A heat exchanger

Details A heat exchanger A heat exchanger

F - Mech Eng,Light,Heat,Weapons

28

D

F28D 7/08 (2006.01) F28F 9/00 (2006.01) F28F 9/013 (2006.01) F28F 9/02 (2006.01)

Patent

CA 2403783

A heat exchanger comprising a pressure vessel (1). A plurality of serpentines (8) convey a fluid to be heated through the pressure vessel (1) in one direction. A duct (9) surrounding the serpentines (8) conveys a second fluid in the opposite direction to give up its heat to the first fluid. The duct (9) is spaced from the pressure vessel (1) and is surrounded with thermal insulation (23). An opening in the duct (9) equalises the pressure between the inside and the outside of the duct (9) which is also supported against expansion caused by the pressure inside the duct (9) exceeding the pressure outside the duct (9).

Echangeur de chaleur qui comporte une cuve (1) à pression. Une pluralité de serpentins (8) transporte du fluide à chauffer à travers la cuve (1) à pression dans un sens. Un conduit (9) entourant les serpentins (8) transporte un second fluide dans le sens opposé pour transférer sa chaleur au premier fluide. Le conduit (9) est espacé de la cuve (1) à pression et est entouré par un isolant thermique (23). Une ouverture dans le conduit (9) équilibre la pression entre l'intérieur et l'extérieur du conduit (9) qui est également renforcé pour résister à la dilatation provoquée par la pression à l'intérieur du conduit (9), supérieure à la pression à l'extérieur dudit conduit (9).

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