| US 7,574,874 B2 | ||
| Vapor compression heat pump system | ||
| Kåre Aflekt, Trondheim (Norway); Armin Hafner, Tronheim (Norway); Arne Jakobsen, Trondheim (Norway); Petter Nekså, Trondheim (Norway); Jostein Pettersen, Trondheim (Norway); Håvard Rekstad, Trondheim (Norway); Geir Skaugen, Trondheim (Norway); Trond Andresen, Trondheim (Norway); Espen Tøndell, Trondheim (Norway); and Munan Elgæther, Trondheim (Norway) | ||
| Assigned to Sinvent AS, Trondheim (Norway) | ||
| Appl. No. 10/540,202 PCT Filed Dec. 17, 2003, PCT No. PCT/NO03/00424 § 371(c)(1), (2), (4) Date Feb. 14, 2006, PCT Pub. No. WO2004/057245, PCT Pub. Date Jul. 08, 2004. |
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| Claims priority of application No. 20026233 (NO), filed on Dec. 23, 2002. | ||
| Prior Publication US 2006/0137387 A1, Jun. 29, 2006 | ||
| Int. Cl. F25B 41/00 (2006.01) | ||
| U.S. Cl. 62—513 [62/197] | 14 Claims |
| 1. A compression refrigeration system configured for use with a refrigerant containing carbon dioxide, the system comprising:
a compressor;
a heat rejector;
a first expansion unit;
a heat absorber; and
a stream splitting arrangement extending from the heat rejector at a high pressure side thereof and including a second expansion
unit;
wherein the compressor, the heat rejector, the first expansion unit, the heat absorber and the stream splitting arrangement
are connected in a closed circulation circuit that is configured to operate with supercritical high-side pressure; and
wherein the stream splitting arrangement is configured to generate a split stream flow to control superheating of compressor
suction gas and further configured to expand the split stream flow from the high pressure side of the heat rejector through
the second expansion unit directly to a low pressure side of the heat absorber after heating the compressor suction gas.
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