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 204
heater the pump is between the heater andthe boiler. The saving effected by heating the feed water with ex-haust steam can be easily ascertained by the use of athermometer, a steam table, and a simple arithmetical cal-culation. First, find by thermometer the temperature ofthe water before entering… … Fig. 72 SQUARE OPEN HEATER 192 Steam Engineering and the remainder will be the number of heat units addedto the water by the heater. Next find by table 17 the num-ber of heat units above 32 °F. in the steam at the pressureordinarily carried in the boiler, and subtract from this thenumber of heat…
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