Hydrofluorocarbon refrigerant compositions for heat pump...

C - Chemistry – Metallurgy – 09 – K

Patent

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C09K 5/04 (2006.01)

Patent

CA 2761478

Hydrofluorocarbon refrigerant compositions enable the use of existing compressor technologies in heat pump water heaters in a reliable (low discharge temperatures and pressures) and efficient (high capacity and efficiency) manner. The refrigerant comprises blends of pentafluoroethane (HFC-125), difluoromethane (HFC-32), tetrafluoroethane (HFC-134a) and tetrafluoropropene (HFO-1234ze).

La présente invention concerne des compositions de frigorigènes hydrofluorocarbonés permettant l'utilisation des technologies de compresseur existantes dans des chauffe-eau à pompe à chaleur, de façon fiable, c'est-à-dire avec de faibles pressions et températures de décharge, et de façon efficace, c'est-à-dire avec une capacité et un rendement élevés. Cette composition comprend des mélanges de pentafluoroéthane (HFC-125), de difluorométhane (HFC-32), de tétrafluoroéthane (HFC-134a) et de tétrafluoropropène (HFO-1234ze).

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