. (3) and divide that area by the length of the diagram expressed to the proper unit. If the instrument gives the area in Area of Diagrams by Calculation. square inches divide the area by the Some of the more simple diagrams may length in inches, and lay off the result be more readily calculated… … The heat required to produce the steam used at a stroke of the high-press- Fig. 9. ure cylinder will be the total heat of evaporation from the temperature of feed For such a diagram as shown in Fig. water, and at the temperature of boiler 9 the area of that portion falling under pressure. the…
Engineering
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