Compression system for cooling and heating purposes

US7131291B2 · kind B2 · utility

Assignee

• Sinvent AS · NO

Inventors

• Kare Aflekt · Trondheim, NO
• Arne Jakobsen · Trondheim, NO
• Jostein Pettersen · Trondheim, NO
• Geir Skaugen · Trondheim, NO
• Armin Hafner · Trondheim, NO
• Petter Neksa · Trondheim, NO
• Havard Rekstad · Trondheim, NO
• Gholam Reza Zakeri · Bad Vilbel, DE

Key dates

• Filing date: Jul 26, 2002
• Grant date: Nov 7, 2006
• Expiry date: Feb 27, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F25B2400/16
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A compression refrigeration system includes a compressor (1), a heat rejector (2), expansion device (3) and a heat absorber (4) connected in a closed circulation circuit that may operate with supercritical high-side pressure. The refrigerant charge and component design of the system corresponds to a stand still pressure inside the system which lower than 1.26 times the critical pressure of the refrigerant when the temperature of the whole system is equalized to 60° C. Carbon dioxide or a mixture of a refrigerant containing carbon dioxide may be applied as the refrigerant in the system.