Metal tube having internal passages therein

Details Metal tube having internal passages therein Metal tube having internal passages therein

1974-03-25

1976-11-16

Davis, Jr., Albert W.

Heat exchange

Three non-communicating fluids

138115, 165169, F28D 710

Patent

active

039918220

ABSTRACT:
A heat exchanger tube, and a method and apparatus for forming a heat exchanger tube are disclosed. The tube is formed from a metal strip having inflatable passages. The passages are inflated after the tube is formed. In use, one fluid flows through the tube and at least one fluid flows through the wall passages. Another fluid, contacting the exterior of the tube, may be employed.

REFERENCES:
patent: 2626130 (1953-01-01), Raskin
patent: 2914091 (1959-11-01), Barnes et al.
patent: 3004330 (1961-10-01), Wilkins
patent: 3173479 (1965-03-01), Heuer
patent: 3335789 (1967-08-01), Raskin

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