Title:
FINNED HEAT EXCHANGE TUBE AND PROCESS FOR FORMING SAME
Document Type and Number:
WIPO Patent Application WO2002018847
Kind Code:
A3
Abstract:
A finned heat exchange tube (10) includes a metal cylindrical central tube (11) having an outer surface (13) and a metal fin (12) helically disposed on and in thermally conductive contact with the outer surface (13) of the tube (10). The cross-section of the fin (12) is trapezoidal in shape, with a longer (B1) and a shorter base (B2), the longer base (B1) being in contact with the outer surface (13) of the tube (10). Alternatively, the fin (21) can have a cross-section substantially rectangular in shape, having rounded corners and sides of longer and shorter dimensions perpendicular to one another, a side of the shorter dimension being in contact with the outer surface (13) of the tube (20). A process for forming a heat exchanger tube (1) comprises helically winding and securing a metal fin (12) on an outer surface (13) of a metal cylindrical central tube (11). The fin (12,21), which is in thermally conductive contact with the central tubE (11), has a cross-section that can be trapezoidal or substantially rectangular in shape.
Inventors:
FIJAS DAVID F
Application Number:
PCT/US2001/027255
Publication Date:
October 03, 2002
Filing Date:
August 31, 2001
Export Citation:
Assignee:
API HEAT TRANSFER INC (US)
International Classes:
F28F1/36; (IPC1-7): F28F1/36
Domestic Patent References:
| WO1997025577A1 | 1997-07-17 |
Foreign References:
| US2440803A | 1948-05-04 | |||
| US3047712A | 1962-07-31 |
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