二氧化碳在RP-3航空燃油中溶解度实验测定

以国产实际使用并含有添加剂的RP-3号燃油为研究对象，测量了燃油在不同温度下的密度，搭建了压力降落法实验装置，测定了5~40℃温度及3组不同压力范围下，CO2在RP-3号燃油中的溶解度，采用ASTM D2780-92标准中提供的相对密度法对溶解度进行了计算并与实验值进行了比较.结果显示:计算值与实验值有很大偏差，且随着温度上升及压力下降，该偏差增加，最大相对偏差可达到106%.根据实验值，对ASTM D2780-92中的阿斯特瓦尔德系数计算公式进行了线性修正，修正后计算的溶解度和实验值误差在10%之内.该研究结果可为绿色惰化的设计提供参考依据. 

Experimental measurement of solubility of carbon dioxide in RP-3 jet fuel

The actually used RP-3 jet fuel containing additives was employed as the stud y object to measure its density and the solubility of CO2 from 5 ℃ to 40 ℃ under three pressure ranges via a experiment apparatus based on the pressure reduction method.The experimental solubility was compared with the theoretical solubility calculated by a relative density method provided in the standard of ASTM D2780-92.The result reveals that there exists a large deviation between experimental solubility and the calculated solubility.The deviation rises with the increase of the temperature or the decrease of the pressure,and the maximum deviation is over 106％.Hence,the formula to calculate the Ostwald coefficient depicted in ASTM D2780-92 is linearly corrected via the experimental data and the deviation is within 10％ after this correction.The study results can provide a reference for the design of the green on-board inert gas generation system.