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Diffusion pump

Index Diffusion pump

Diffusion pumps use a high speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the exhaust. [1]

28 relations: Annalen der Physik, Aspirator (pump), Baffle (heat transfer), Cecil Reginald Burch, Cold trap, Convection, Cryopump, Diffusion, Distillation, Fluid dynamics, Free molecular flow, Freeze-drying, Irving Langmuir, Laminar flow, Manhattan Project, Mass spectrometry, Molecule, Nature (journal), Polyphenyl ether, Proceedings of the Physical Society, Silicone oil, Suction cup, Supersonic speed, Surface condenser, Turbomolecular pump, Vacuum pump, Vapor pressure, Wolfgang Gaede.

Annalen der Physik

Annalen der Physik (English: Annals of Physics) is one of the oldest scientific journals on physics and has been published since 1799.

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Aspirator (pump)

An aspirator is a type of ejector-jet pump, which produces vacuum by means of the Venturi effect.

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Baffle (heat transfer)

Baffles are flow-directing or obstructing vanes or panels used in some industrial process vessels (tanks), such as shell and tube heat exchangers, chemical reactors, and static mixers.

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Cecil Reginald Burch

Cecil Reginald Burch, FRS (12 May 1901 – 19 July 1983) was a British physicist and engineer.

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Cold trap

In vacuum applications, a cold trap is a device that condenses all vapors except the permanent gases into a liquid or solid.

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Convection

Convection is the heat transfer due to bulk movement of molecules within fluids such as gases and liquids, including molten rock (rheid).

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Cryopump

A cryopump or a "cryogenic pump" is a vacuum pump that traps gases and vapours by condensing them on a cold surface, but are only effective on some gases.

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Diffusion

Diffusion is the net movement of molecules or atoms from a region of high concentration (or high chemical potential) to a region of low concentration (or low chemical potential) as a result of random motion of the molecules or atoms.

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Distillation

Distillation is the process of separating the components or substances from a liquid mixture by selective boiling and condensation.

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Fluid dynamics

In physics and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids - liquids and gases.

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Free molecular flow

Free molecular flow describes the fluid dynamics of gas where the mean free path of the molecules is larger than the size of the chamber or of the object under test.

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Freeze-drying

Freeze drying, also known as lyophilisation or cryodessication, is a low temperature dehydration process which involves freezing the product, lowering pressure, then removing the ice by sublimation.

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Irving Langmuir

Irving Langmuir (January 31, 1881 – August 16, 1957) was an American chemist and physicist.

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Laminar flow

In fluid dynamics, laminar flow (or streamline flow) occurs when a fluid flows in parallel layers, with no disruption between the layers.

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Manhattan Project

The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons.

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Mass spectrometry

Mass spectrometry (MS) is an analytical technique that ionizes chemical species and sorts the ions based on their mass-to-charge ratio.

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Molecule

A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.

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Nature (journal)

Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.

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Polyphenyl ether

Phenyl ether polymers are a class of polymers that contain a phenoxy and/or a thiophenoxy group as the repeating group in ether linkages.

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Proceedings of the Physical Society

The Proceedings of the Physical Society was a journal on the subject of physics, originally associated with the Physical Society of London, England.

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Silicone oil

A silicone oil is any liquid polymerized siloxane with organic side chains.

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Suction cup

A suction cup, also known as a sucker, is a device or object that uses the negative fluid pressure of air or water to adhere to nonporous surfaces, creating a partial vacuum.

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Supersonic speed

Supersonic travel is a rate of travel of an object that exceeds the speed of sound (Mach 1).

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Surface condenser

A surface condenser is a commonly used term for a water-cooled shell and tube heat exchanger installed on the exhaust steam from a steam turbine in thermal power stations.

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Turbomolecular pump

A turbomolecular pump is a type of vacuum pump, superficially similar to a turbopump, used to obtain and maintain high vacuum.

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Vacuum pump

A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum.

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Vapor pressure

Vapor pressure or equilibrium vapor pressure is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system.

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Wolfgang Gaede

Wolfgang Max Paul Gaede (25 May 1878 – 24 June 1945) was a German physicist and pioneer of vacuum engineering.

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Oil diffusion pump.

References

[1] https://en.wikipedia.org/wiki/Diffusion_pump

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