Optimization of Air Flow Pattern for Leakage of Ammonia Gas in a Refrigerator Room

Zhang Qianru; Zhang Xu; Ye Wei; Zhao Wenxuan; Zhi Chengqiang; Huang Yixiang; Ma Jin

doi:10.3969/j.issn.0253-4339.2021.01.036

您当前的位置：

首页 >

文章列表页 >

Optimization of Air Flow Pattern for Leakage of Ammonia Gas in a Refrigerator Room

更新时间：2024-07-18

- Optimization of Air Flow Pattern for Leakage of Ammonia Gas in a Refrigerator Room
- Journal of Refrigeration Issue 1, (2021)
- 作者机构：
  
  1. 同济大学机械与能源工程学院
  2. 同济大学工程结构性能演化与控制教育部重点实验室
  3. 华商国际工程有限公司
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2021.01.036
  CLC：
- Published：2021
- 稿件说明：
移动端阅览
Zhang Qianru, Zhang Xu, Ye Wei, et al. Optimization of Air Flow Pattern for Leakage of Ammonia Gas in a Refrigerator Room[J]. Journal of refrigeration, 2021, (1).
DOI：

Zhang Qianru, Zhang Xu, Ye Wei, et al. Optimization of Air Flow Pattern for Leakage of Ammonia Gas in a Refrigerator Room[J]. Journal of refrigeration, 2021, (1). DOI： 10.3969/j.issn.0253-4339.2021.01.036.

摘要

本文针对氨制冷压缩机低压吸气管道破裂后氨制冷剂泄漏的场景，采用计算流体力学（CFD）的方法对不同气流组织下事故通风过程进行了数值模拟，对比了不同气流组织下的事故通风有效性。根据计算结果，侧墙排风口上沿距顶在0~0.2 m范围内对污染物排除几乎没有影响。在氨制冷机房两端有门，中部有上、下两排窗的情况下，对于通风120 s后NH3质量分数超过4.2×10-4区域的体积，相比于开全部窗的工况，开全部门工况高出133.0%，开全部窗和门工况该区域体积高出60.7%，开上排窗的工况该区域体积降低98.1%，开下排窗的工况室内该区域体积高出180.3%。对于通风120 s后的室内NH3总质量，相比于开全部窗的工况，开全部门工况高出40.6%，开全部窗和门工况高出12.7%，开上排窗的工况降低24.1%，开下排窗的工况高出44.4%。

Abstract

To exhaust the ammonia gas released after the rupture of a low-pressure suction pipe of an ammonia refrigeration compressor

a computational fluid dynamics (CFD) method was used to numerically calculate the accident ventilation process and compare the emergency ventilation effectiveness under different airflow patterns in this study. According to the calculation results

the upper edge of the exhaust vent in the side wall has little effect on the removal of pollutants within the range of 0–0.2 m. When there are doors at both ends of the ammonia refrigeration plant

and there are upper and lower rows of windows in the middle

the volume of the area where the NH3 mass fraction exceeds 4.2 × 10-4 after 120 s of emergency ventilation is: 133.0% higher with all doors open

60.7% higher with all doors and windows open

98.1% lower with the upper row of windows open

and 180.3% higher with the lower row of windows open respectively than that with all open windows. The total indoor NH3 mass after 120 s of ventilation is 40.6% higher with all doors open

12.7% higher with all windows and doors open

24.1% lower when the upper row of windows are open

and 44.4% higher when the lower row of windows are opened than that with all windows open.

关键词

Keywords

references

Views

1833

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Numerical Simulation of the Ammonia-leakage Diffusion in Ammonia Refrigeration Room

Diffusion Distribution Characteristics and Flammable Areas of Refrigerants Encountering Obstacles in Confined Spaces

Leakage Components and Causes Analysis of Split Air-conditioning System Based on Statistical Data

Related Author

Dong Xiaoqiang

Li Kun

Liu Yuting

Li Junming

Han Xiaohong

Li Yalun

Zhou Peixu

Ye Gongran

Related Institution

Internal Trade Engineering Design and Research Institute

State Key Laboratory of National Nuclear and Biological Disaster Protection

Department of Thermal Engineering, Tsinghua University

State Key Lab for Fluorine Greenhouse Gases Replacement and Control Treatment, Zhejiang Research Institute of Chemical Industry

Key Laboratory of Refrigeration and Cryogenic Technology of Zhejiang Province, Institute of Refrigeration and Cryogenics, Zhejiang University

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