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Development and Validation of a Mechanism for Flame Propagation in R-32/Air Mixtures



Donald R. Burgess Jr., Jeffrey A. Manion, Robert R. Burrell, Valeri I. Babushok, Michael Hegetschweiler, Gregory T. Linteris


A mechanism for the combustion of the refrigerant R-32 (CH2F2) in air mixtures was developed and validated through comparisons with measured flame speeds for a range of equivalence ratios (0.9 to 1.4) and pressures (1 to 3 bar) using a constant-volume spherical flame method. Premixed flame calculations were performed and analyzed to identify primary species and reactions contributing to flame speeds and combustion. We found that there were only three HFC reactions that contributed significantly to flame speeds. Their rate constants were optimized within uncertainty limits and the model showed excellent agreement (<3 %) with measured flames speeds.
Proceedings Title
Combustion Institute Eastern States Spring Meeting
Conference Dates
March 4-7, 2018
Conference Location
State College, PA, US


Chemical kinetics, Refrigerant flammability, Burning velocity, Hydrofluorocarbons


Burgess Jr., D. , Manion, J. , Burrell, R. , Babushok, V. , Hegetschweiler, M. and Linteris, G. (2018), Development and Validation of a Mechanism for Flame Propagation in R-32/Air Mixtures, Combustion Institute Eastern States Spring Meeting, State College, PA, US, [online], (Accessed April 16, 2024)
Created March 6, 2018, Updated April 11, 2022