Multicomponent refrigerant fluids for low and cryogenic temperatures

US6881354B2 · kind B2 · utility

Assignee

• Praxair Technology, Inc. · US

Inventors

• Bayram Arman · Grand Island, US
• Neil M. Prosser · Lockport, US
• M. Abdul-Aziz Rashad · Kenmore, US
• Henry Edward Howard · Grand Island, US

Key dates

• Filing date: Jul 24, 2002
• Grant date: Apr 19, 2005
• Expiry date: Sep 25, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F25B2400/23
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Multicomponent refrigerant fluids for generating refrigeration, especially over a wide temperature range including cryogenic temperatures, which are advantageous over conventional refrigerant fluids especially for certain applications, and which are non-toxic, non-flammable and low or non-ozone-depleting and preferably are maintained in variable load form through compression, cooling, expansion and warming steps in a refrigeration cycle.