Explosion risk analysis of R290 leakage into a limited external space

Li, Yalun; Yang, Jia‐Liang; Wu, Xilei; Zhou, Peixu; Liu, Ying; Han, Xiaohong

doi:10.1016/j.applthermaleng.2023.120122

Cited by 11 publications

(2 citation statements)

References 18 publications

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“…Ning et al [16] investigated the leakage hazard control of an R290 split-type household air conditioner with 5 mm diameter finned-tube heat exchangers under off-mode through concentration measurement and ignition experiment. Recently, Li et al [17] developed a numerical model of refrigerant leakage to assess the explosion risk analysis of R-290 leakage into a limited external space. Although R-290 is becoming a popular choice for commercial refrigeration device such as vending machines and ice cream machines, there are not many studies focusing on commercial refrigeration devices.…”

Section: Introductionmentioning

confidence: 99%

A Modeling-Based Flammable Risk Treatment of Refrigerant Leakage from a Commercial R-290 Refrigeration Machine

Zhang,

Sharma,

Cheekatamarla

2024

Inventions

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Because of serious concerns about global warming, manufacturers have started phasing out high global warming potential (GWP) refrigerants in commercial refrigeration equipment (e.g., R-134a). As a potential replacement, propane (R-290) is an environmentally friendly refrigerant for commercial refrigeration equipment because its GWP is only three. However, propane is flammable and is therefore classified as a Class A3 refrigerant per ASHRAE Standards, so safety is a very important consideration when propane-based equipment is designed and deployed in buildings. In the event of a refrigerant leak, flammability of the refrigerant depends on the refrigerant’s local concentration, which is highly affected by the indoor air environment, including temperature and air flow. In this study, a ventilation system attached to a commercial R-290 refrigeration device was designed to eliminate the flammability risk. Moreover, a computational fluid dynamics (CFD) model was developed to investigate the refrigerant leak, thereby evaluating effects of the ventilation system. The CFD model can visualize the flammable zones owing to the leak.

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Section: Introductionmentioning

confidence: 99%

A Modeling-Based Flammable Risk Treatment of Refrigerant Leakage from a Commercial R-290 Refrigeration Machine

Zhang,

Sharma,

Cheekatamarla

2024

Inventions

View full text Add to dashboard Cite

show abstract

“…The recent work in literature focuses on addressing the flammability of hydrocarbon refrigerants used in refrigerators [ 4 , [6] , [7] , [8] ]. The incorporation of gas leak fire alarms, detectors, ultrasonic sensors, and ventilator devices in refrigerator systems can be cumbersome and expensive to manage flammability [ 9 ].…”

Section: Introductionmentioning

confidence: 99%