新型替代制冷剂HFC-32爆炸极限影响因素研究  

Study on the Effect of Different Factors over the Explosion Range for New Alternative Refrigerants HFC-32

作　　者：王永贞[1] 金晶[1,2] 熊志波[1] 孟磊[1] 郭明山[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海理工大学协同创新研究院,上海200093

出　　处：《制冷学报》2015年第6期6-9,33,共5页Journal of Refrigeration

基　　金：国家科技支撑计划(2015BAA04B03)资助项目;上海市基础研究重点项目(14JC1404800)资助~~

摘　　要：本文利用可燃性气体爆炸极限测定实验台研究了温度、相对湿度、阻燃剂对HFC-32爆炸极限的影响。结果表明：在-5~55℃范围之内,升高温度会促使HFC-32爆炸上限逐渐增大,其爆炸下限逐渐减少,拓宽了HFC-32的爆炸区间;当相对湿度低于60%时,增大相对湿度会导致HFC-32爆炸下限稍微增大,其爆炸上限稍微减少,当相对湿度由60%逐渐增至87%时,其爆炸上限急剧减少,直至爆炸极限范围消失;添加CF_3I或HFC-134a阻燃剂可促使HFC-32爆炸极限范围减少,而且CF_3I的阻燃效果优于HFC-134a,当CF_3I/HFC-32体积比由0增至1或HFC-134a/HFC-32体积比由0增至10时,两种混合气的爆炸范围最终都减少为0。研究结果为抑制HFC-32燃烧提供了重要的理论依据。The influences of temperature,relative humidity and fire-retardant on the explosion range of new alternative refrigerants HFC-32 were investigated through an experiment bed for the explosion range of flammable gases. The results indicated that the enhancement of temperature can improve the upper explosion range of HFC-32 and decrease its lower explosion range,then enlarges the explosion range of HFC-32 under the temperature of- 5 ~ 55 ℃. The improvement of relative humidity makes the lower explosion range of HFC-32 slightly increase,and the upper explosion range slightly decrease at the relative humidity range of less than 60% for HFC-32. When the relative humidity increases from 60% to 87%,the upper explosion range of HFC-32 decreases rapidly to make the explosive range of HFC-32 disappear. The addition of CF_3 I or HFC-134 a fire-retardant can lead the explosion range of HFC-32 to reduce,and the effect of CF_3 I on the inflaming retarding of HFC-32 is superior to HFC-134 a. When the volume ratio of CF_3 I / HFC-32 increases from 0 to 1 or HFC-134 a / HFC-32 increases from 0 to 10,their explosion ranges disappear. This provides an important theoretical basis for inhibiting the combustion of HFC-32.

关 键 词：替代制冷剂 爆炸极限 实验研究 HFC-32 

分 类 号：TB64[一般工业技术—制冷工程] O643.2[理学—物理化学]