Refrigeration – Processes – Circulating external gas
Patent
1984-01-31
1986-05-06
Sever, Frank
Refrigeration
Processes
Circulating external gas
62 30, 62 31, 62 34, 62 40, F25J 300
Patent
active
045869421
ABSTRACT:
This process is of the type in which there is compressed in at least two stages 2, 6 a mixture of cooling fluids composed of constituents of different volatilities and in which, after the last stage 6 and after at least an intermediate compression stage 2, the mixture is partly condensed, the condensed fractions are expanded and vaporized in heat exchange with the fluid to be cooled before being compressed again. According to the invention, at least one of the condensation stages is carried out by sending to a distillation column 7 the mixture issuing from the corresponding stage of the compressor. This enables the thermodynamic irreversibility to be decreased and consequently permits a reduction of the specific cooling energy.
REFERENCES:
patent: 3857251 (1974-12-01), Alleaume
L'Air Liquide Societe Anonyme pour l'Etude et, l'Exploitation de
Sever Frank
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