Heat-exchanger tube for condensing of vapor

Details Heat-exchanger tube for condensing of vapor Heat-exchanger tube for condensing of vapor

1996-11-06

1998-07-07

Leo, Leonard R.

Heat exchange

With coated, roughened or polished surface

165184, 165DIG515, 165DIG525, F28F 134

Patent

active

057754110

ABSTRACT:
The invention relates to a metallic heat-exchanger tube (1) with fins (2) which annularly or helically extend or rather extend in axial direction on the outside of the tube for condensing of vapor from pure substances or mixtures on the outside of the tube. To improve the condensation performance by effecting a thinning of a liquid film, the invention includes a making of the fins so that they have a constant fin height H throughout, with the fin flanks (4) being structured by spaced-apart depressions.

REFERENCES:
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patent: 4753833 (1988-06-01), Fishgal et al.
patent: 5333682 (1994-08-01), Liu et al.
patent: 5377746 (1995-01-01), Reid et al.

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