WU XI, OU ZUDI, HU GUANGHANG, et al. Flame Suppression Effects of Binary Extinguishants on the Flammability of HFO-1243zf. [J]. Journal of refrigeration, 2023, 44(3).
WU XI, OU ZUDI, HU GUANGHANG, et al. Flame Suppression Effects of Binary Extinguishants on the Flammability of HFO-1243zf. [J]. Journal of refrigeration, 2023, 44(3). DOI: 10.3969/j.issn.0253-4339.2023.03.041.
HFO-1243zf (R1243zf) is a refrigerant with a low global warming effect and high development potential. The safety classification of R1243zf is A2; therefore
its flammability cannot be ignored. The critical flammability limits of R1243zf/R134a/R227ea
R1243zf/R125/R227ea
and R1243zf/R125/R134a were 10.82%–11.12%
10.49%–10.80%
and 10.89%–11.11% (by volume percentage)
respectively
which were determined using a 12 L glass flask reaction vessel
according to an experimental method described in ASHRAE 34-2019. Furthermore
both the critical suppression concentrations and critical flammability limits were calculated using a related estimation method for flammable refrigerant blends. Compared with the test results
the relative mean deviations were 3.45% and 1.68%
respectively. Finally
reasons for deviations in the retardant effect were analyzed based on the chemical inhibition mechanism.