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  2. R-407C - Wikipedia

    en.wikipedia.org/wiki/R-407C

    R-407C is a mixture of hydrofluorocarbons used as a refrigerant. It is a zeotropic blend of difluoromethane (R-32), pentafluoroethane (R-125), and 1,1,1,2-tetrafluoroethane (R-134a). Difluoromethane serves to provide the heat capacity, pentafluoroethane decreases flammability, tetrafluoroethane reduces pressure. [ 1 ]

  3. Refrigerant - Wikipedia

    en.wikipedia.org/wiki/Refrigerant

    Refrigerant. A refrigerant is a working fluid used in the refrigeration cycle of air conditioning systems and heat pumps where in most cases they undergo a repeated phase transition from a liquid to a gas and back again. Refrigerants are heavily regulated because of their toxicity and flammability and the contribution of CFC and HCFC ...

  4. 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.

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  6. Chlorodifluoromethane - Wikipedia

    en.wikipedia.org/wiki/Chlorodifluoromethane

    The energy efficiency and system capacity of systems designed for R-22 is slightly greater using R-22 than the available substitutes. [11] R-407A is for use in low- and medium-temp refrigeration. Uses a polyolester (POE) oil. R-407C is for use in air conditioning. Uses a minimum of 20 percent POE oil.

  7. R-407A - Wikipedia

    en.wikipedia.org/wiki/R-407A

    R-407A is a mixture of gasses used as a refrigerant.It is a zeotropic blend of difluoromethane (HFC-32), pentafluoroethane (HFC-125) and 1,1,1,2-tetrafluoroethane (HFC-134a). R-407A was developed as a close match to R-22's capacities and flow rates, making it well suited as an energy efficient retrofit for R-22 in medium and low temperature refrigeration systems for supermarket and food ...

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  9. Kalthoff repeater - Wikipedia

    en.wikipedia.org/wiki/Kalthoff_repeater

    Kalthoff guns using cylindrical breeches were also made by Jan Flock of Utrecht, some of which he advertised for sale in 1668. [1] The price per weapon was at least 260 fl. [1] Caspar Kalthoff the younger, the son of Caspar Kalthoff, made repeating weapons in Russia. [17]

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