| 摘要 |
The system comprises an inner tube 1 via which the liquid to be cooled circulates, an outer tube 2 which is concentric with the previous one and which with that one defines a cavity 3 via which a cooled liquid circulates, and two devices intended to close the ends of the cavity 3, allowing the exit via said ends of the ends of the inner tube 1; in said devices there are openings 4a for the coupling of an outer tube 8 which passes through refrigeration equipment 9 and which, together with the cavity 3, forms a closed circuit via which the cooled fluid circulates. <IMAGE>
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