喷射器结构改进及制冷应用的研究进展  

Research progress of ejector geometric optimization and refrigeration applications

作　　者：张晓林[1] 邓帅[1] 赵力[1] 苏文[1] 许伟聪[1] 杨彬[1] ZHANG Xiao-lin;DENG Shuai;ZHAO Li;SU Wen;XU Wei-cong;YANG Bin(Key Laboratory of Efficient Utilization of Low and Medium Grade Energy,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津大学中低温热能高效利用教育部重点实验室,天津300072

出　　处：《高校化学工程学报》2020年第2期277-289,共13页Journal of Chemical Engineering of Chinese Universities

基　　金：国家重点研发计划(2018YFB0905103);天津市人才发展特殊支持计划高层次创新创业团队项目;国家海洋经济创新发展示范项目(BHSF2017-19);国家自然科学基金(51776138)。

摘　　要：为了使喷射器适应更广的运行范围、获得更佳的引射率或升压比,从结构改进入手提升喷射器性能在近年来成为研究热点。文章通过文献综述的方法,对现有喷射器结构改进在设计、模拟和制冷应用层面的研究进展进行了梳理。首先,对喷射器结构改进设计中应用的数学模型进行了归纳;其后从几何特征和流变特性两方面,对结构改进后的喷射器模拟研究进行了汇总,梳理了喷嘴出口位置、喷针位置和混合室长度等结构要素对喷射器性能的影响;最后,对结构改进喷射器应用于制冷领域中的代表性实验研究也进行了回顾。文章对喷射器结构改进技术发展的回顾与展望可服务该领域内工程实践的深化。In order to make ejectors perform well in a wider operating range and have better entrainment ratios and pressure lift ratios, geometric optimization becomes a research hotspot in recent years. In this review, current studies on designing methods, simulation and refrigeration application of geometric optimization were reviewed, and mathematical models of geometric optimization were summarized. Simulation studies on geometric optimization were also reviewed regarding geometric and flow characteristics. Effects of nozzle outlet position, ejector spindle position and mixing chamber length on ejector performance were clarified. Finally, typical studies of ejectors with optimized geometry were presented. This review can be referred for ejector application in engineering.

关 键 词：喷射器 结构优化 可调节 喷射制冷 

分 类 号：TB658[一般工业技术—制冷工程] TK05[动力工程及工程热物理]