Heat exchanger tubing with yarn turbulator

Details Heat exchanger tubing with yarn turbulator Heat exchanger tubing with yarn turbulator

1998-04-14

2000-12-19

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

29890053, 1651091, B29C 4702, F28F 1312

Patent

active

061623172

ABSTRACT:
A process and the product thereof, wherein thermoplastic tubing for use in a heat exchanger is extruded with a multifilament yarn inside to act as a turbulator. The extrusion is started with a small rod or a lead-in wire pushing the end of the yarn through the die into the tubing to a place where it adheres to the inner wall of the tubing as it is cooling, then the yarn is pulled into the tubing as it is extruded. The part of the tubing with the lead-in wire is cut off, leaving tubing with efficient turbulation.

REFERENCES:
patent: 3303251 (1967-02-01), Heider et al.
patent: 4395210 (1983-07-01), Hama
patent: 4923004 (1990-05-01), Fletcher et al.
patent: 5601775 (1997-02-01), Cunningham et al.

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