ils between the walls of " All the damage to ordinary superheaters is done European patents, to publish a minute description of at the instant and for a very short time after the in- the two ; these coils resting upon the perforated plate, it. The patents being now secured, we give an illus- Fig.… … position and recomposi- to 33 per cent in coal has CARVALHO'S STEAM SUPERHEATER. tion of steam, until the been effected, the vessel temperature of the retort is reduced 'below the de- upon the top of the boiler. The coils absorb the heat being thus enabled to carry one-third more cargo in-…
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