The kiln drying of lumber; a practical and theoretical treatise . Fig. 47.—Recording thermometer record of temperature of kiln thermostatically controlled. DRYING BY SUPERHEATED STEAM 203 perature as low as 220° to 225° F. (See Table IV,page 50.) Application of New Method.—In applying thismethod, it can be readily combined with my spray-con-denser system, by the addition of the water sprays andthe pipe condensers in the spray chambers. By thiscombination, the drying may be hastened towards theend of the operation without necessitating an exces-. FiG. 48.—Simple arrangement for use of High Velo
The kiln drying of lumber; a practical and theoretical treatise . Fig. 47.—Recording thermometer record of temperature of kiln thermostatically controlled. DRYING BY SUPERHEATED STEAM 203 perature as low as 220° to 225° F. (See Table IV,page 50.) Application of New Method.—In applying thismethod, it can be readily combined with my spray-con-denser system, by the addition of the water sprays andthe pipe condensers in the spray chambers. By thiscombination, the drying may be hastened towards theend of the operation without necessitating an exces-. FiG. 48.—Simple arrangement for use of High Velocity Superheated Steam Methodwith inclined piling system. S,S, steam jets, ff, heating coils. C,C, curtains. sively high temperature to end with. This is desirablealso where very dry wood is required. In the illustrations the water sprays and condensersare not shown. In Fig. 48 the condensers would beplaced on the side walls, immediately above the steamjets S,8, and the water sprays alongside the steam jetpipe. In Fig. 49 the condensers could be placed be-neath the lumber, where the heating pipes are is no place, however, for the water sprays in thisarrangement. 204 THE KILN DRYING OF LUMBER Flat Piling with Reversible. Circulation.—The mostrecent design for tlie use of this high velocity low super-heat method is shown in Fig. 50, in which the lumber isflat piled.^ The heating pipes are on the sides of thekiln, and an auxiliary system of pipes is placed betweenthe two stacks of lumber to restore the superheat of thesteam
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Keywords: ., bookcentury1900, bookdecade1910, bookidkilndry, booksubjectlumber
