Production of heat transfer element

Details Production of heat transfer element Production of heat transfer element

1994-02-22

1996-01-09

Lusignan, Michael

Coating processes

Spray coating utilizing flame or plasma heat

Metal or metal alloy coating

427191, 427192, 427424, 427427, 427456, B06D 108

Patent

active

054827442

ABSTRACT:
A heat transfer element (2) for use in boiling a liquid is produced by spraying a substrate, such as a heat exchanger tube, with a plasma of liquified metal particles and concurrently spraying the substrate with liquid carbon dioxide to provide a cooling effect. Preferably the metal particle spray (4) and the carbon dioxide spray (8) are spaced apart, and there is relative movement between the sprays and the substrate, such that a given area of the substrate is precooled by the cold carbon dioxide just prior to liquified metal particles impinging thereon. A shroud (6) may assist in directing the liquid carbon dioxide first onto the substrate, then into the spray of liquified metal particles.

REFERENCES:
patent: 3384154 (1968-05-01), Milton
patent: 4075376 (1978-02-01), Jaeger
patent: 4320251 (1982-03-01), Narasimhan
patent: 4600599 (1986-07-01), Wallsten
patent: 4661682 (1987-04-01), Gruner et al.
patent: 4753849 (1988-06-01), Zohler
patent: 4877645 (1989-10-01), Bleich
patent: 5302414 (1994-04-01), Alkhimov

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