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

Linteris, Gregory; Babushok, Valeri

doi:10.1016/j.jfluchem.2019.05.002

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

Journal Article · Sat May 04 00:00:00 EDT 2019 · Journal of Fluorine Chemistry

DOI:https://doi.org/10.1016/j.jfluchem.2019.05.002· OSTI ID:1799313

Linteris, Gregory ^[1]; Babushok, Valeri ^[2]

National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); OSTI
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)

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.

View Accepted Manuscript (DOE)

Research Organization:: National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office

Grant/Contract Number:: EE0007615

OSTI ID:: 1799313

Journal Information:: Journal of Fluorine Chemistry, Journal Name: Journal of Fluorine Chemistry Vol. 230; ISSN 0022-1139

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
burning velocity
flame speed
fluorocarbon flammability
low-GWP refrigerants
refrigerant flammability

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

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References (21)

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