Abstract: An environmentally friendly hydrocarbon refrigerant mixture may be used as a substitute for existing refrigerant in a refrigerant system. The hydrocarbon refrigerant mixture offers greater operating efficiency and effectively replaces chlorofluorocarbon refrigerants. The refrigerant mixture for the refrigeration system includes from about 85% to about 89% by weight propane and from about 11% to about 15% by weight propene.

Abstract: A method and apparatus for cleaning objects in an automatic cleaning appliance is provided that includes the steps of introducing a load of objects into a wash zone of the automatic cleaning appliance, applying a wash liquor and at least one of electromagnetic, chemical and mechanical energy to the load of objects in the wash zone to remove soil from the load of objects, and subsequently applying an oxidizing agent to the load of objects through the medium of a fluid applied to the load of objects. The oxidizing agent may be generated in association with the automatic cleaning appliance.

Abstract: A refrigerant mixture. The mixture of propane and butane may be advantageously used as a substitute for R-12, thus eliminating the use of ozone depleting R-12 refrigerant. Ideally, the mixture is comprised of approximately 50% propane and 50% butane by liquid volume. Alternately, the mixture may contain up to about 75% of either propane or butane. A refrigeration process utilizing the mixture is also disclosed.