- vacuum systems
- • вакуумирана система• уредба за вакуумиране
English-Bulgarian polytechnical dictionary . 2013.
vacuum systems
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Vacuum sewer — Vacuum sewers were first installed in Europe in 1882 but until the last 30 years it had been relegated to a niche market. The first who has applied the negative pressure drainage (so called vacuum sewerage) was the Dutch engineer Liernur in the… … Wikipedia
Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… … Wikipedia
Vacuum pump — A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The vacuum pump was invented in 1650 by Otto von Guericke. Types Pumps can be broadly categorized according to three… … Wikipedia
Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner … Wikipedia
Vacuum flange — Conflat redirects here. For other uses, see Conflat (disambiguation). A KF 25 tee, o ring, and clamp. A vacuum flange is a flange at the end of a tube used to connect vacuum chambers, tubing and vacuum pumps to each other. Contents … Wikipedia
Vacuum swing adsorption — Vacuum Swing Absorption (VSA) is a non cryogenic gas separation technology. Using special solids, or absorbents, VSA segregates certain gases from a gaseous mixture under minimal pressure according to the species molecular characteristics and… … Wikipedia
Vacuum energy — is an underlying background energy that exists in space even when devoid of matter (known as free space). The vacuum energy is deduced from the concept of virtual particles, which is itself derived from the energy time uncertainty principle. Its… … Wikipedia
Vacuum permeability — This article is about the magnetic constant. For the analogous electric constant, see vacuum permittivity. Vacuum permeability, permeability of free space, or magnetic constant is an ideal, (baseline) physical constant, which is the value of… … Wikipedia
Vacuum distillation — At atmospheric pressure, dimethyl sulfoxide boils at 189°C. Under a vacuum, it distills off into the connected receiver at only 70°C. Vacuum distillation is a method of distillation whereby the pressure above the liquid mixture to be distilled is … Wikipedia
Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… … Wikipedia
Vacuum brake — The vacuum brake is a braking system used on trains. It was first introduced in the mid 1860s and a variant, the automatic vacuum brake system became almost universal in British train equipment, and in those countries influenced by British… … Wikipedia
