Effects of Geometric Parameter on Performance of Ejector and Two-phase Ejector Refrigeration System

Pei Wenwei; Guo Xianmin; Wang Shanyun; Guo Xinwei

doi:10.3969/j.issn.0253-4339.2013.01.065

您当前的位置：

首页 >

文章列表页 >

Effects of Geometric Parameter on Performance of Ejector and Two-phase Ejector Refrigeration System

更新时间：2024-07-18

- Effects of Geometric Parameter on Performance of Ejector and Two-phase Ejector Refrigeration System
- Journal of Refrigeration Vol. 34, Issue 1, (2013)
- 作者机构：
  
  天津商业大学天津市制冷技术重点实验室
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2013.01.065
  CLC：
- Published：2013
- 稿件说明：
移动端阅览
Pei Wenwei, Guo Xianmin, Wang Shanyun, et al. Effects of Geometric Parameter on Performance of Ejector and Two-phase Ejector Refrigeration System[J]. Journal of refrigeration, 2013, 34(1).
DOI：

Pei Wenwei, Guo Xianmin, Wang Shanyun, et al. Effects of Geometric Parameter on Performance of Ejector and Two-phase Ejector Refrigeration System[J]. Journal of refrigeration, 2013, 34(1). DOI： 10.3969/j.issn.0253-4339.2013.01.065.

摘要

用两相流引射器代替膨胀阀，可回收两相流引射制冷循?环中高压工质的压力能，提高制冷系统效率。对以R134a为工质的两相流引射制冷系统性能进行了实验研究，分析了喷嘴喉部直径和混合室直径对R134a两相流引射器及引射制冷系统性能的影响。实验结果表明，在固定工况条件下，存在使引射比达到最大的最佳喷嘴喉部直径和混合室直径组合。在蒸发温度为3℃、冷凝温度为55℃的工况下，当喷嘴喉部直径为2.0mm、混合室直径为16mm时引射器的引射比最大。在固定工况条件下，使引射比达到最大值的喷嘴喉部直径和混合室直径的最佳组合与使系统COP达到最大值的几何参数组合并不一致。这可能是由于在引射器中产生了激波等因素引起的，其中机理尚需要进行更深入的研究。

Abstract

In order to increase the coefficient of performance (COP) of the refrigeration system

the expansion valve is replaced by a two-phase ejector in the two-phase ejector refrigeration cycle to recover the potential energy of the high pressure refrigerant. The performance of two-phase ejector refrigeration system with refrigerant R134a as working fluid is experimentally investigated. The effects of the throat diameter of the nozzle and the diameter of the mixing chamber on the performance of the ejector and the two-phase ejector refrigeration cycle system were analyzed. The experimental results indicate that there is an optimal combination of the nozzle throat diameter and the mixing chamber diameter to maximize the entrainment ratio under a fixed working condition. The entrainment ratio of the ejector reaches to the maximum value with the throat diameter of 2.0mm and the mixing chamber diameter of 16mm under the conditions of 3℃ evaporating temperature and 55℃ condensing temperature. Under a fixed working condition

the optimal combination of the nozzle throat diameter and the mixing chamber diameter for maximum of the entrainment ratio is not consistent with the one for maximum of the COP of the refrigeration system. This may be caused by the shocks in the ejector

which should be investigated deeply.

关键词

Keywords

references

Views

2039

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Experimental investigation on performances of capillary mat heat exchangers in a thermal energy tunnel

Study on Micro-vacuum Storage Facility and Fresh-keeping of Laiyang Pear

Optimization of Heat Pump Drying Process of Tilapia Fillet by Secondary Multiple Regression Analytical Method

Experimental Study on Parallel-flow Condensers Applied on Food Refrigerated Display Cabinet

Modeling and Optimization of Air Source Heat Pump Water Heaters Using Wrap-around Micro-channel Condenser

Related Author

王永艳

周国兵

刘军

王富强

乔国刚

黄辉

Liu Jinping

Zou Yongsheng

Related Institution

华北电力大学

北京建筑大学土木与交通工程学院

北京市政建设集团有限责任公司第三工程处

北京市政建设集团有限责任公司

School of Electric Power, South China University of Technology

Address：10/F, Yindu Mansion, 67 Fucheng Road, Haidian Dist, Beijing, China Postal code：100142
Tel：010-68711412 Email：editor@car.org.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰