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Example following data refer to a simple steam power plant : S. No. Location Pressure Quality/Temp. Velocity 1. Inlet to turbine 6 MPa (= 60 bar) 380°C 2. Exit from turbine 10 kPa (= 0.1 bar) 0.9 200 m/s inlet to condenser 3. Exit from condenser 9 kPa (=0.09 bar) Saturated and inlet to pump Exit from pump and liquid 4. 7 MPa (= 70 bar) inlet to boiler 5. Exit from boiler 6.5 MPa (= 65 bar) 400°C Rate of steam flow = 10000 kg/h. Calculate : (i) Power output of the turbine. (ii) Heat transfer per hour in the boiler and condenser separately. (ii) Mass of cooling water circulated per hour in the condenser. Choose the inlet tempera- ture of cooling uwater 20°C and 30°C at exit from the condenser. (iv) Diameter of the pipe connecting turbine with condenser.

Example following data refer to a simple steam power plant : S. No. Location Pressure Quality/Temp. Velocity 1. Inlet to turbine 6 MPa (= 60 bar) 380°C 2. Exit from turbine 10 kPa (= 0.1 bar) 0.9 200 m/s inlet to condenser 3. Exit from condenser 9 kPa (=0.09 bar) Saturated and inlet to pump Exit from pump and liquid 4. 7 MPa (= 70 bar) inlet to boiler 5. Exit from boiler 6.5 MPa (= 65 bar) 400°C Rate of steam flow = 10000 kg/h. Calculate : (i) Power output of the turbine. (ii) Heat transfer per hour in the boiler and condenser separately. (ii) Mass of cooling water circulated per hour in the condenser. Choose the inlet tempera- ture of cooling uwater 20°C and 30°C at exit from the condenser. (iv) Diameter of the pipe connecting turbine with condenser.

Elements Of Electromagnetics
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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FExample 1. The following data refer to a simple steam power plant : S. No. Location Pressure Quality/Temp. Velocity 1. Inlet to turbine 6 MPa (= 60 bar) 380°C 2. Exit from turbine 10 kPa (= 0.1 bar) 0.9 200 m/s inlet to condenser 9 kPa (=0.09 bar) Exit from condenser and inlet to pump 3. Saturated liquid 4. Exit from pump and 7 MPa (= 70 bar) inlet to boiler 5. Exit from boiler 6.5 MPa (= 65 bar) 400°C 162 / 1110 Rate of steam flow = 10000 kglh. Calculate : (i) Power output of the turbine. (ii) Heat transfer per hour in the boiler and condenser separately. (iii) Mass of cooling water circulated per hour in the condenser. Choose the inlet tempera- ture of cooling water 20°C and 30°C at exit from the condenser. (iv) Diameter of the pipe connecting turbine with condenser. Solution. Refer Fig. 6. (i) Power output of the turbine, P: At 60 bar, 380°C : From steam tables, 3177.2 – 3043.0 h, = 3043.0 (at 350°C) + x 30 .. By interpolation (400 – 350) = 3123.5 kJ/kg ()
Transcribed Image Text:FExample 1. The following data refer to a simple steam power plant : S. No. Location Pressure Quality/Temp. Velocity 1. Inlet to turbine 6 MPa (= 60 bar) 380°C 2. Exit from turbine 10 kPa (= 0.1 bar) 0.9 200 m/s inlet to condenser 9 kPa (=0.09 bar) Exit from condenser and inlet to pump 3. Saturated liquid 4. Exit from pump and 7 MPa (= 70 bar) inlet to boiler 5. Exit from boiler 6.5 MPa (= 65 bar) 400°C 162 / 1110 Rate of steam flow = 10000 kglh. Calculate : (i) Power output of the turbine. (ii) Heat transfer per hour in the boiler and condenser separately. (iii) Mass of cooling water circulated per hour in the condenser. Choose the inlet tempera- ture of cooling water 20°C and 30°C at exit from the condenser. (iv) Diameter of the pipe connecting turbine with condenser. Solution. Refer Fig. 6. (i) Power output of the turbine, P: At 60 bar, 380°C : From steam tables, 3177.2 – 3043.0 h, = 3043.0 (at 350°C) + x 30 .. By interpolation (400 – 350) = 3123.5 kJ/kg ()
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