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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 ...
The type of oxygen sensor used in most underwater diving applications is the electro-galvanic oxygen sensor, a type of fuel cell, which is sometimes called an oxygen analyser or ppO 2 meter. They are used to measure the oxygen concentration of breathing gas mixes such as nitrox and trimix . [ 9 ]
Oxygen transmission rate (OTR) is the measurement of the amount of oxygen gas that passes through a substance over a given period. It is mostly carried out on non-porous materials, where the mode of transport is diffusion, but there are a growing number of applications where the transmission rate also depends on flow through apertures of some description.
Oxygen cleaning may be required for concentrations as low as 23% [3] Other common specifications for oxygen cleaning include ASTM G93 and CGA G-4.1. [ 4 ] Cleaning agents used range from heavy-duty industrial solvents and detergents such as liquid freon , trichlorethylene and anhydrous trisodium phosphate , followed by rinsing in deionised water .
As oxygen is consumed to form iron oxide the level of oxygen in the surrounding atmosphere is reduced. Absorber technology of this type may reduce the oxygen level in the surrounding atmosphere to below 0.01%. [2] [3] Complete oxidation of 1 g of iron can remove 300 cm 3 of oxygen in standard conditions.
A plastic bucket fitted with a toilet seat for comfort and a lid and plastic bag for waste containment. A bucket toilet is a basic form of a dry toilet whereby a bucket (pail) is used to collect excreta. Usually, feces and urine are collected together in the same bucket, leading to odor issues. The bucket may be situated inside a dwelling, or ...
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