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Fluidized Bed Drying
Published in Arun S. Mujumdar, Handbook of Industrial Drying, 2020
The height of the fluidized layer is controlled by a weir over which the dried material freely flows. The fluidizing air is heated and led into the plenum chamber to the fluid bed. An air distributor ensures that the fluidizing air velocity is even throughout the fluidized layer and that all material is properly fluidized. The exhaust air is cleaned by a cyclone, and entrained fines from the cyclone are returned to the dried product stream. The freeboard above the fluidized layer must be high enough to avoid excessive entrainment of particles (see Ref. 21). Because of the intimate contact between particles and fluidizing air just above the air distributor and the rapid mixing of the particles in the fluidized layer, the hot drying air is immediately quenched to the temperature of the particles and no overheating of the material will occur.
Power unit – engine
Published in Andrew Livesey, Practical Motorsport Engineering, 2019
Induction systems fall into three categories. These are: Open induction, usually the carburetter, or the throttle body has an open ram pipeClosed induction, this uses a plenum chamber with air filterForced induction, as with a turbo-charger, or supercharger The ram pipe length can be changed to suit the engine operating speed – this is very much a trial and error activity. The plenum (Latin for full) chamber is designed to give the engine a supply of still air. With forced induction air is in effect pumped into the cylinder under pressure.
Power unit – engine
Published in Andrew Livesey, Motorcycle Engineering, 2021
Induction systems fall into three categories: Open induction, usually the carburetor, or the throttle body has an open ram pipeClosed induction, this uses a plenum chamber with air filterForced induction, as with a turbocharger or supercharger
Influence of spent air confinement on pressure distribution over a flat plate impinged by an array of jets
Published in International Journal of Ambient Energy, 2020
Naveen G. Patil, Mohemmedtayab A. Mujawar, S. A. Biradar, M. Adimurthy, Vadiraj V. Katti
A schematic illustration of the experimental layout is shown in Figure 1. The experimental work is carried out for different configurations to study the wall-static pressure distribution over a smooth flat plate under different spent air exit schemes, shown in Figure 2. The experimental parameters are listed in Table 1. Air is supplied to the plenum chamber by a blower through a calibrated venturi meter. The plenum chamber having a cross-section of 200 mm*100 mm and length of 430 mm made up of galvanised iron sheet houses three meshes or flow straighteners which serve the purpose of conditioning the fluid flow by removing any flow disturbances present in it. The volumetric discharge of air is regulated by a control valve located downstream of the venturi meter which subsequently sets up the required jet Reynolds number. An acrylic jet orifice plate (220 mm*140 mm*5 mm thick) with an inline array of five orifice jets is fastened to the exit of the plenum chamber. The air via the supply channels, through the plenum chamber, exits the orifice plate in the form of five jets with high velocity and impinges on the target flat surface mounted on a 2-D traverse system. The 2-D traverse system also facilitates the setting up of the nozzle-exit to target-plate spacing.