GB190930363A - Improvements in Apparatus for the Transmission of Heat between Fluids Including Evaporators, Condensers, Steam and other Boilers and Superheaters. - Google Patents

Abstract

30,363. Rusdell, W. J. Dec. 29. Plate apparatus.-In evaporators, condensers, steam-generators, superheaters, and other apparatus for effecting a transfer of heat between fluids, of the type in which a number of metal plates are separated by distance-pieces, and the fluids flow in the spaces between them, one of the fluids is distributed to the appropriate set of spaces by passages through the plates in such a manner that the two fluids move in approximately parallel directions and preferably in counter-current. Figs. 1, 3, and 4 show an arrangement applicable as a steam-generator to be placed in a flue j. The plates a are held between end pieces d, g by bolts h, and in alternate spaces between them are arranged distance-pieces m, Fig. 3, surrounding the waterinlet passage k and steam-outlet passage l and strips e allowing a free passage to the flue gases. The other spaces are surrounded by bands q, Fig. 4, and provided with strips n, o, p to distribute the water and steam in the spaces. Modifications are described in which the strips e are replaced by projections or corrugations on the plates, and in which the bands q are formed by bending over the edges of the plates or as flanges. Figs. 11 and 12 show an arrangement of such nests of plates built .up into a steamgenerator. The nests of plates a are separated by wedge-shaped distance-pieces d and built up into a ring, through the centre of which the flue gases pass upwards and then downwards through the nests of plates. The distance-pieces d are hollow and divided into two portions, the upper portions serving as steam-collectors, and the lower as water-distributors.