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Pumping capacity can be improved by prepumping the system by another simple and clean vacuum pump like a diaphragm pump or even a water aspirator or compressed-air venturi pump. Sequential or multistage pumping can be used to attain lower pressures. In this case two or more pumps are connected in parallel to the vacuum vessel.
Steam injectors use the Venturi effect and the latent heat of evaporation to deliver feed water to a steam locomotive boiler. Sandblasting nozzles accelerate and air and media mixture; Bilge water can be emptied from a moving boat through a small waste gate in the hull. The air pressure inside the moving boat is greater than the water sliding ...
A vacuum ejector, or simply ejector is a type of vacuum pump, which produces vacuum by means of the Venturi effect.. In an ejector, a working fluid (liquid or gaseous) flows through a jet nozzle into a tube that first narrows and then expands in cross-sectional area.
At the same time, the venturi effect causes the static pressure, and therefore the density, to decrease at the constriction. Choked flow is a limiting condition where the mass flow cannot increase with a further decrease in the downstream pressure environment for a fixed upstream pressure and temperature.
This causes the air pressure in chamber A to drop in proportion with the partial vacuum in the boost venturi. [14] At the same time, air entering the carburetor compresses the air in the impact tubes, generating a positive pressure in chamber B that is proportional to the density and speed of the air entering the engine.
Venturi tube; Ejector venturi scrubber, a wet scrubber; Venturi effect, a fluid or air flow effect; Venturi mask, a medical device; Venturi meter, a device for measuring the flow rate of fluids in a pipe; Venturi pump, a pump using the venturi effect; Venturi scrubber, gas stream scrubber; Venturi Transport Protocol, transport layer protocol
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Clemens Herschel (March 23, 1842 – March 1, 1930) was an American hydraulic engineer.His career extended from about 1860 to 1930, and he is best known for inventing the Venturi meter, which was the first large-scale, accurate device for measuring water flow.