Heat transfer device having an augmented wall surface

Details Heat transfer device having an augmented wall surface Heat transfer device having an augmented wall surface

1980-09-15

1983-09-06

Cline, William R.

Heat exchange

With leakage collector

165133, 165179, 138 38, 138121, 138172, F28F 110

Patent

active

044023596

ABSTRACT:
A heat transfer device having an augmented surface is disclosed. The device comprises a base wall of heat conductive material having a plurality of pyramid-fins formed integrally with the surface of the base wall. The pyramid-fins are regularly spaced apart in the range of about 80-500 pyramid-fins per square inch and have a height in the range of 0.015 to 0.040 inch. The base wall is preferably a cylindrical tube and the pyramid-fins are formed as a knurled diamond pattern around the outside periphery of the tube.

REFERENCES:
patent: 3768291 (1973-10-01), Rieger
patent: 3830290 (1974-08-01), Thamasett et al.
patent: 3861462 (1975-01-01), McLain
patent: 3906605 (1975-09-01), McLain
patent: 4044797 (1977-08-01), Fujie et al.
patent: 4118944 (1978-10-01), Lord et al.

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