C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 5/04 (2006.01) F25B 45/00 (2006.01)
Patent
CA 2244420
The present invention provides a method for charging a refrigerant blend characterized in that, in case of employing as refrigerant a non-azeotropic blend comprising 23% by weight of difluoromethane, 25% by weight of pentafluoroethane and 52% of 1,1,1,2-tetrafluoroethane, composition change associated with transfer is allow to fall within the permissible range of performance of the non-azeotropic refrigerant blend by adjusting a composition of the non-azeotropic blend in a feeding container such as bomb to 23.5-25.0% by weight of difluoromethane, 23.5-25.0% by weight of pentafluoroethane and 50.0-53.0% by weight of 1,1,12- tetrafluoroethane followed by discharging the ~ non-azeotropic blend from a liquid phase at 40°C or less. According to the charging method, composition change associated with transfer of non-azeotropic HFC32/HFC125/HFC134a refrigerant blend may be allowed to fall within the permissible range of performance of refrigerant.
Pour utiliser un mélange non azéotrope composé de HFC32 (23 % en poids), de HFC125 (25 % en poids) et de HFC134a (52 % en poids) comme agent de refroidissement, on maintient la composition du mélange dans un conteneur destiné à l'alimentation, telle une bombe, par exemple, dans les limites suivantes: de 23,5 à 25,0 % en poids de HFC32, de 23,5 à 25,0 % en poids de HFC125 et de 50,0 à 53,0 % en poids de HFC134a et on extrait ledit mélange de la phase liquide à une température de 40 DEG C maximum. Le changement de composition dû au chargement du mélange non azéotrope se maintient dans une plage acceptable de rendement de refroidissement.
Ide Satoshi
Shibanuma Takashi
Daikin Industries Ltd.
Marks & Clerk
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