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制冷剂的可燃性在一定程度上限制了其使用范围。通过基团贡献法分析了阻燃剂对可燃工质的抑制系数,结合燃烧学理论,对火焰传播速度和卤素工质的浓度变化关系进行了分析,得到了混合工质中阻燃剂的最小惰化浓度理论估算公式。对二元混合工质爆炸极限进行了实验研究,结果表明,可燃制冷剂在化学计量浓度下,当火焰传播速度准确时,理论估算值和实际实验数据基本吻合,理论估算结果对可燃制冷剂的安全使用有重要意义。
The flammability of the refrigerant to a certain extent limits its scope of use. By means of group contribution method, the inhibition coefficient of flame retardant on combustible working fluid was analyzed. Combining the combustion theory, the relationship between the flame propagation velocity and the concentration of halogen working fluid was analyzed. The minimum of flame retardants Inert concentration theory estimation formula. The experimental study on the explosion limit of binary mixtures showed that when the propagation speed of combustible refrigerant was accurate at stoichiometric concentrations, the theoretic estimates were in good agreement with the experimental data. The theoretical results of the theoretical calculations for the combustible refrigerant Safe to use is important.