程学院,上海200093

出　　处：《制冷学报》2023年第1期88-93,共6页Journal of Refrigeration

基　　金：国家重点研发计划(2020YFF0303903)资助项目。

摘　　要：为研究国内室外造雪机组重要雾化器件核子器的雾化规律,以空气和水为介质,利用高速摄像机和激光粒度分析仪研究了国产KBJD-1型号核子器的索特平均直径、雾化流量和雾化锥角等性能指标的变化规律。结果表明:索特平均直径随供气压力的增加呈指数减小,随供水压力的增加呈指数增加,且随着气液压力比的增大,粒径的变化率逐渐降低;在相同供水压力1.0 MPa、不同供气压力0.3~0.8 MPa的实验工况下,雾化流量与供气压力为负近似线性相关;雾化锥角随着供气压力的增大先增大后减小,在供气压力达到约0.55 MPa时,雾化锥角达到最大值。This study investigates the atomizing law of the nucleator nozzles,which are an important atomizing device for domestic outdoor snow-making units.Air and water are used as the medium,and the Sauter mean diameter,atomization flux,and spray angle of the domestic KBJD-1 nucleator nozzle are studied by a high-speed camera and laser particle size analyzer.The results show that the Sauter mean diameter decreases exponentially with an increase in air supply pressure but increases exponentially with an increase in water supply pressure.Moreover,the rate of change of the particle size gradually decreases with an increase in the gas-liquid pressure ratio.At the same experimental condition of water supply pressure at 1.0 MPa,when varying the air supply pressure from 0.3 MPa to 0.8 MPa,the atomization flow rate approximately decreases linearly with the air supply pressure.The spray angle first increases and then decreases with an increase in the air supply pressure.When the air supply pressure reaches 0.55 MPa,the spray angle reaches its maximum value.

关 键 词：室外造雪机 雾化性能 索特平均直径 雾化锥角 

分 类 号：TB611[一般工业技术—制冷工程] P481[天文地球—大气科学及气象学] TS952.63[轻工技术与工程]