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

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

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate; Pages for logged out editors learn more

  4. Difluoromethane - Wikipedia

    en.wikipedia.org/wiki/Difluoromethane

    Difluoromethane is a molecule used as refrigerant that has prominent heat transfer and pressure drop performance, both in condensation and vaporization. [6] It has a 100-year global warming potential (GWP) of 675 times that of carbon dioxide, and an atmospheric lifetime of nearly 5 years. [ 7 ]

  5. 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

  6. 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.

  7. 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."

  8. Thermodynamic diagrams - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_diagrams

    The path or series of states through which a system passes from an initial equilibrium state to a final equilibrium state [1] and can be viewed graphically on a pressure-volume (P-V), pressure-temperature (P-T), and temperature-entropy (T-s) diagrams. [2] There are an infinite number of possible paths from an initial point to an end point in a ...

  9. Working fluid selection - Wikipedia

    en.wikipedia.org/wiki/Working_fluid_selection

    The choice of working fluids is known to have a significant impact on the thermodynamic as well as economic performance of the cycle. A suitable fluid must exhibit favorable physical, chemical, environmental, safety and economic properties such as low specific volume (high density), viscosity, toxicity, flammability, ozone depletion potential (ODP), global warming potential (GWP) and cost, as ...

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