Transcription of MODEL BOILERS - Plans for Everything
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MODEL BOILERS - Plans for Everything
MODEL BOILERS A booklet devoted to the construction ofmodel BOILERS may well open with a fewcautionary words, as the dangers connectedwith steam-raisers are very real; and thoughmodel-boiler explosions are fortunately rare, ifthey do occur they may be extremelydisastrous. Therefore the following warnings:(1.) Do not use tins or thin sheet ironfor BOILERS . One cannot tell how farinternal corrosion has gone. The scalingof 1/100 inch of metal off a "tin" isobviously vastly more serious than thesame diminution in the thickness of,say, a 1/4-inch plate.
inexpensive, and is worth the money asked. Some Points in Design The efficiency of a boiler is governed chiefly (1) by the amount of heating surface exposed to the flames; (2) by the distribution of the heating surface; (3) by the amount of fuel which can be burnt in the furnace in a given time; (4) by avoiding wastage of heat.
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