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A voltage-regulator tube (VR tube) is an electronic component used as a shunt regulator to hold a voltage constant at a predetermined level. Physically, these devices resemble vacuum tubes, but there are two main differences: Their glass envelopes are filled with a gas mixture, and
One manifold is connected to a source of purified inert gas, while the other is connected to a vacuum pump. The inert-gas line is vented through an oil bubbler, while solvent vapors and gaseous reaction products are prevented from contaminating the vacuum pump by a liquid-nitrogen or dry-ice/acetone cold trap.
Several types of valve connections for propane, butane, and LPG containers exist for transport and storage, sometimes with overlapping usage and applications, and there are major differences in usage between different countries. Even within a single country more than one type can be in use for a specific application.
English: This is a diagram of a vacuum gas manifold with three-way stopcocks. The stopcock opens/closes the reaction line to an inert gas and opens/closes the reaction line to vacuum. The stopcock opens/closes the reaction line to an inert gas and opens/closes the reaction line to vacuum.
English: This is a diagram of a vacuum gas manifold with two Teflon taps per reaction line. One Teflon tap opens/closes the reaction line to an inert gas and the other Teflon tap opens/closes the reaction line to vacuum. Inert gas in; Inert gas out; Vacuum; Reaction line; Teflon tap to inert gas; Teflon tap to vacuum
In spray drying, a slurry of very small solids is rapidly dried by suspension in a hot gas. The slurry is first atomized into very small liquid droplets which are then sprayed into a stream of hot dry air. The liquid rapidly evaporates leaving behind dry powder or dry solid granules.
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A vacuum insulated evaporator (VIE) is a form of pressure vessel that allows the bulk storage of cryogenic liquids including oxygen, nitrogen and argon for industrial processes and medical applications. [1] The purpose of the vacuum insulation is to prevent heat transfer between the inner shell, which holds the liquid, and surrounding ...