The steam-turbine expansion line on the Mollier diagram and a short method of finding the reheat factor (1911)
National Bureau of Standards · leaf 23
but with increasing superheat the temperature and there-fore, by (6), the slope of the isopiestics increases and they are con-cave upward, as shown. Lines of constant dryness drawn for regularly changing valuesof X, e. g., :Jf = o.9, :x: = o.8, x^o.j, etc., cut off equal segments onany given… … To prove this we consider Fig. 3, in which 5*5 representsthe steam saturation line and SS^ the water line, i. e., theconstant dryness line for x = o. The whole length of any iso-piestic AB between the two saturation lines is given by AB = -ylAO + cW. But CB = / = the heat of evaporation at thegiven…
steam engines/ B8230E Steam power stations and plants
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