Food freezing method using a multicomponent refrigerant

US6327866A · kind A · utility

Assignee

• Praxair Technology, Inc. · US

Inventors

• Richard A. Novak · Naperville, US
• Gary D. Lang · Wooster, US
• Arun Acharya · East Amherst, US
• John Henri Royal · Grand Island, US
• Kenneth Kai Wong · Amherst, US
• Bayram Arman · Grand Island, US

Key dates

• Filing date: Jun 28, 2000
• Grant date: Dec 11, 2001
• Expiry date: Jun 28, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F25B2400/12
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A method for providing refrigeration, such as to an insulated enclosure for food freezing, wherein a defined hydrocarbon-containing multicomponent refrigerant fluid undergoes a phase change coupled with Joule-Thomson expansion to generate refrigeration over a wide temperature range which may comprise from ambient to low temperatures.