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  2. R-410A - Wikipedia

    en.wikipedia.org/wiki/R-410A

    R-410A is a refrigerant used in air conditioning and heat pump applications. It is a zeotropic but near-azeotropic mixture of difluoromethane (CH 2 F 2, called R-32) and pentafluoroethane (CHF 2 CF 3, called R-125). R-410A is sold under the trademarked names AZ-20, EcoFluor R410, Forane 410A, Genetron R410A, Puron, and Suva 410A.

  3. List of refrigerants - Wikipedia

    en.wikipedia.org/wiki/List_of_refrigerants

    Absolute critical pressure in kilopascals Since over 100,000 refrigerant blends are possible, [ 2 ] this list should only have notable refrigerants and refrigerant blends. List

  4. File:Charts for low pressure steam heating, (IA ...

    en.wikipedia.org/wiki/File:Charts_for_low...

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  5. Vapor-compression refrigeration - Wikipedia

    en.wikipedia.org/wiki/Vapor-compression...

    A representative pressure–volume diagram for a refrigeration cycle. Vapour-compression refrigeration or vapor-compression refrigeration system (VCRS), [1] in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air conditioning of buildings and automobiles.

  6. Thermodynamic diagrams - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_diagrams

    If the gas is heated so that the temperature of the gas goes up to T 2 while the piston is allowed to rise to V 2 as in Figure 1, then the pressure is kept the same in this process due to the free floating piston being allowed to rise making the process an isobaric process or constant pressure process. This Process Path is a straight horizontal ...

  7. Zeotropic mixture - Wikipedia

    en.wikipedia.org/wiki/Zeotropic_mixture

    A zeotropic mixture, or non-azeotropic mixture, is a mixture with liquid components that have different boiling points. [1] For example, nitrogen, methane, ethane, propane, and isobutane constitute a zeotropic mixture. [2]

  8. What is a normal blood pressure reading? - AOL

    www.aol.com/lifestyle/normal-blood-pressure...

    "Your blood pressure is supposed to be under 140 over 90, optimally closer to 120 over 80."

  9. R-454B - Wikipedia

    en.wikipedia.org/wiki/R-454B

    Because of its reduced global warming potential (GWP), R-454B is intended to be an alternative to refrigerant R-410A in new equipment. [2] [3] [4] R-454B has a GWP of 466, which is 78 percent lower than R-410A's GWP of 2088. [2] R-454B is non-toxic and mildly flammable, with an ASHRAE safety classification of A2L. In the United States, it is ...