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为分析药剂层厚度、风机功率及药剂铺设方式对矿井避险空间CO2吸收效率影响,利用变频器、多功能探测器和U型差压计,研究了CO2浓度及药剂层通风阻力变化.结果表明:药剂厚度小于250mm时,厚度越大,CO2吸收效率越高;厚度大于250mm时,厚度越大,吸收效率越低,最佳厚度为250mm;CO2吸收效率随风机功率增加而增高,功率增至185 W后,增幅减小;100mm整体药剂层及50+50mm分隔药剂层吸收效率随风机功率增加而增高;同一风机功率下,整体层吸收效率高于分隔层,吸收效率差最高达32%,2种药剂层吸收效率差随功率增加而减小;风机功率为185 W时,250mm厚药剂层吸收效率为0.91,最大通风阻力为282Pa.
In order to analyze the effect of drug layer thickness, fan power and drug laying mode on the CO2 absorption efficiency in safe haven space, the changes of CO2 concentration and ventilation resistance of drug layer were studied by using frequency converter, multi-function detector and U- : When the thickness is less than 250mm, the higher the CO2 absorption efficiency is, the greater the thickness is and the lower the absorption efficiency is, the best thickness is 250mm. The CO2 absorption efficiency increases with the increase of fan power, To 185 W, the increase rate decreased. The absorption efficiency of 100mm whole drug layer and 50 + 50mm separated drug layer increased with the increase of fan power. Under the same fan power, the overall layer absorption efficiency was higher than that of the separation layer, and the difference of absorption efficiency was as high as 32 %, The difference of absorption efficiency of two kinds of drug layer decreases with the increase of power; when the power of the fan is 185 W, the absorption efficiency of the drug layer of 250mm thick is 0.91 and the maximum ventilation resistance is 282Pa.