The main characteristics of elliptical spiral finned tube:
Medium flow pipe 1, different. From the circular tube "flow" to the elliptic tube "turbulence" flow pattern change, so in the same conditions enhanced heat transfer.
2, along the direction of the long axis of the elliptic tube air resistance is obviously reduced, leeward reduce eddy current corresponding to the increase of heat transfer area.
3, segments are welded into a whole after peeling off and ensure the best heat transfer effect.
4, in the same material, structure, working conditions, than the circular finned tube heat transfer coefficient increases 19%-32%, heat 16%-4%, improve the air side pressure drop is a circular finned tube 38%---43% elliptic high-frequency welded spiral finned tube.