矿井通风的许多计算都要用到大气物理特性参数,尤其是空气重率这个参数,在风表校正、风机鉴定以及风筒特性测定等工作中,更是必不可少的。用图解的方法迅速地查出较为准确的空气物理特性参数,在实际工作中是不无好处的。当然,对某些要求很高的计算,用精确的公式仍是必要的。下面分别介绍空气重率图、干湿温度图、空气比容图和空气能量(总热量)图。 Many parameters of mine ventilation to use the physical parameters of the atmosphere, especially the air weight rate of this parameter, in the wind meter calibration, fan identification and determination of the characteristics of the hairdryer work is even more essential. The graphical method to quickly find more accurate physical parameters of the air, in actual work is not without merit. Of course, with some very demanding calculations, accurate formulas are still necessary. The following describes the air weight rate chart, wet and dry temperature map, air volume map and air energy (total calories) map.