Finned heat exchanger tubing with varying wall thickness

Details Finned heat exchanger tubing with varying wall thickness Finned heat exchanger tubing with varying wall thickness

F - Mech Eng,Light,Heat,Weapons

28

F

26/146, 257/27

F28F 1/08 (2006.01) B21D 31/00 (2006.01) F28F 1/04 (2006.01) F28F 1/26 (2006.01)

Patent

CA 1289131

Abstract of the Disclosure A heat transfer unit includes an elongated finned tubular element bent in a serpentine pattern with the thickness of the wall of the tubular member made greater at return bend portions than at cross portions either by more shallow cutting of the rib material from which the fins are formed at the return bend portions than at the cross portions, or by crimping the tubular member at the return bend portions prior to cutting the fins so that a portion of the rib material from which the fins are cut is compressed inwardly on both sides of the tubular member to increase the wall thickness of tube material at the return bend portions.

565524

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