Modification of technology and aerodynamics of moving hot bulk materials

2021 ◽  
pp. 10-14
Author(s):  
S. Ya. Davydov ◽  
V. N. Makarov ◽  
N. V. Makarov
Keyword(s):  
Integral Equations ◽  
Temperature Data ◽  
Sufficient Accuracy ◽  
Geometric Parameters ◽  
Air Pressure ◽  
Compressed Air ◽  
Pipeline Transport ◽  
Thermal Heating ◽  
Bulk Materials ◽  
Translational Speed

Variants of pneumatic transport with temperature data of the material are given. Methods for protecting the container from thermal heating are listed. An unloading device for cargo containers for pipeline transport of hot bulk materials has been developed. The proposed system of two integral equations will make it possible to calculate with sufficient accuracy the required compressed air pressure, geometric parameters of aerodynamic ridges for a given length of the unloading section of rotating containers and their translational speed. The presence of aerodynamic ridges will reduce the loss of energy from friction when moving containers in a spiral.

scholarly journals Energy Efficiency of Pneumatic Cylinder Control with Different Levels of Compressed Air Pressure and Clamping Cartridge

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3711
Author(s):  
Vladislav Blagojevic ◽  
Dragan Seslija ◽  
Slobodan Dudic ◽  
Sasa Randjelovic
Keyword(s):  
Energy Consumption ◽  
Air Pressure ◽  
Compressed Air ◽  
Pneumatic Cylinder ◽  
Final Position ◽  
Return Stroke ◽  
Cylinder Piston ◽  
Reduce Energy Consumption ◽  
The Cost ◽  
Different Levels

Since pneumatic systems are widely used in various branches of industry, the need to find ways to reduce energy consumption in these systems has become very pressing. The reduction in energy consumption in these systems is reflected in the reduction of compressed air consumption. The paper presents a cylinder control system with a piston rod on one side, in which the reduction in energy consumption is ensured by using different levels of supply pressure in the working and the return stroke, and by holding the cylinder piston rod in its final positions with a clamping cartridge. Clamping and holding the piston rod in its final position further affects the reduction in energy consumption. Experimental data show that the application of the proposed control leads to a decrease in compressed air consumption of 25.54% to 32.97%, depending on the compressed air pressure used in the return stroke. The cost-effectiveness of the proposed cylinder control with different levels of compressed air pressure and holding the final position by clamping cartridge is presented.

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