史海路¹,刘华东^1,2,魏新利^1,2,李春何¹,张羽翔¹

• 1:郑州大学 化工与能源学院，河南 郑州 450001
• 2:热能系统节能技术与装备教育部工程技术研究中心，河南 郑州 450001

摘要(Abstract)：

采用自行设计加工的变喷嘴距喷射器，在双蒸发压缩/喷射制冷实验平台上，研究了喷嘴距对喷射器和系统性能的影响规律，并与传统压缩制冷循环的性能进行对比。研究结果表明：喷射器存在一个最优喷嘴距能使引射系数（μ）、升压比（PLR）、系统性能系数（COP）和压缩比（CR）均达到最大值；在所研究的工况范围内，最优喷嘴距为-5 mm，与喷嘴距为+15 mm相比，μ最大可提高24.56%，PLR最大可提高7.34%，COP最大可提高11.5%，CR最大降低了3.47%；在不同冷却水进水温度和冷媒水进水温度下，双蒸发压缩/喷射制冷循环比传统压缩制冷循环性能更优，COP最大可分别提高33.97%和24.73%。研究结果可为双蒸发压缩/喷射制冷系统喷射器设计和系统运行参数优化提供参考。

关键词(KeyWords)： 喷嘴距;喷射器;双蒸发压缩/喷射制冷;系统性能

Abstract:

Keywords:

基金项目(Foundation): 河南省重点科技攻关项目（142102210072）；河南省高等学校重点科研项目计划（16A470002）。

作者(Author): 史海路¹,刘华东^1,2,魏新利^1,2,李春何¹,张羽翔¹

DOI: 10.3969/j.issn.1003-9015.2019.02.009

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