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Liquid air is an alternative to using liquid nitrogen in generating low lying fog effects. Liquid air is composed of N 2 and O 2 mixed in a ratio of 79% nitrogen and 21% oxygen stored as a liquid in insulated cylinders. This ratio of nitrogen to oxygen is the same as that of atmospheric air, and indeed liquid air may be fabricated by simply ...
Because the liquid-to-gas expansion ratio of nitrogen is 1:694 at 20 °C (68 °F), a tremendous amount of force can be generated if liquid nitrogen is vaporized in an enclosed space. In an incident on January 12, 2006 at Texas A&M University , the pressure-relief devices of a tank of liquid nitrogen were malfunctioning and later sealed.
True liquid air is not practical, as it cannot be stored in metal spray cans due to extreme pressure and temperature requirements. Common duster gases include hydrocarbon alkanes , like butane , propane , and isobutane , and hydrofluorocarbons like 1,1-difluoroethane , 1,1,1-trifluoroethane , or 1,1,1,2-tetrafluoroethane which are used because ...
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A cryogenic gas plant is an industrial facility that creates molecular oxygen, molecular nitrogen, argon, krypton, helium, and xenon at relatively high purity. [1] As air is made up of nitrogen, the most common gas in the atmosphere, at 78%, with oxygen at 19%, and argon at 1%, with trace gasses making up the rest, cryogenic gas plants separate air inside a distillation column at cryogenic ...
To prepare The Times’ candy samples for analysis, Infinite CAL scientists froze them in liquid nitrogen to make them brittle. Then they used a grinder to pulverize the frozen sweets into a ...
Treatment: “Your dermatologist may freeze them with liquid nitrogen, apply other topical treatments or lasers, or give you a prescription for a cream to use at home," Dr. Zeichner says. Alamy ...
The liquid air, which takes up one-thousandth of the volume of the gas, can be kept for a long time in a large vacuum flask at atmospheric pressure. At times of high demand for electricity, the liquid air is pumped at high pressure into a heat exchanger, which acts as a boiler. Air from the atmosphere at ambient temperature, or hot water from ...
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