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Flame Propagation in Mixtures of Moist O2/N2 Oxidizer with Fluorinated Propene Refrigerants (CF3CFCH2, CF3CHCHF, and CF3CHCH2)

Published

Author(s)

Gregory T. Linteris, Valeri I. Babushok, Michael Hegetschweiler

Abstract

A preliminary kinetic model is presented for the combustion of the refrigerants: 2,3,3,3-tetrafluoropropene (R-1234yf), 1,3,3,3-tetrafluoropropene (R-1234ze(E)) and 3,3,3-trifluoropropene (R-1243zf). The kinetic model is based on GRI-Mech-3.0 and previously developed models for the inhibition of hydrocarbon flames by 2-bromo-3,3,3-trifluoropropene (2-BTP), and C1-C2 hydrofluorocarbons. The model includes 1003 reactions and 105 species. Thermodynamic equilibrium calculations indicate a maximum combustion temperature of 2079 K, 2068 K and 2289 K for R-1234yf, R-1234ze(E) and R-1243zf, respectively, in air for standard conditions: 298 K, 101 kPa. Calculations of the 1D, steady, planar laminar burning velocity for these refrigerants with air or oxygen-enriched air (with 1.4 % water vapor in the oxidizer) indicate reasonable agreement with experimental data from the literature for burning velocities above 15 cm/s. Increasing oxygen mole fraction in the oxidizer shifts the maximum adiabatic temperature to the leaner conditions for R-1234yf and R-1234ze(E), but to richer conditions for R-1234zf.
Proceedings Title
Proceedings of the 11th U. S. National Combustion Meeting
Conference Dates
March 24-27, 2019
Conference Location
Pasadena, CA, US
Conference Title
11th U. S. National Combustion Meeting

Keywords

Refrigerant flammability, Burning velocity, Low-GWP refrigerants, kinetic model, Hydrofluorocarbons

Citation

Linteris, G. , Babushok, V. and Hegetschweiler, M. (2023), Flame Propagation in Mixtures of Moist O2/N2 Oxidizer with Fluorinated Propene Refrigerants (CF3CFCH2, CF3CHCHF, and CF3CHCH2), Proceedings of the 11th U. S. National Combustion Meeting, Pasadena, CA, US (Accessed June 14, 2024)

Issues

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Created September 25, 2023, Updated September 27, 2023