1. A two-stage regenerative steam power plant produces 37 MW. The steam leaving the boiler is at 6.0 MPa and 500°C. The turbine has a design back pressure of 5 kPa. The extraction points are 1.4 MPa and 150 kPa for feedwater heating using open heaters. Determine a) The cycle efficiency b) The steam flow rate at the turbine inlet c) The fractions of the steam extracted for feedwater heating d) The quality of steam at turbine exit

1. A two-stage regenerative steam power plant produces 37 MW. The steam leaving the boiler is at 6.0 MPa and 500°C. The turbine has a design back pressure of 5 kPa. The extraction points are 1.4 MPa and 150 kPa for feedwater heating using open heaters. Determine a) The cycle efficiency b) The steam flow rate at the turbine inlet c) The fractions of the steam extracted for feedwater heating d) The quality of steam at turbine exit

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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3. An ideal regenerative cycle is executed with steam generated at 8 MPa, 500°C. Before condensing at 0.014 MPa, steam is extracted for feedwater heating at 0.8MPA. Find: a) Ideal work of the turbine b) turbine thermal efficiency c) cycle thermal efficiency d) draw the actual Ts diagram
An ideal regenerative cycle is executed with steam generated at 8 MPa, 500 degrees Celcius. Before condensing at 0.014 MPa, steam is extracted for feedwater heating at 0.8MPa. Find: a) Ideal work of the turbine b) turbine thermal efficiency c) cycle thermal efficiency d) draw the actual Ts diagram
7.) A Rankine cycle is used for a steam power plant. Liquid first enters the turbine at 2.25 MPa and 300C then exits at 0.025 MPa. The pump receives saturated liquid from the condenser before sending it to the boiler at the original pressure. a.) Draw the T-S diagram. b.) Find the dryness at turbine exit, c.) Wp, d.) Qa, e.) Qr, f.) Wt, g.) Wnet (kJ/kg), h.) Efficiency (%), and i.) Steam rate (kg/kWh) • 100%, 3.12 kJ/kg, 3016.3 kJ/kg, 2346.3 kJ/kg, 522.3 kJ/kg, 35.22%, 4.63 kg/kWh • 95.21%, 2.27 kJ/kg, 2809.6 kJ/kg, 1875.21 kJ/kg, 815.33 kJ/kg, 31.29%, 3.51 kg/kWh • 83.73%, 2.27 kJ/kg, 2742.1 kJ/kg, 1964.48 kJ/kg, 779.89 kJ/kg, 28.36%, 4.63 kg/kWh • 100%, 0 kJ/kg, 3016.3 kJ/kg, 271.93 kJ/kg, 2798 kJ/kg, 100%, 1 kg/kWh
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7.) A Rankine cycle is used for a steam power plant. Liquid first enters the turbine at 2.25 MPa and 300C then exits at 0.025 MPa. The pump receives saturated liquid from the condenser before sending it to the boiler at the original pressure. a.) Draw the T-S diagram. b.) Find the dryness at turbine exit, c.) Wp, d.) Qa, e.) Qr, f.) Wt, g.) Wnet (kJ/kg), h.) Efficiency (%), and i.) Steam rate (kg/kWh) • 100%, 3.12 kJ/kg, 3016.3 kJ/kg, 2346.3 kJ/kg, 522.3 kJ/kg, 35.22%, 4.63 kg/kWh 95.21%, 2.27 kJ/kg, 2809.6 kJ/kg, 1875.21 kJ/kg, 815.33 kJ/kg, 31.29%, 3.51 kg/kWh 83.73%, 2.27 kJ/kg, 2742.1 kJ/kg, 1964.48 kJ/kg, 779.89 kJ/kg, 28.36%, 4.63 kg/kWh • 100%, 0 kJ/kg, 3016.3 kJ/kg, 271.93 kJ/kg, 2798 kJ/kg, 100%, 1 kg/kWh
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A Rankine cycle is used for a steam power plant. Liquid first enters the turbine at 2.25 MPa and 300C then exits at 0.025 MPa. The pump receives saturated liquid from the condenser before sending it to the boiler at the original pressure.a.) Draw the T-S diagram. b.) Find the dryness at turbine exit,c.) Wp, d.) Qa, e.) Qr, f.) Wt, g.) Wnet (kJ/kg), h.) Efficiency(%),and i.) Steam rate(kg/kWh)
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