High performance heat transfer tube and method of making same

Details High performance heat transfer tube and method of making same High performance heat transfer tube and method of making same

1989-08-18

1990-05-01

Cohan, Alan

Heat exchange

Tubular structure

Projecting internal and external heat transfer means

165133, F28F 142

Patent

active

049210424

ABSTRACT:
A high performance heat transfer tube for use in the condenser for 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: 3847212 (1974-11-01), Withers, Jr. et al.
patent: 4059147 (1977-11-01), Thorne
patent: 4425696 (1984-01-01), Torniainen
patent: 4438807 (1984-03-01), Mathur et al.
patent: 4546819 (1985-10-01), O'Connor
patent: 4660630 (1987-04-01), Cunningham et al.

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