Experimental and numerical simulation analysis of R-290 air conditioner leak

被引：24

作者：

Hu Maojuan ^{[1
]}

Li Jinbo ^{[2
]}

Liu Zhe ^{[1
]}

Li Tingxun ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Engn, Xingang West Rd 135, Guangzhou 510275, Guangdong, Peoples R China

[2] Midea Grp, 6 Midea Ave, Shunde 528311, Peoples R China

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2018年 / 90卷

关键词：

R-290; Air conditioner; Refrigerant; Leak; RISK-ASSESSMENT MODEL; FLAMMABILITY HAZARDS; PART I; REFRIGERANT; INDOOR; ROOMS;

D O I：

10.1016/j.ijrefrig.2018.03.010

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Different mass R-290 (propane) leaked into the room from the inside and outside of a split type air conditioner indoor unit, and the refrigerant concentration was measured by infrared gas sensors. A CFD mode for RAC indoor unit including heat exchanger and fan was developed and verified by the test data. Through experiment and simulation, the dispersion characteristics of the refrigerant under different conditions were studied. The influence of installation height, leak point location, airflow rate and angle were tested and analyzed. Using velocity and concentration contours, jet camber resulted from leaked refrigerant and Coanda flow were illustrated clearly. The airflow volume at speed greater than 0.2 m/s could be applied directly to assess the effect of airflow on refrigerant mixing and diffusion. (C) 2018 Elsevier Ltd and IIR. All rights reserved.

引用

页码：163 / 173

页数：11

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