F - Mech Eng,Light,Heat,Weapons – 25 – D
Patent
F - Mech Eng,Light,Heat,Weapons
25
D
62/127
F25D 9/00 (2006.01) F01D 25/02 (2006.01) F25B 9/00 (2006.01) F25B 11/02 (2006.01)
Patent
CA 1293866
(57) ABSTRACT OF THE DISCLOSURE This publication describes a method and apparatus for the utilization of heat energy released in a cooling process. In accordance with the method, air used as the heat transfer medium is routed to a compressor (2) in which compressor (2) the air is compressed to a higher pressure, the compressed air is cooled to a lower temperature, the cooled air is routed to a turbine (8), where it expands to a lower pressure and cools down, and air expansion work released in the turbine (8) is used for rotating the compressor (2). In accordance with the invention, air is compressed in the compressor (2) to such a high pressure that its temperature exceeds a minimum temperature of water boiling point in normal atmospheric pres- sure, the high-pressure compressed air is cooled to a suffi- ciently low temperature, e.g., below 15 °C, by means of at least one heat exchanger (4, 6) in order to prevent freezing in the turbine (8); the heated medium from the secondary cir- cuit of the heat exchanger (4, 6) is utilized as such, e.g. as hot water, and air is routed from the turbine (8) as such, to the object to be cooled. The method allows the use of the heating medium as such for cooling purposes.
528495
Imatran Voima Oy
Swabey Ogilvy Renault
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