Refrigeration application Short descriptions Typical refrigerants used Domestic refrigeration Appliances used for keeping food in dwelling units R-600a, R-134a, R-22, Commercial refrigeration Holding and displaying frozen and fresh food in retail outlets R-134a, R-404A, R-507 Food processing and cold storage Equipment to preserve, process and store food from its source to the wholesale distribution point R-123, R-134a, R-407C, R-410A, R-507 Industrial refrigeration Large equipment, typically 25 kW to 30 MW, used for chemical processing, cold storage, food processing, building and district heating and cooling R-123, R-134a, R-404A, R-407C, R-507, R-717 Transport refrigeration Equipment to preserve and store goods, primarily foodstuffs, during transport by road, rail, air and sea R-134a, R-407C, R-410A Electronic cooling Low-temperature cooling of CMOS circuitry and other components in large computers and servers[5] R-134a, R-404A, R-507 Medical refrigeration R-134a, R-404A, R-507 Cryogenic refrigeration Ethylene, Propane, Nitrogen, Helium