Laminar burning velocity predictions for C1 and C2 hydrofluorocarbon refrigerants with air

被引：29

作者：

Linteris, Gregory ^{[1
]}

Babushok, Valeri ^{[1
]}

机构：

[1] NIST, Engn Lab, Gaithersburg, MD 20899 USA

来源：

JOURNAL OF FLUORINE CHEMISTRY | 2020年 / 230卷

关键词：

Refrigerant flammability; Burning velocity; Low-GWP refrigerants; Fluorocarbon flammability; Flame speed; INTERMEDIATE SPECIES PROFILES; PRESSURE PREMIXED FLAMES; INHIBITION; RADIATION; CF3BR;

D O I：

10.1016/j.jfluchem.2019.05.002

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Due to their high global warming potentials, many existing working fluids are being phased out. Their replacements will often be slightly flammable, and the burning velocity of refrigerant-air mixtures is a metric for ranking their flammability. To allow estimates of the flammability of new blends of agents, predictive tools for the burning velocity are being developed and require a kinetic mechanism. A hydrofluorocarbon (HFC) mechanism was developed 20 years ago to describe hydrocarbon-air flames with added trace amounts of hydrofluorocarbon fire retardants. In the present work, the mechanism has been updated slightly to include new HFC compounds, new rate data. The modified mechanism is used to predict steady, planar, 1D, unstretched burning velocities for mixtures of air with one- and two-carbon saturated HFC compounds R41 (CH3F), R32 (CH2F2), R161 (C2F5H), R152 (CH2F-CH2F), R152a (CH3-CHF2), R143 (CH2F-CHF2), R143a (CH3-CF3), R134 (CHF2-CHF2), and R134a (CH2F-CF3), for which existing experimental data were available.

引用

页数：6

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