Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 60
r cent, and soon, and these figures are probably not far from correct.Therefore, the purification of the feed water before itreaches the surfaces exposed to the baking heat of thefurnace tends to a more economical use of fuel. It alsoreduces cleaning labor and the cost of repairs and increasesthe… … Fig. 21 atlas water tube boiler Section through Rear End Showing Water Purifier ness due to a coating of scale. An individual hand-hole islocated opposite each end of each water tube. 48 Steam Engineering These hand-holes are of the diamond-oval shape, havingan accurately fitting plate, held in…
