Heat-exchanger tube

Details Heat-exchanger tube Heat-exchanger tube

1994-12-13

1997-05-06

Leo, Leonard R.

Heat exchange

With protector or protective agent

165180, 165181, F28F 1900, F28F 2102

Patent

active

056261870

ABSTRACT:
A heat-exchanger tube (16) comprises a tubular body (17) and surface enlarging elements provided on said body (17) and consisting of a large number of pins (18) which are welded to the tube body (17) at the outer side thereof and which extend in outward directions from the tube body (17). The tube body (17) and the pins (18) are made of carbon steel. However, in order to reduce the risk of crack formations in the weld joints between the pins (18) and the tube body (17) or in portions of the pins (18) located adjacent to the tube body (17), the pins (18) are made of a material having a substantially lower carbon content than the material of which the tube body (17) is made.

REFERENCES:
patent: 2093686 (1937-09-01), Murray, Jr.
patent: 2566318 (1951-09-01), Dalin et al.
patent: 2719354 (1955-10-01), Dalin
patent: 3731738 (1973-05-01), Cooper
patent: 3890143 (1975-06-01), Skoglund et al.
patent: 5107798 (1992-04-01), Gerep

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