EP 1046869 A1 20001025 - Refrigeration/air conditioning system
Title (en)
Refrigeration/air conditioning system
Title (de)
Kühl- und Klimatisierungssystem
Title (fr)
Système de réfrigération et d'air conditionné
Publication
Application
Priority
- EP 00303315 A 20000419
- EP 99303027 A 19990420
Abstract (en)
A two-phase mechanical refrigeration system, particularly suitable for operation in accordance with the carbon dioxide trans-critical cycle, utilises energy produced on expansion to pre-compress refrigerant returning to a primary compressor (21), thereby improving the overall performance and efficiency of the system and of the primary compressor (21). The system finds application in refrigeration and air conditioning systems, and in heat pumps.
Gaseous carbon dioxide is compressed in a compressor (21) to a pressure and temperature above the critical point. The high pressure gas then enters the gas cooler (22), where its temperature is reduced while maintaining its pressure constant. The gas then enters an expander (23) where the gas is expanded to a lower intermediate pressure and temperature resulting in a formation of a gas/liquid mixture. The mixture enters a combined gas separator/liquid accumulator (24) which separates the gaseous portion of the mixture for recycling prior to the primary compressor and directs the liquid portion to an evaporator (26).
IPC 1-7
IPC 8 full level
F25B 1/10 (2006.01); F25B 9/00 (2006.01); F25B 11/02 (2006.01); F25B 40/00 (2006.01)
CPC (source: EP)
F25B 1/10 (2013.01); F25B 9/008 (2013.01); F25B 11/02 (2013.01); F25B 40/00 (2013.01); F25B 2309/061 (2013.01); F25B 2400/13 (2013.01); F25B 2400/23 (2013.01)
Citation (search report)
- [YA] US 2494120 A 19500110 - FERRO JR BERNARDO J
- [Y] US 4896515 A 19900130 - ENDOU HAJIME [JP]
- [A] EP 0030636 A2 19810624 - HUGHES AIRCRAFT CO [US]
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 00303315 A 20000419