Method of making a high performance, uniform fin heat transfer t

Details Method of making a high performance, uniform fin heat transfer t Method of making a high performance, uniform fin heat transfer t

1987-10-21

1989-09-19

Echols, P. W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291573AH, 72 96, 72 98, 165133, 165179, B23P 1526

Patent

active

048668303

ABSTRACT:
A high performance heat transfer tube for use in the condenser of an air conditioning or refrigeration system is formed on a grooved mandrel which has a sufficient number of grooves i.e., thirty six to forty eight, with a suitable helix angle, such as thirty degrees, and a sufficiently small pitch, such as 0.10 inches or less, so that a Moire imprint is avoided in the external fin enhancement. This makes the fin height uniform over the exterior of the tube, which results in an increase in condenser efficiency.

REFERENCES:
patent: 3217799 (1965-11-01), Rodgers
patent: 3559437 (1971-02-01), Withers, Jr.
patent: 3847212 (1974-11-01), Withers, Jr. et al.
patent: 4044797 (1977-08-01), Fujie et al.
patent: 4425696 (1984-01-01), Torniainen
patent: 4660630 (1987-04-01), Cunningham et al.

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