Refrigeration techniques used

Child Classifications

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• F25J 2270/02 Internal refrigeration with liquid vaporising loop
• F25J 2270/04 Internal refrigeration with work-producing gas expansion loop
• F25J 2270/08 Internal refrigeration by flash gas recovery loop
• F25J 2270/12 External refrigeration with liquid vaporising loop
• F25J 2270/14 External refrigeration with work-producing gas expansion loop
• F25J 2270/18 External refrigeration with incorporated cascade loop
• F25J 2270/20 Quasi-closed internal or closed external hydrogen refrigeration cycle
• F25J 2270/24 Quasi-closed internal or closed external carbon monoxide refrigeration cycle
• F25J 2270/30 Quasi-closed internal or closed external helium refrigeration cycle
• F25J 2270/40 Quasi-closed internal or closed external air refrigeration cycle
• F25J 2270/42 Quasi-closed internal or closed external nitrogen refrigeration cycle
• F25J 2270/50 Quasi-closed internal or closed external oxygen refrigeration cycle
• F25J 2270/58 Quasi-closed internal or closed external argon refrigeration cycle
• F25J 2270/60 Closed external refrigeration cycle with single component refrigerant [SCR], e.g. C1-, C2- or C3-hydrocarbons
• F25J 2270/66 Closed external refrigeration cycle with multi component refrigerant [MCR], e.g. mixture of hydrocarbons
• F25J 2270/80 Quasi-closed internal or closed external carbon dioxide refrigeration cycle
• F25J 2270/88 Quasi-closed internal refrigeration or heat pump cycle, if not otherwise provided
• F25J 2270/90 External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration