Refractory heat exchange tube

Details Refractory heat exchange tube Refractory heat exchange tube

1989-06-15

1990-08-28

Lazarus, Ira S.

Heat exchange

Tubular structure

With discrete heat transfer means

165905, 29890048, F28F 114

Patent

active

049517422

ABSTRACT:
A finned heat exchange tube is made from a refractory metal such as titanium, titanium alloy, stainless steel, and iron-nickel alloy containing more than 10% nickel, by rolling into the outer surface of a tube of said metal integral fins having a low fin height of less than 0.045 inch (preferably less than 0.033 inch in titanium and less than 0.045 inch for stainless and the iron-nickel alloys), a high fin density of at least 26 fins per inch of tube length (preferably from 27 to 30 fins per inch), and a high fin surface area per unit length of tube which is at least 2.4 times greater than the comparable surface area of the tube prior to finning. The thickness of the tube wall underneath the finned area preferably is made less than the height of the fins.

REFERENCES:
patent: 3500902 (1970-03-01), Habdas
patent: 3693713 (1972-09-01), Stahl
patent: 3696861 (1972-10-01), Webb
patent: 3731738 (1973-05-01), Cooper
patent: 3795125 (1974-03-01), Laing et al.

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