. Canadian Shipping and Marine Engineering January-December 1918. at the vertical height from top tobottom of generator may vary from 2 8 in. Through the generator passes :i% in. tube D, which is in series with thesteam and water connections, but whichdoes not communicate with the internalspace of the generator. The only con-nection into the generator is the tubeM from regulator, and the entire systemof generator, tubing and regulator isfilled up with water and sealed with plugI. The level of the boiler water in the% in. tube D will now rise or fall withthe boiler. The water in the gener
. Canadian Shipping and Marine Engineering January-December 1918. at the vertical height from top tobottom of generator may vary from 2 8 in. Through the generator passes :i% in. tube D, which is in series with thesteam and water connections, but whichdoes not communicate with the internalspace of the generator. The only con-nection into the generator is the tubeM from regulator, and the entire systemof generator, tubing and regulator isfilled up with water and sealed with plugI. The level of the boiler water in the% in. tube D will now rise or fall withthe boiler. The water in the generator,however, is being cooled all the time byradiation through the extenrnal fins, andkept below boiling point, while a portionof tube D is filled with steam at boilerpressure and tends to heat up the upperpart of the water in the generator. Ac-cording as the boiler level falls, so willmore of the tube D heat up the genera-tor and increase the pressure so that thefeed pipe regulator will be opened cor-respondingly more. The sectional illustration, Fig. 4, shows. FIG. 4. SECTIONAL VIEW OF GEN-ERATOR SHOWING CONTAINED FLUIDUNDER PRESSURE. the condition of the generator liquidwhen the boiler level is half way upper portion is changed into steamand maintains a constant pressure in the controlling system; while, if the boilerlevel rises, the valume of steam de-creases with the decreased amount of
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