Title:
POLYHEDRAL ARRAY HEAT TRANSFER TUBE
Document Type and Number:
WIPO Patent Application WO2000026598
Kind Code:
A3
Abstract:
A heat exchanger tube (10) having an internal surface (13) that is configured to enhance the heat transfer performance of the tube (10). The internal enhancement has a plurality of polyhedrons (19) extending from the inner wall of the tubing (10). The polyhedrons (19) have first planar face (22) and second planar face (25) disposed substantially parallel to the polyhedral axis. The polyhedrons (19) have third face (28) and fourth face (31) disposed at an angle oblique to the longitudinal axis of the tube (10). The resulting surface increases the internal surface area of the tube and the turbulence characteristics of the surface (13), and thus, increases the heat transfer performance of the tube (10).
Inventors:
BENNETT DONALD L
TANG LIANGYOU
TANG LIANGYOU
Application Number:
PCT/US1999/025732
Publication Date:
August 10, 2000
Filing Date:
November 01, 1999
Export Citation:
Assignee:
OUTOKUMPU COPPER FRANKLIN INC (US)
International Classes:
F28F1/40; (IPC1-7): F28F13/18; F28F1/00; F28F1/14; F28F1/20; F28F1/30; F28F1/42
Foreign References:
| US5332034A | 1994-07-26 | |||
| US4658892A | 1987-04-21 | |||
| US5259448A | 1993-11-09 | |||
| US4733698A | 1988-03-29 | |||
| US5070937A | 1991-12-10 |
Other References:
See also references of EP 1137905A4
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