B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
26/146
B21D 53/02 (2006.01) B21C 37/26 (2006.01) F28F 1/36 (2006.01)
Patent
CA 1243476
METHOD OF MAKING A SEGMENTED EXTERNALLY FINNED HEAT EXCHANGER TUBE Abstract A method of making a segmented externally finned tube with at least one fin free area for use in a heat exchanger. The method includes the steps of providing a tape of thermally conductive material with spaced reliefs along one longitudinal edge thereof and slitting the tape from that edge partially across its length between the reliefs. The slit portions of the tape are bent to form an angle with respect to the remainder of the tape which is then used to helically wrap a thermally conductive tube. The area of the reliefs provide fin free areas.
488824
Riches Mckenzie & Herbert Llp
Sundstrand Heat Transfer Inc.
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