. The street railway review . less than half load its efficiency is good. Superheated Steam.—The amount which steam may be super-heated when used for driving steam engines is limited on ac-count of the carbonizing action of the steam on the cylinder andvalve lubricants. With a special valve gear constructed foruse with superheated steam, steam superheated degreesFahrenheit above the temperature corresponding to Its pressuremay be used. With steam turbines any superheat which it ispracticable to obtain may be used, and great economy is effectedby its use. Some of the makers of water-tube b
. The street railway review . less than half load its efficiency is good. Superheated Steam.—The amount which steam may be super-heated when used for driving steam engines is limited on ac-count of the carbonizing action of the steam on the cylinder andvalve lubricants. With a special valve gear constructed foruse with superheated steam, steam superheated degreesFahrenheit above the temperature corresponding to Its pressuremay be used. With steam turbines any superheat which it ispracticable to obtain may be used, and great economy is effectedby its use. Some of the makers of water-tube boilers now makean attachment to be placed in the path of the heated gaseswithin the brickwork of the boiler for superheating the amount of superheat which can be obtained by this devicedepends upon its heating surface, but enough heating surface may jrii Ve.\r, No. 4—Seit. 5, 1W3.] DAILY STRFHT RAILWAY RKMKW 675 «.. ■■ «-■ ■ :w / ,- a - n . n B,, , ,—-n «• —O O O D— —O D— —O O \ g Q 1 :. FIG. 3—PLAN OF CHELSKA STEAM TURBINE STATION, LONDON. CAPACITV, ,000 KW.
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
