Pressure centrifugal

For design, the maximum fluid pressure will occur when the bowl is full, R2 = 0. 

If the machine is separating a solid-liquid mixture, the mean density of the slurry in the bowl should be used in equation 13.131. 

The shell of an empty centrifuge bowl will be under stress due to the rotation of the bowl s own mass this self-pressure is given by  

The minimum wall thickness required can be estimated using the equations for membrane stress derived in Section 13.3.4. For a solid bowl 

With a perforated basket the presence of the holes will weaken the wall. This can be allowed for by introducing a ligament efficiency into equation 13.134 (see Section 13.11) 

The fluid in a rotating centrifuge exerts pressure on the walls of the bowl or basket. The minimum wall thickness required to contain this pressure load can be determined in a 

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Figure 4.5 Some methods of filtration schematic), (a) Gravity atmospheric pressure), h) Vacuum, (c) Pressure, d) Centrifugal (pressure) Apauf...

If the resistance of the cloth is negligible, —AP is equal to the centrifugal pressure. More generally, if the cloth, considered together with the supporting wall of the basket, is equivalent in resistance to a cake of thickness L, situated at the walls of the basket, the pressure drop —A P" across the cloth is given by ... 

For Nozzle (3), a pressure atomization nozzle, also called the centrifugal pressure nozzle, can be employed. It is desirable to use the eddy pressure nozzle (Chinese patent, ZL00230305.1). The latter has a higher flow-rotating efficiency, and thus requires less energy to atomize the liquid or solid-in-liquid suspension. 

FIG. 18-157 Two-phase decanter centrifuge—pressurized liquid discharge. (Flottweg Separation Technology.)... 

On examining (5 18) and (5-19), we see that, besides the centrifugal pressure term involving uj, the largest of the nonlinear, inertial terms is... 

The aether of a rotating vortex tends to recede from the central star under centrifugal pressure which becomes visible as light, emitted by the star and reflected by the planets. Because of its confinement in the foam-like structure the aether exerts an inward pressure on the planets. The reason why planets are not pushed into the central star is because they are in a state of uniform linear motion. Under aetherial pressure the direction of this motion changes continually and in the state of balance the planet stays on a closed characteristic orbit around the sun. Although Newton scoffed at the Cartesian model he gave the law of inertia in this exact same form. 

If the bond between the copper tube and the A286 support tube is neglected, the centrifugal pressure of the copper on the overwrap is 2.52 MPa (366 psi) at 12,000 rpm, which produces a hoop stress of 298 MPa (43,200 psi) in the composite overwrap. The hoop stress in the overwrap itself, due to the 12,000-rpm rotation, is 150 MPa (21,700 psi). Hence, the combined hoop stress in the overwrap is 447 MPa (64,900 psi) at design speed and 541 MPa (78,500 psi) at the overspeed (13,200 rpm) condition. The observed tensile strength in the hoop direction for the composite at 77 K was —896 MPa (130,000 psi). Hence, sufficient structural protection under rotation should be provided by the overwrap. Warm tests on the complete generator were recently conducted up to 12,000 rpm with no apparent problems with the shield construction. 

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