Steam turbines; a practical and theoretical treatise for engineers and students, including a discussion of the gas turbine . Entropy (0) Fig. 9. Temperature-Entropy Diagram showing the Total Heat in Dry Sat-urated Steam at the Temperature 7\ (measured from the Absolute Zero ofTemperature).. .129 .566 Entropy (0) Fig. 10. Practical Example Illustrated with a Temperature-Entropy Diagram. the right of EF. (See Fig. 14.) The use of the temperature-entropy diagram in exhibiting the behavior of steam during 20 THE STEAM TURBINE expansion will now and illustrated with a practic
Steam turbines; a practical and theoretical treatise for engineers and students, including a discussion of the gas turbine . Entropy (0) Fig. 9. Temperature-Entropy Diagram showing the Total Heat in Dry Sat-urated Steam at the Temperature 7\ (measured from the Absolute Zero ofTemperature).. .129 .566 Entropy (0) Fig. 10. Practical Example Illustrated with a Temperature-Entropy Diagram. the right of EF. (See Fig. 14.) The use of the temperature-entropy diagram in exhibiting the behavior of steam during 20 THE STEAM TURBINE expansion will now and illustrated with a practicalexample. Fig. 10 illustrates the heat process going on when feed wateris received in the boilers of a power plant at ioo° F., is heated andconverted into steam at a temperature of 4000 F., and then losesheat in doing work. When the feed water first enters the boilerits temperature must be raised from ioo° to 4000 F. before any steaming begins. The heat added to the liquid is the areaMNCD. This area represents the difference between the heatof the liquid of steam at 4000 F. (qc) and at ioo° F. (qn) and isabout 306 The horizontal or entropy scale shows thatthe difference in entropy between water at ioo° and 4000 F. isabout .437* Every reader should understand how such a diagr
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