Distribution Characteristics and Optimization on Parallel Flow Microchannel Heat Exchanger

Du Lin; Zhou Liyang; Chen Qi; Wang Shuhua; Wang Binhui; Gao Ruqi; Chen Guangming; Tang Liming

doi:10.3969/j.issn.0253-4339.2021.05.111

您当前的位置：

首页 >

文章列表页 >

Distribution Characteristics and Optimization on Parallel Flow Microchannel Heat Exchanger

更新时间：2024-07-18

- Distribution Characteristics and Optimization on Parallel Flow Microchannel Heat Exchanger
- Journal of Refrigeration Vol. 42, Issue 5, (2021)
- 作者机构：
  
  1. 浙江大学能源工程学院
  2. 巨化集团有限公司
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2021.05.111
  CLC：
- Published：01 January 2021
- 稿件说明：
移动端阅览
Du Lin, Zhou Liyang, Chen Qi, et al. Distribution Characteristics and Optimization on Parallel Flow Microchannel Heat Exchanger[J]. Journal of refrigeration, 2021, 42(5).
DOI：

Du Lin, Zhou Liyang, Chen Qi, et al. Distribution Characteristics and Optimization on Parallel Flow Microchannel Heat Exchanger[J]. Journal of refrigeration, 2021, 42(5). DOI： 10.3969/j.issn.0253-4339.2021.05.111.

摘要

微通道平行流换热器内制冷剂分配不均是限制其进一步推广应用的原因之一，当微通道平行流换热器做蒸发器时，制冷剂在换热器入口为气液两相状态，会加剧其分布不均匀性。本文以气液两相R134a制冷剂为工质，提出一种数值仿真模型，并利用前人实验数据验证了模型可靠性。提出通过改变不同扁管在集管内突出深度以改善制冷剂分配特性的4种方案，利用数值仿真模型进行计算，当质量流速为100 kg/(m2?s)，制冷剂干度为0.4时，发现通过改变不同扁管在集管内的突出深度可以使液相制冷剂分配特性改善29.4%~52.4%。

Abstract

The uneven distribution of refrigerants in parallel flow microchannel heat exchangers is one of the reasons that limit their further promotion and application. When the parallel flow microchannel heat exchanger is used as an evaporator

the refrigerant at the inlet of the evaporator is in a vapor-liquid two-phase state

which causes an uneven distribution of vapor and liquid refrigerant in the evaporator. In this study

a two-phase R134a refrigerant was used as the working fluid

and a numerical simulation model which was verified by previous experimental data was proposed. Four schemes to improve the refrigerant distribution characteristics by changing the protrusion depth of different flat tubes are proposed. Numerical simulation models were used for the calculation. When the mass flow rate is 100 kg/(m2?s) and the refrigerant quality is 0.4

it is found by changing the protrusion depth of different flat tubes in the header

the liquid phase refrigerant distribution characteristics can be improved by 29.4%–52.4%.

关键词

Keywords

references

Views

1506

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Investigation of Flow and Heat Transfer Characteristics for Fins Compound with Cavities in Microchannels

Research Progress in Supercritical CO2 Microchannel Heat Exchangers

Experimental Study on Outdoor Heat Exchanger Frosting Characteristics of a Heat Pump Air-conditioning System for Electric Vehicles

CFD Simulation and Experimental Study on Temperature Field Uniformity in Environmental Test Chamber

Related Author

Huang Binghuan

Mi Chuang

Li Kui

Gong Liang

Han Zengxiao

Guo Jiangfeng

Huai Xiulan

Huang Junjie

Related Institution

College of New Energy, China University of Petroleum (East China)

School of Computer Science, Northwestern Polytechnical University

Xi'an Institute of Microelectronics Technology

Nanjing Institute of Future Energy System

Institute of Engineering Thermophysics, Chinese Academy of Sciences

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