Patent ID: 7574874
Filing Date: 2009-08-18
Classification: F25B

Abstract:
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.