4.51 Steam at 1800 lbf/in.2 and 1100°F enters a turbine operating at steady state. As shown in Fig.

4.51 Steam at 1800 lbf/in.2 and 1100°F enters a turbine operating at steady state. As shown in Fig. P4.51, 20% of the entering mass flow is extracted at 600 lbf/in.2 and 500°F. The rest of the steam exits as a saturated vapor at 1 lbf/in.2. The turbine develops a power output of 6.8x10^6 Btu/h. Heat transfer from the turbine to the surroundings occurs at a rate of 5x10^4 Btu/h. Neglecting kinetic and potential energy effects, determine the mass flow rate of the steam entering the turbine, in lb/s. __________________________________________________________________________________________
Textbooks:
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Fundamentals of Engineering Thermodynamics 8th Edition (Wiley):
Moran, M. J., et. al., 2014, Fundamentals of Engineering Thermodynamics, 8th ed., Wiley, Hoboken, NJ.
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Engineering Mechanics Statics (Pearson):
Hibbeler, R. C. Engineering Mechanics Statics. Pearson Prentice Hall, Pearson Education, 2016.
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