Effect of pneumotransport pipe length on static and dynamic pressure
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Proceedings of International Scientific Conference on Multidisciplinary Studies Hosted online from Moscow, Russia Date: 11 th March, 2023 ISSN: 2835-5733 Website: econferenceseries.com 9 | P a g e EFFECT OF PNEUMOTRANSPORT PIPE LENGTH ON STATIC AND DYNAMIC PRESSURE Kholboev Doniyor Juraboevich Namangan Institute of Engineering and Technology, Namangan, Uzbekistan Senior teacher of the "Energy" department, xolbayev_doniyor@mail.ru tel.+99893-407-37-26 Abstract: The article reflects the results of the research of the change of air speed and aerodynamic force on the cross-section of the pipe during the transportation of cotton by pneumatic transport. It contains conclusions and suggestions on effective management of cotton pneumatic transport process. Keywords: cotton raw material, pneumatic transport equipment, air speed, pipe, pipe cross-section, diameter, aerodynamic force. The process of transporting cotton by air takes place in a closed system isolated from the outside atmosphere. In order to visualize this process, we will take the simplest scheme of an aerodynamic device and first consider the laws of air movement in it . In the picture, 1- suction pipe, 2- fan (pump), 3- drive pipe. The fan or pump is located in the center of the pneumatic equipment. When the system is at rest, that is, when the fan is not running, it is under the pressure of outside atmospheric air. In this case, the dynamic pressure is zero and the pressure inside the pipe is equal to the external atmospheric pressure: Р d =0 , P tot = Р st = Р atm , (1) When the fan is activated, it draws air from the first half of the device and blows it to the other side. As a result, there is a vacuum environment (thin air) on one side of the equipment and a dense air environment (excess pressure) on the other side. The total air pressure P tot that the fan can produce is equal to the sum of the static P st and dynamic P dyn pressures in the pipe: P tot = P st +P dyn , (2) Download 350.91 Kb. Do'stlaringiz bilan baham: |
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