The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 1997
Filed:
Feb. 28, 1996
Brian C Price, Overland Park, KS (US);
The Pritchard Corporation, Overland Park, KS (US);
Abstract
An improved closed loop single mixed refrigerant process and system for cooling a fluid material through a temperature range exceeding 200.degree. F. by heat exchange with a single mixed refrigerant in a closed loop refrigeration cycle comprising: compressing the mixed refrigerant in a first stage compressor; cooling the compressed mixed refrigerant from the first stage compressor to produce a first mixture of a first condensed portion of the mixed refrigerant, and a gaseous refrigerant; separating the first condensed portion of the mixed refrigerant from the gaseous refrigerant; passing the gaseous refrigerant to a second stage compressor and further compressing the gaseous refrigerant; cooling the second stage compressed gaseous refrigerant to produce a second mixture of a second condensed portion of the gaseous refrigerant and a second gaseous refrigerant; separating the second condensed portion of the gaseous refrigerant and the second gaseous refrigerant; combining the first condensed portion of the mixed refrigerant with the second condensed portion of the gaseous refrigerant and the second gaseous refrigerant; charging the compressed mixed refrigerant to a refrigeration zone where the compressed mixed refrigerant is cooled to produce a liquid, mixed refrigerant, and expanded to produce a low temperature coolant; passing the low temperature coolant in countercurrent heat exchange with the compressed mixed refrigerant and the fluid material to produce the liquid, mixed refrigerant, a cooled, liquid, fluid material and gaseous mixed refrigerant; and recycling the gaseous mixed refrigerant to the first stage compressor.