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Steam enters an adiabatic turbine at 1.2 MPa and 451 °C and leaves at 129 °C with a quality of 44 percent. Neglecting the changes in kinetic and potential energies, determine the mass flow rate (kg/s) required for a power output of 7.4 MW. (answer to 2 decimal) Must use following data tables for this question.

Steam enters an adiabatic turbine at 1.2 MPa and 451 °C and leaves at 129 °C with a quality of 44 percent. Neglecting the changes in kinetic and potential energies, determine the mass flow rate (kg/s) required for a power output of 7.4 MW. (answer to 2 decimal) Must use following data tables for this question.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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Steam enters an adiabatic turbine at 1.2 MPa and 451 °C and leaves at 129 °C with a quality of 44 percent. Neglecting the changes in kinetic and potential energies, determine the mass flow rate (kg/s) required for a power output of 7.4 MW. (answer to 2 decimal) Must use following data tables for this question, Superheated water vapour 1.2MPa (T saturated = 187.96C) T V u h S °C m3/kg kJ/kg kJ/kg kJ/kg Sat. 0.16326 2587.8 2783.8 6.5217 200 0.16934 2612.9 2816.1 6.5909 250 0.19241 2704.7 2935.6 6.8313 300 0.21386 2789.7 3046.3 7.0335 350 0.23455 2872.7 3154.2 7.2139 400 0.25482 2955.5 3261.3 7.3793 500 0.29464 3123.4 3477 7.6779 600 0.33395 3296.3 3697 7.9456 700 0.37297 3475.3 3922.9 8.1904 800 0.41184 3661 4155.2 900 0.45059 3853.3 4394 1000 0.48928 4052.2 4639.4 1100 0.52792 4257.5 4891 1200 0.56652 4468.7 5148.5 1300 0.60509 4685.5 5411.6 Temp (°C) 120 121 122 123 124 125 126 127 128 129 hf (kJ/kg) 501.54 505.97 510.40 514.82 2710.28 519.25 2711.71 523.68 2713.13 528.10 2714.54 532.53 2715.95 536.95 2717.34 541.38 2718.73 hg (kJ/kg) 2705.96 2707.41 2708.85 8.4176 8.6303 8.831 9.0212 9.2022 9.375 Saturated table for water hf hg (kJ/kg) (kJ/kg) 545.81 2720.11 550.23 2721.49 Temp (°C) 130 131 132 133 134 135 136 137 138 139 554.66 2722.85 559.09 2724.21 563.51 2725.56 567.94 2726.90 572.36 576.79 581.22 585.64 2728.23 2729.55 2730.86 2732.17 Temp hf (°C) 140 141 142 143 144 145 146 147 148 149 (kJ/kg) 590.07 594.50 598.92 603.35 607.77 612.20 616.63 621.05 625.48 629.91 hg (kJ/kg) 2733.47 2734.76 2736.03 2737.31 2738.57 2739.82 2741.06 2742.29 2743.52 2744.73
Transcribed Image Text:Steam enters an adiabatic turbine at 1.2 MPa and 451 °C and leaves at 129 °C with a quality of 44 percent. Neglecting the changes in kinetic and potential energies, determine the mass flow rate (kg/s) required for a power output of 7.4 MW. (answer to 2 decimal) Must use following data tables for this question, Superheated water vapour 1.2MPa (T saturated = 187.96C) T V u h S °C m3/kg kJ/kg kJ/kg kJ/kg Sat. 0.16326 2587.8 2783.8 6.5217 200 0.16934 2612.9 2816.1 6.5909 250 0.19241 2704.7 2935.6 6.8313 300 0.21386 2789.7 3046.3 7.0335 350 0.23455 2872.7 3154.2 7.2139 400 0.25482 2955.5 3261.3 7.3793 500 0.29464 3123.4 3477 7.6779 600 0.33395 3296.3 3697 7.9456 700 0.37297 3475.3 3922.9 8.1904 800 0.41184 3661 4155.2 900 0.45059 3853.3 4394 1000 0.48928 4052.2 4639.4 1100 0.52792 4257.5 4891 1200 0.56652 4468.7 5148.5 1300 0.60509 4685.5 5411.6 Temp (°C) 120 121 122 123 124 125 126 127 128 129 hf (kJ/kg) 501.54 505.97 510.40 514.82 2710.28 519.25 2711.71 523.68 2713.13 528.10 2714.54 532.53 2715.95 536.95 2717.34 541.38 2718.73 hg (kJ/kg) 2705.96 2707.41 2708.85 8.4176 8.6303 8.831 9.0212 9.2022 9.375 Saturated table for water hf hg (kJ/kg) (kJ/kg) 545.81 2720.11 550.23 2721.49 Temp (°C) 130 131 132 133 134 135 136 137 138 139 554.66 2722.85 559.09 2724.21 563.51 2725.56 567.94 2726.90 572.36 576.79 581.22 585.64 2728.23 2729.55 2730.86 2732.17 Temp hf (°C) 140 141 142 143 144 145 146 147 148 149 (kJ/kg) 590.07 594.50 598.92 603.35 607.77 612.20 616.63 621.05 625.48 629.91 hg (kJ/kg) 2733.47 2734.76 2736.03 2737.31 2738.57 2739.82 2741.06 2742.29 2743.52 2744.73
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