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Kaeser Compressors, Inc. manufactures compressed air and vacuum products, including rotary screw compressors, oil-less reciprocating compressors, rotary lobe blowers, rotary screw blowers, high-speed turbo blowers, refrigerated and desiccant dryers, filters, condensate management systems and other related products. The company provides service ...
Principal view of the pumping action of a twin-screw pump with a six-lobe female screw and a five-lobe male screw. A compressor (as opposed to a pump) would be shaped the same way, except that the shape of the lobes would change along the length of the screw, so that the volume of the trapped pockets would get squeezed smaller as they get closer to the exhaust port.
A reciprocating compressor or piston compressor is a positive-displacement compressor that uses pistons driven by a crankshaft to deliver gases at high pressure. [ 1 ] [ 2 ] Pressures of up to 5,000 psig are commonly produced by multistage reciprocating compressors.
The simplest inlet to a centrifugal compressor is typically a simple pipe. Depending upon its use/application inlets can be very complex. They may include other components such as an inlet throttle valve, a shrouded port, an annular duct (see Figure 1.1), a bifurcated duct, stationary guide vanes/airfoils used to straight or swirl flow (see Figure 1.1), movable guide vanes (used to vary pre ...
The company was founded in 1901 at 160 East Lake street in Chicago as the McMaster-Davis Supply Company. [6] [7] Starting with $50,000 in investor capital, its founders were T.J. McMaster, a former stationary engineer, and F.C. Davis, who had been a chief engineer in the U.S. Navy.
Rotary screw compressors use two meshed rotating positive-displacement helical screws to force the gas into a smaller space. [1] [6] [7] These are usually used for continuous operation in commercial and industrial applications and may be either stationary or portable. Their application can be from 3 horsepower (2.2 kW) to over 1,200 horsepower ...
A dual-spool axial-flow compressor. N 1 and N 2 represent the rotational speed of the low- and high-pressure compressors respectively. Both are presented on the indicator as a percentage of design rpm. [10] All compressors have an optimum point relating rotational speed and pressure, with higher compressions requiring higher speeds.
This has made it possible to identify individual atomic columns with unprecedented clarity. Aberration-corrected STEM was demonstrated with 1.9 Å resolution in 1997 [8] and soon after in 2000 with roughly 1.36 Å resolution. [9] Advanced aberration-corrected STEMs have since been developed with sub-50 pm resolution. [10]
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