Fluid conduit wall inhibiting heat transfer and method for...

Details Fluid conduit wall inhibiting heat transfer and method for... Fluid conduit wall inhibiting heat transfer and method for...

2005-02-15

2005-02-15

Brinson, Patrick (Department: 3754)

Pipes and tubular conduits

Plural duct

Coaxial

C138S148000, C138S145000, C138S146000, C428S432000

Reexamination Certificate

active

06854487

ABSTRACT:
A fluid conduit wall enclosing a hollow interior for the flow of fluid includes an outer surface provided with a low emissivity coating having a coating emissivity of less than 0.2 and a thickness at least sufficient to provide the coating emissivity. One embodiment provides a fluid conduit with multiple spaced-apart walls. An outer surface of an inner wall of a first member and an inner surface of an outer wall of a second member define a gap therebetween. At least one of such surfaces includes the low emissivity coating. A method for providing such coating deposits the coating, for example by reactive vaporization, concurrently on both surfaces from within the gap after assembly of the members.

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