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2. Turbomolecular pump - Wikipedia

   en.wikipedia.org/wiki/Turbomolecular_pump

   Most turbomolecular pumps employ multiple stages, each consisting of a quickly rotating rotor blade and stationary stator blade pair. The system is an axial compressor that puts energy into the gas, rather than a turbine, which takes energy out of a moving fluid to create rotary power, thus "turbomolecular pump" is a misnomer.

3. Molecular drag pump - Wikipedia

   en.wikipedia.org/wiki/Molecular_drag_pump

   A molecular drag pump is a type of vacuum pump that utilizes the drag of air molecules against a rotating surface. [1] The most common sub-type is the Holweck pump, which contains a rotating cylinder with spiral grooves which direct the gas from the high vacuum side of the pump to the low vacuum side of the pump. [2]

4. Turbopump - Wikipedia

   en.wikipedia.org/wiki/Turbopump

   There are two common types of pumps used in turbopumps: a centrifugal pump, where the pumping is done by throwing fluid outward at high speed, or an axial-flow pump, where alternating rotating and static blades progressively raise the pressure of a fluid. Axial-flow pumps have small diameters but give relatively modest pressure increases.

5. Edwards Vacuum - Wikipedia

   en.wikipedia.org/wiki/Edwards_Vacuum

   After the war, some of the inventions found new applications. The first transistor radio was released in 1954, and its manufacturing process made use of vacuum pumps. [43] The first integrated circuit or “chip” came to the market at the end of the 1950s, and vacuum pumps again played an important role in their production. These early ...

6. Variable geometry turbomachine - Wikipedia

   en.wikipedia.org/wiki/Variable_geometry_turbomachine

   Where, is speed of rotation. . is flow rate. . is impeller diameter. . Thus non-dimensional representation is highly advantageous for converging to single performance curve that would otherwise result in multiple curves if plotted dimensionally. Figure 1 shows head characteristics [1] of centrifugal pump versus flow coefficient. Within the normal operating range of this pump, 0.03 <Q/(ND 3 ...

7. Turbomachinery - Wikipedia

   en.wikipedia.org/wiki/Turbomachinery

   Pumps are used to move fluids around using some sort of mechanical power, from electric motors to full size diesel engines. Pumps have thousands of uses, and are the true basis to turbomachinery (Škorpík, 2017). Air compressors - Air compressors are another very popular turbomachine. They work on the principle of compression by sucking in and ...