Water is the working fluid in an ideal regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1400 lbf/in.2 and 1000°F and expands to 120 lbf/in.2, where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.2 The remaining steam expands through the second-stage turbine to the condenser pressure of 10 lbf/in.² Saturated liquid exits the open feedwater heater at 120 lbf/in.2 The net power output of the cycle is 1 x 10⁹ Btu/h. Determine for the cycle: (a) the mass flow rate of steam entering the first stage of the turbine, in lb/h. (b) the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. (c) the percent thermal efficiency.

Water is the working fluid in an ideal regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1400 lbf/in.2 and 1000°F and expands to 120 lbf/in.2, where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.2 The remaining steam expands through the second-stage turbine to the condenser pressure of 10 lbf/in.² Saturated liquid exits the open feedwater heater at 120 lbf/in.2 The net power output of the cycle is 1 x 10⁹ Btu/h. Determine for the cycle: (a) the mass flow rate of steam entering the first stage of the turbine, in lb/h. (b) the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. (c) the percent thermal efficiency.

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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Water is the working fluid in an ideal regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1400 lbf/in.2 and 1000°F and expands to 120 lbf/in.2, where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.2 The remaining steam expands through the second-stage turbine to the condenser pressure of 6 lbf/in.2 Saturated liquid exits the open feedwater heater at 120 lbf/in.2 The net power output of the cycle is 1 x 108 Btu/h.Determine for the cycle:(a) the mass flow rate of steam entering the first stage of the turbine, in lb/h.(b) the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator.(c) the percent thermal efficiency.
Water is the working fluid in an ideal Rankine cycle with reheat. Superheated vapor enters the turbine at 10 MPa, 320°C, and the condenser pressure is 8 kPa. Steam expands through the first-stage turbine to 1 MPa and then is reheated to 320°C. Determine for the cyclea. the heat addition, in kJ per kg of steam entering the first-stage turbine.b. the thermal efficiency.c. the heat transfer from the working fluid passing through the condenser to the cooling water, in kJ per kg of steam entering the first-stage turbine.
8.25 Water is the working fluid in an ideal regenerative Rankine cycle. Superheated vapor enters the turbine at 10 MPa, 480°C, and the condenser pressure is 6 kPa. Steam expands through the first-stage turbine to 0.7 MPa where some of the steam is extracted and diverted to an open feedwater heater operating at 0.7 MPa. The remaining steam expands through the second-stage turbine to the condenser pressure of 6 kPa. Saturated liquid exits the feedwater heater at 0.7 MPa. Determine for the cycle a. the heat addition, in kJ per kg of steam entering the first-stage turbine. 2613.9 b. the thermal efficiency. 44.2% c. the heat transfer from the working fluid passing through the condenser to the cooling water, in kJ per kg of steam entering the first-stage turbine. 1458.4
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Water is the working fluid in a regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1800 lb-/in² and 1200°F and expands to 120 lb/in.², where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lb-/in.² The remaining steam expands through the second-stage turbine to the condenser pressure of 2 lb-/in.² Each turbine stage and both pumps have isentropic efficiencies of 85%. Flow through the condenser, open feedwater heater, and steam generator is at constant pressure. Saturated liquid exits the open feedwater heater at 120 lb/in.² The mass flow rate of steam entering the first stage of the turbine is 2.42x106 lb/h. Step 1 * Your answer is incorrect. Determine the net power output of the cycle, in Btu/hr. W cycle Hint Save for Later 1203000000 Btu/h Attempts: 3 of 4 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above. Step 3 The…
Water is the working fluid in an ideal regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1400 Ibf/in.? and 1000°F and expands to 120 lbf/in.?, where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.? The remaining steam expands through the second-stage turbine to the condenser pressure of 10 lbf/in.2 Saturated liquid exits the open feedwater heater at 120 lbf/in.? The net power output of the cycle is 1 x 10° Btu/h. Determine for the cycle: (a) the mass flow rate of steam entering the first stage of the turbine, in Ib/h. (b) the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. (c) the percent thermal efficiency.
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Water is the working fluid in an ideal regenerative Rankine cycle with one closed feedwater heater. Steam enters the turbine at 1400 Ib/in.² and 1200°F and expands to 120 lb/in.2, where some of the steam is extracted and diverted to the closed feedwater heater. The remaining steam expands through the second-stage turbine to the condenser pressure of 2 lbs/in.² Condensate exiting the feedwater heater as saturated liquid at 120 lb/in.2 undergoes a throttling process as it passes through a trap into the condenser. The feedwater leaves the heater at 1400 lb/in.2 and a temperature equal to the saturation temperature at 120 lbf/in.2 The net power output of the cycle is 283 MW. Step 1 Determine the mass flow rate of steam entering the first stage of the turbine, in lb/h. Your answer is correct. = 11 = 1730323.25 * Your answer is incorrect. Determine the thermal efficiency of the cycle. lb/h i 0.22
Water is the working fluid in a regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1600 lb-/in² and 1100°F and expands to 120 lb-/in.2, where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.² The remaining steam expands through the second-stage turbine to the condenser pressure of 2 lb/in.² Each turbine stage and both pumps have isentropic efficiencies of 85%. Flow through the condenser, open feedwater heater, and steam generator is at constant pressure. Saturated liquid exits the open feedwater heater at 120 lb/in.2 The mass flow rate of steam entering the first stage of the turbine is 2.42x106 lb/h. Step 1 Determine the net power output of the cycle, in Btu/hr. W cycle = i Btu/h
Water is the working fluid in a regenerative Rankine cycle with one open feedwater heater. Steam enters the turbine at 1800 lb-/in² and 1200°F and expands to 120 lb-/in.², where some of the steam is extracted and diverted to the open feedwater heater operating at 120 lb-/in.² The remaining steam expands through the second-stage turbine to the condenser pressure of 2 lb/in.² Each turbine stage and both pumps have isentropic efficiencies of 85%. Flow through the condenser, open feedwater heater, and steam generator is at constant pressure. Saturated liquid exits the open feedwater heater at 120 lb-/in.² The mass flow rate of steam entering the first stage of the turbine is 2.42x10 lb/h. Step 1 Your Answer Correct Answer (Used) * Your answer is incorrect. Determine the net power output of the cycle, in Btu/hr. W cycle = Hint Solution Step 2 Qin 1.201E+9 Determine the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. = i Btu/h Save for Later Btu/h…
Thermodynamics 2