. Transactions. is not compressible, has beenfound to be effective. The denser product does not possess the unusuallyhigh insulating values of the natural Sil-0-Cel, but offers mechanicaladvantages for certain construction. These four forms of construction can be modified to give walls of any p. A. BOECK 333 desired thermal efficiency, the respective methods being largely deter-mined by the character of the work under consideration. Specific formsof high-temperature equipment are shown in Figs. 4 to 8. In reverberatory furnaces Sil-0-Cel has found application as an insu-lating material for roo
. Transactions. is not compressible, has beenfound to be effective. The denser product does not possess the unusuallyhigh insulating values of the natural Sil-0-Cel, but offers mechanicaladvantages for certain construction. These four forms of construction can be modified to give walls of any p. A. BOECK 333 desired thermal efficiency, the respective methods being largely deter-mined by the character of the work under consideration. Specific formsof high-temperature equipment are shown in Figs. 4 to 8. In reverberatory furnaces Sil-0-Cel has found application as an insu-lating material for roofs and furnace walls in the manner indicated inFig. 4. Fig. 5 indicates the method which is finding universal application forgas-making equipment, showing the powdered Sil-0-Cel tamped betweenthe firebrick lining and the metal shell to a density of about 12 lb. to thecubic foot. This form of construction has been in actual use for a num-ber of years in some of the largest gas plants on the Pacific Coast, in in-. Stfoce/; /nsu/ofn^ Sr/cir Fig. 6.—^Lime Kiln Insulated with Sil-0-Cel Powder. sulating oil-gas generators, superheaters, carburetors and similar equip-ment. The advantages of Sil-0-Cel in this connection are threefold: Inthe first place, the heat conducted to the surface of the metal shell whichis dissipated by radiation and convection is reduced to a , in preventing the access of high temperatures to the steel shell,it prevents oxidation and deterioration of the shell through overheatingand gives it the protection which it should have. Thirdly, Sil-0-Cel inthe powdered form is to a certain extent elastic, allowing variation inexpansion and contraction between the firebrick and the shell, eliminatingall danger of excessive mechanical strains being set up between the insulation of lime kilns and similar equipment is shown in Fig. G. 334 THE THERMAL INSULATION OP HIGH-TEMPERATURE EQUIPMENT A unique application of the use of powdered Sil-0-Cel in
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
