This study introduces a novel methodology to evaluate the behaviour of biomass material by examining ratio aeration and deaeration time constants. To this end, series tests were conducted on four different materials, namely, cottonseed, wood chips, pellets, wheat straw, in order investigate their behaviours. The derives pressure drop equations, discusses corresponding constant expression. Subse...

The pressure drop and conveying stability caused by the bend significantly affect pneumatic process of stiff shotcrete, which is key to solving problem long-distance transportation. In this paper, effects different air velocities (32 m/s, 36 40 m/s), water-cement ratios (0.1, 0.2, 0.3), bending-diameter (4, 12, 20) on elbow R1 R2 are studied using response surface method. characterized variatio...