Inner finned heat exchanger tube

Details Inner finned heat exchanger tube Inner finned heat exchanger tube

1977-08-01

1979-05-15

Scott, Samuel

Heat exchange

Tubular structure

Projecting internal and external heat transfer means

165183, 165184, 138 38, 291573H, F28F 140

Patent

active

041542967

ABSTRACT:
The present invention relates to an inner finned tube particularly suitable for use in a continuous plate-finned heat exchanger. The plate fins are spaced apart along the tube in heat exchange relation therewith. An elongated cylindrical tube is provided with a plurality of integrally formed and radially disposed inner fins projecting toward the axial center line of the tube. Each fin in cross section is formed having a truncated triangular base and a rectangular portion extending toward the axial center line of the tube. The number of equally spaced formed fins is equal to 2.pi./.theta., where .theta. is the angle subtended between the center lines of two adjacent fins and may vary between 0.45 and 0.345 radian. The radial height of each fin may vary between 14 to 20% of the internal diameter of the tube.

REFERENCES:
patent: 2733908 (1956-02-01), Graham
patent: 3493041 (1970-02-01), Hourwitz et al.
patent: 3528494 (1970-09-01), Levedahl
patent: 3887004 (1975-06-01), Beck

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