史海路,刘华东,魏新利,李春何,张羽翔

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

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,刘华东,魏新利,李春何,张羽翔

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