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The strength of the vacuum produced depends on the velocity and shape of the fluid jet and the shape of the constriction and mixing sections, but if a liquid is used as the working fluid, the strength of the vacuum produced is limited by the vapor pressure of the liquid (for water, 3.2 kPa or 0.46 psi or 32 mbar at 25 °C or 77 °F). If a gas ...
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.
If a pump forces the liquid through a tube connected to a system consisting of a Venturi to increase the liquid speed (the diameter decreases), a short piece of tube with a small hole in it, and last a Venturi that decreases speed (so the pipe gets wider again), the gas will be sucked in through the small hole because of changes in pressure.
The ejector venturi is unique among available scrubbing systems since it can move the process gas without the aid of a fan or blower. The liquid spray coming from the nozzle creates a partial vacuum in the side duct of the scrubber. The partial vacuum is due to the Bernoulli effect, and is similar to water aspirators used in chemistry labs ...
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
A partial vacuum may be generated by increasing the volume of a container. To continue evacuating a chamber indefinitely without requiring infinite growth, a compartment of the vacuum can be repeatedly closed off, exhausted, and expanded again. This is the principle behind a positive displacement pump, for example the manual water pump. Inside ...
The Autolite 2100 is a two venturi (barrel) carburetor manufactured in multiple variants by Autolite from 1957 to 1973. Eight sizes ranging from 190 cfm to 424 cfm were made, all with synchronized venturis, variously with manual, electric, or automatic hot-air chokes.
The term "roughing pump" derives from the vacuum range it works in, "rough vacuum", above 1x10 −3 torr (0.1 Pa). Pumps that operate in the high vacuum ranges typically don't operate, or only operate inefficiently, at atmospheric pressures, whereas pumps that work efficiently at atmospheric pressure usually cannot produce a vacuum lower than ...