in length. They thus number of square feet of heating surface contained in well arranged by Engineer Stoppani. It comprises, to form slides that allow of a certain play. Moreover, in the boiler. Although this rule is followed by many, it the left, two steam engines of 50 horse power each, of order… … force it anew into the condensers, and so on in- if the total heating surface be known,, divide it Fig. 3.-PLAN OF CONGELATION PIPING. definitely. It is always the same supply of am- by 9, 12, or 15, according to the type of boiler, monia that is used. The lowering of the temper- and the quotient…
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