Heat transfer shields

Details Heat transfer shields Heat transfer shields

1974-10-07

1976-12-28

Davis, Jr., Albert W.

Heat exchange

With repair or assembly means

Guide

110 98R, 165134, F28F 1900, F23M 910

Patent

active

039996000

ABSTRACT:
In horizontal tubes in which water evaporates steam tends to separate as an upper layer and, when such tubes are heated by hot gases passing downwardly over them, the upper regions which are in contact with steam and not water tend to overheat and be subject to corrosion. This is overcome according to the invention by covering the upper regions with shields, preferably of inverted V shape, which prevent the hot gases impinging on these regions. The tubes form part of a heat exchanger which can, for example, be an evaporator tube bank positioned in a convection pass in a steam boiler.

REFERENCES:
patent: 1782829 (1930-11-01), Nash et al.
patent: 2902264 (1959-09-01), Schick et al.
patent: 3078919 (1963-02-01), Brown
patent: 3149667 (1964-09-01), Astrup
patent: 3368532 (1968-02-01), Lewis et al.

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