Kim, D.
, Babushok, V.
, Hegetschweiler, M.
and Linteris, G.
(2023),
Flame Propagation in Blends of R152a, R134a, and R-1234yf with Air, Combustion Science and Technology, [online], https://doi.org/10.1080/00102202.2023.2249591, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=935390
(Accessed April 28, 2024)
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Flame Propagation in Blends of R152a, R134a, and R-1234yf with Air
Published
Author(s)
Dennis Kim, , Michael Hegetschweiler,
Abstract
Laminar burning velocity measurements have been made using a constant volume experiment with dry air and the refrigerant R152a (CH3CHF2), pure and blended with R134a (CH2FCF3), or R1234yf (CF3CFCH2). The resulting burning velocity data deduced from the pressure rise in the chamber are presented for a range of fuel air equivalence ratio and loading of the less flammable refrigerant, for unburned gases at 298 K and 101 kPa as well as at 375 K and 253 kPa. For comparison, the 1D, planar laminar burning velocity was numerically simulated using a recently developed kinetic mechanism that includes a wide range of refrigerants with air. The predicted burning velocities agree reasonably well with the experimental values, and the numerical results are used to understand the kinetic mechanism of the reaction of the refrigerants. Uncertainties in the experimental data from radiation heat losses as well as extrapolation to ambient conditions are explored.Citation
Combustion Science and Technology
Pub Type
Journals
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Keywords
refrigerant flammability, R152a, R134a, R1234yf, laminar flame speed, burning velocity
Citation
Created September 13, 2023, Updated September 26, 2023