| abstract |
A refrigeration system comprising at least one refrigeration cycle having a mixed component refrigerant free of chlorofluorocarbons, hydrochlorofluorcarbons, fluorocarbons, hydrofluorocarbons, fluoroethers, and hydrocarbons and comprising at least 5 mol% of each of at least three distinct components selected from a group consisting of Ar, N 2 , Kr, Ne, Xe, He, 0 2 , C0 2 and N 2 0, wherein at least one of the at least three distinct components is selected from a group consisting of Kr, Xe and N 2 0. |