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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. Pentafluoroethane - Wikipedia

    en.wikipedia.org/wiki/Pentafluoroethane

    Pentafluoroethane in a near azeotropic mixture with difluoromethane is known as R-410A, a common replacement for various chlorofluorocarbons (commonly known as Freon) in new refrigerant systems. Fire suppression systems

  4. List of refrigerants - Wikipedia

    en.wikipedia.org/wiki/List_of_refrigerants

    Refrigerant concentration limit / immediately dangerous to life or health in parts per million (volume per volume) and grams per cubic meter Molecular mass in atomic mass units Normal boiling points for pure substances, bubble and dew points for zeotropic blends, or normal boiling point and azeotropic temperature for the azeotropic blends, at ...

  5. Difluoromethane - Wikipedia

    en.wikipedia.org/wiki/Difluoromethane

    Difluoromethane is thus a relatively low-risk choice among HFC refrigerants, most of which have higher GWP and longer persistence when leaks occur. The common refrigerant R-410A is a zeotropic , 50/50-mass-percent mixture of difluoromethane and pentafluoroethane ( R-125 ).

  6. How hot is too hot for humans? Local physician tells how ...

    www.aol.com/lifestyle/hot-too-hot-humans-local...

    For premium support please call: 800-290-4726 more ways to reach us

  7. Refrigerant - Wikipedia

    en.wikipedia.org/wiki/Refrigerant

    A refrigerant needs to have: a boiling point that is somewhat below the target temperature (although boiling point can be adjusted by adjusting the pressure appropriately), a high heat of vaporization, a moderate density in liquid form, a relatively high density in gaseous form (which can also be adjusted by setting pressure appropriately), and ...

  8. Southern states declare emergencies ahead of potentially ...

    www.aol.com/coldest-wind-chills-years-threaten...

    The already serious cold is made more dangerous by gusty winds, which are bringing dangerous wind chills to millions. The wind chill hit 57 degrees below zero in Rolla, North Dakota, Monday morning.

  9. What Is Wind Chill And What Makes It So Dangerous? - AOL

    www.aol.com/news/wind-chill-makes-dangerous...

    To avoid frostbite, the best thing to do is stay inside when it's bitterly cold. If you have to be outside, you should cover every part of your body, including your ears, nose, toes and fingers.

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