feed pressure

feed pressure

[′fēd ‚presh·ər]
(mechanical engineering)
Total weight or pressure, expressed in pounds or tons, applied to the drilling stem to make the drill bit cut and penetrate the geologic, rock, or ore formation.
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Figs 4 and 5 show that within the pressure range, pure PSU membrane presented a decreasing trend of permeance with increasing feed pressure. Here in the Fig, the CO2 and CH4 permeance decreased from 7.40+-0.12 to 3.87+-0.2 GPU and 1.05+-0.05 to 0.34+-0.1 GPU with an increase in the pressure from 2 to 10 bar for pure PSU membrane.
Process data via DuPont's innovative, proprietary software, Wave, shows how the pre-treatment stage in the system minimizes membrane fouling, which in turn lowers required system feed pressure and the need for frequent membrane cleanings.
Variable feed pressure is applied through a motor/gearbox/chain combination providing 30,000-lb.
Every day the plant Initiates 36 filter press cycles lasting around 30 minutes each at feed pressure of 6 bar and maximum pressure of 15 bar.
Metris addlQ automatically measures and controls the hydraulic and feed pressure. For faster filter cake discharge, the speed of the plate shifter can be adjusted.
* Up to four units can share the same manifold and pneumatic connections, such as a common feed pressure and exhaust
This company has introduced a robust new series of ID grippers with an 8-85mm diameter range and high holding force that can be adjusted to individual workpieces via feed pressure. Color-coded to correspond with clamping positions for pushed and drawn parts and featuring strong elastomer bellows made of EPDM or silicone, the latter of which is FDA approved for direct contact with food, the new single-acting, pneumatically operated expansion grippers gently grip the inner contours of workpieces without leaving any marks, providing an effective alternative to suction cups and sprue grippers for parts with holes or recesses.
Interestingly, PSf/Ti[O.sub.2] 3 wt% did not have C[H.sub.4] permeability at 1 bar feed pressure. While, the amount of C[O.sub.2] permeance at same pressure for mentioned membrane was 0.26 GPU.
The reason to cool the screw this way is to prevent polymer from sticking to its surface until some feed pressure is developed to "clean" the screw by conveying material forward.
The feed pressure as well as other parameters such as operational temperature and properties of the membrane has significant effect on the performance of SWRO process.