hich admit this steam to each cylinder mustbe opened four hundred times per minute, as must also both valves132 NECESSARY EVAPORATION. by which, the steam is ejected. The puffs from the blast-pipe mustbe made at the rate of eight hundred per minute. If we assume that the contents of each cylinder… … of water evaporated will produce about 500 cubic feet of suchsteam; and consequently, to supply 1000 cubic feet of steam perminute to the cylinders, the boiler must evaporate two cubic feetof water per minute, or 120 cubic feet per hour. This is a rate ofevaporation which would correspond to a…
Steam-engines · Steam-navigation · Locomotives
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