气力输送能量设计法

On the Energy Design Method for Pneumatic Conveying

介绍了气力输送能量设计法,它区别于传统的阻力设计法,是建立在能量守恒定律基础上,将气流对物流输送过程,归结为气流能量向物料转移过程,将气流因此造成的压力、体积以至温度的变化,统一到对气流能量变化的计算中来,而将不同状态物料流从气流中获得的势能和动能作为基本受能量,求解与气流能耗的平衡。能量设计法与传统阻力设计法及其丰富的信息数据系统相容,设计过程中可以全面借用,且更适应密相高压气力输送系统的统筹设计,实测、验证方法简单易行。通过设计实例,得到较高效能比和较为准确的实际结果。

The energy design method for pneumatic conveying was introduced, which was different from traditional resistance design method and the material conveying by air flow resulted in air flow energy to transition of material, and the pressure, volume and temperature changes caused herewith by air flow were united in calculation of air flow energy changes, while the balance of air flow energy consumption was solved based on the potential energy and kinetic energy obtained from the material flows with different states as basic received energy. The functional design method and traditional resistance design method as well as the compatibility of their rich information data systems could be used completely during the design and more suitable for unified design of high - pressure dense phase pneumatic conveying system. The practical test and verification methods were simple and feasible. The actual results with high efficiency ratio and accuracy were obtained through design examples.