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  2. Liquid nitrogen - Wikipedia

    en.wikipedia.org/wiki/Liquid_nitrogen

    Liquid nitrogen is a compact and readily transported source of dry nitrogen gas, as it does not require pressurization. Further, its ability to maintain temperatures far below the freezing point of water, specific heat of 1040 J ⋅kg −1 ⋅K −1 and heat of vaporization of 200 kJ⋅kg −1 makes it extremely useful in a wide range of ...

  3. Expansion ratio - Wikipedia

    en.wikipedia.org/wiki/Expansion_ratio

    [1] If a sufficient amount of liquid is vaporized within a closed container, it produces pressures that can rupture the pressure vessel. Hence the use of pressure relief valves and vent valves are important. [2] The expansion ratio of liquefied and cryogenic from the boiling point to ambient is: nitrogen1 to 696; liquid helium – 1 to 745 ...

  4. Liquid-to-gas ratio - Wikipedia

    en.wikipedia.org/wiki/Liquid-to-gas_ratio

    An important parameter in wet scrubbing systems is the rate of liquid flow. It is common in wet scrubber terminology to express the liquid flow as a function of the gas flow rate that is being treated. This is commonly called the liquid-to-gas ratio (L/G ratio) and uses the units of gallons per 1,000 actual cubic feet or litres per cubic metre ...

  5. Wait, How Many Cups Are In a Gallon? Here's an Easy Way to ...

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  6. Nitrogen - Wikipedia

    en.wikipedia.org/wiki/Nitrogen

    Because the liquid-to-gas expansion ratio of nitrogen is 1:694 at 20 °C, a tremendous amount of force can be generated if liquid nitrogen is rapidly vaporised 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. As a ...

  7. Liquefaction of gases - Wikipedia

    en.wikipedia.org/wiki/Liquefaction_of_gases

    Liquid nitrogen Liquefaction of gases is physical conversion of a gas into a liquid state ( condensation ). The liquefaction of gases is a complicated process that uses various compressions and expansions to achieve high pressures and very low temperatures, using, for example, turboexpanders .

  8. Liquid nitrogen engine - Wikipedia

    en.wikipedia.org/wiki/Liquid_nitrogen_engine

    Although the liquid nitrogen is colder than the ambient temperature, the liquid nitrogen engine is nevertheless an example of a heat engine.A heat engine runs by extracting thermal energy from the temperature difference between a hot and a cold reservoir; in the case of the liquid nitrogen engine, the "hot" reservoir is the air in the ambient ("room temperature") surroundings, which is used to ...

  9. U.S. gas prices in 2024: how much is gasoline in each state?

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    The current national gas price average is $3.62 per gallon. The average cost of gas has decreased 15% in the last two years, from when it was $4.27 per gallon. The highest recorded average price ...