Flexible insert for heat pipe freeze protection

Details Flexible insert for heat pipe freeze protection Flexible insert for heat pipe freeze protection

F - Mech Eng,Light,Heat,Weapons

28

F

F28F 17/00 (2006.01) E03B 7/10 (2006.01) F28D 15/02 (2006.01) F28F 19/00 (2006.01)

Patent

CA 2190824

A flexible, pressurized insert for insertion within the hot (evaporator) side of an inclined heat pipe that forms a part of a heat pipe heat exchanger. This insert is employed in order to prevent such heat pipe from rupturing in the event the working fluid contained therein freezes. This insert is constructed of a thin-walled flexible material that is capable of being deformed (i.e. compressed) thereby absorbing the expansion pressures exerted by the working fluid should the working fluid freeze or be exposed to freezing temperatures. By such absorption, the outer heat pipe itself will not be over-pressurized which might otherwise lead to its rupture. Upon the thawing of the working fluid, the pressurized insert (which is at a pressure greater than that of the working fluid in its non-frozen state) will once again regain its shape.

Élément rapporté pressurisé, flexible, destiné à être inséré dans le côté chaud (évaporateur) d'un caloduc incliné, faisant partie d'un échangeur thermique du type caloduc. Cet élément rapporté est utilisé de manière à empêcher que le dit caloduc éclate si le fluide qu'il renferme gèle. La pièce rapportée est construite en matériau flexible à paroi mince qui peut subir une déformation (p. ex. comprimé), absorbant ainsi les pressions d'expansion exercées par le fluide caloporteur si ce fluide venait à geler ou à être exposé à des températures de congélation. En absorbant ainsi la pression, le caloduc extérieur ne sera pas soumis à une pression excessive qui autrement entraînerait sa rupture. Lorsque le fluide caloporteur gèle, l'élément rapporté pressurisé (il est à une pression supérieure à celle du fluide caloporteur à l'état non gelé) reprend sa forme.

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