Double-walled finned heat transfer tube

Details Double-walled finned heat transfer tube Double-walled finned heat transfer tube

1978-05-05

1980-11-11

Scott, Samuel

Heat exchange

Tubular structure

With discrete heat transfer means

165184, F28F 114

Patent

active

042327350

ABSTRACT:
A double-walled finned heat transfer tube is provided for use in heat exchangers. The heat transfer tube includes an inner tube inserted within an externally finned outer tube. The assembly is subjected to a crimping operation which produces radial convexities along the length of the outer tube which serve to lock the inner tube and outer tube together in intimate heat conducting relationship and which produces radial concavities between the inner and outer tubes which serve as leakage channels. The crimping operation also produces grooves in the external finned surface which improves heat transfer between the assembly and an external medium.

REFERENCES:
patent: 2365515 (1944-12-01), Baudry
patent: 2529545 (1950-11-01), Edwards

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