Multiple finned tube and a method for its manufacture

Details Multiple finned tube and a method for its manufacture Multiple finned tube and a method for its manufacture

1995-06-06

1998-09-08

Flanigan, Allen J.

Heat exchange

Tubular structure

With discrete heat transfer means

72 98, 29890048, 165DIG525, F28F 116, F28F 134

Patent

active

058031642

ABSTRACT:
A metallic finned tube having multiple fins integrally formed on and extending helically on an outside of the tube. The fins number at least four and begin at fin run start locations spaced evenly about a circumference of the tube, with at least one group of side-by-side helical fins being formed which begin at substantially the same circumferential fin run start location on the tube exterior.

REFERENCES:
patent: 1865575 (1932-07-01), Locke
patent: 3327512 (1967-06-01), Novak et al.
patent: 3383893 (1968-05-01), Counts
patent: 3481394 (1969-12-01), Withers
patent: 3855832 (1974-12-01), Novak
patent: 4692978 (1987-09-01), Cunningham et al.
Electrical Review, vol. 203 No. 6, 11 Aug. 1978, p. 23, showing ribbed heat exchanger tubes.

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