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 Correct Answer (Used) * Your answer is incorrect. Determine the net power output of the cycle, in Btu/hr. Wcycle = 1.201E+9 Hint Solution Btu/h Step 2 Determine the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. Qin = i Btu/h Save for Later Attempts: 4 of 4 used Attempts: 0 of 4 used Submit Answer

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 Correct Answer (Used) * Your answer is incorrect. Determine the net power output of the cycle, in Btu/hr. Wcycle = 1.201E+9 Hint Solution Btu/h Step 2 Determine the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. Qin = i Btu/h Save for Later Attempts: 4 of 4 used Attempts: 0 of 4 used Submit Answer

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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In ideal regenerative Rankin cycle receives 50000 kg/hr of steam throttled with three open feedwater heaters, steam enters the turbine at 15.356 Mpa and 700.356 oC. It is condensed in the condenser at a pressure of 150.356 kPa. Steam extracted at the following points: 15.0356 Mpa,10.0356 Mpa and 5.0356 Mpa to enter the open feedwater heaters simultaneously. A.) Determine the extracted steams from the turbine, in kg/s. Calculate the thermal efficiency of the (b) cycle, % and (c) engine, %.
Water is the working fluid in an ideal Rankine cycle. Steam enters the turbine at 1400 lb/in² and 1000°F. The condenser pressure is 2 lb-/in.² The net power output of the cycle is 250 MW. Cooling water experiences a temperature increase from 60°F to 76°F, with negligible pressure drop, as it passes through the condenser. Step 1 Determine the mass flow rate of steam, in lb/h. m = Hint Step 2 Your answer is correct. Oin 1513083.513 Determine the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. = i lb/h Save for Later Btu/h Attempts: 3 of 4 used Attempts: 0 of 4 used Submit Answer
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. The mass flow rate of steam entering the first stage of the turbine is 2.30x10 lb/h. Step 1 Determine the net power output of the cycle, in Btu/hr. cycle= Save for Later Btu/h Attempts: 0 of 4 used Submit Answer
Water is the working fluid in an Ideal Rankine cycle. Steam enters the turbine at 1400 lbpin² and 1000°F. The condenser pressure is 2 Iben. The net power output of the cycle is 250 MW. Cooling water experiences a temperature Increase from 60°F to 765, with negligible pressure drop, as it passes through the condenser. Step 1 Determine the mass flow rate of steam, In lb/h, Step 2 Hint Your answer is correct On Determine the rate of heat transfer, in Stuh, to the working fuld passing through the steam generator. 2144195010 Btu/h Step 3 Hint 1536198.045 Your answer is correct. Step 4 Your answer is correct. Determine the thermal efficiency of the cycle. Hint 39.78 % Determine the mass flow rate of cooling water, in lb/h 1b/h Attempts: 3 of 4 used Attempts: 1 of 4 used Attempts: 1 of 4 used
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6 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.
14. please answer asap
In a reheat-regenerative Rankine cycle, the condenser pressure is 10 KPa. Steam enters the first turbine at 12.5 MPa and 500 oC. Steam is reheated at 3 MPa at the same temperature before entering the second turbine. For the regeneration, steam is extracted from the second turbine at 0.5 MPa to an open feedwater heater (OFWH). Draw the schematic and T-S diagrams. Label the points by setting point 1 at the condenser outlet, point 2 at the 1st pump (right after the condenser) outlet, point 3 at the OFWH outlet, point 4 at the 2nd pump outlet, point 5 at the boiler outlet, point 6 at the reheater inlet, point 7 at the reheater outlet, point 8 for the extraction of steam to OFWH and point 9 at the condenser inlet. Use 2 decimal places for the enthalpy, steam quality (%), thermal efficiency (%), and other energies. For the fraction of steam (y) and entropy (s), use 4 decimal places. For the specific volume, use 6 decimal places. USE THE STEAM TABLES FROM CENGEL'S BOOK ONLY 1.T-S Diagram 2…
Water is the working fluid in an ideal Rankine cycle. Steam enters the turbine at 1400 lb/in² and 1400°F. The condenser pressure is 2 lb-/in.² The net power output of the cycle is 250 MW. Cooling water experiences a temperature increase from 60°F to 76°F, with negligible pressure drop, as it passes through the condenser. Step 1 * Your answer is incorrect. Determine the mass flow rate of steam, in lb/h. m = I lint i 1347451.2 lb/h
1) In an ideal regenerative Rankine cycle, vapor enters the turbine at 7MPa and 550°C. Steam first expands to 0.8MPa where some of the steam is extracted and transferred to an open feedwater heater (FWH) operating at 0.8MPa. The remaining steam expands through the second-stage turbine to the condenser pressure of 10kPa. Saturated liquid exits the open FWH at 0.8MPa and water enters pump I as a saturated liquid. Determine a) the power output of the cycle in kJ/kg b) the thermal efficiency of the cycle c) the heat transfer from the condenser to the environment, in kJ/kg. Boiler Pump II Open FWH Pump 1 Turbine Condenser
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Water is the working fluid in an ideal Rankine cycle. Steam enters the turbine at 1400 lb/in² and 1000°F. The condenser pressure is 2 Ib;/in.² The net power output of the cycle is 250 MW. Cooling water experiences a temperature increase from 60°F to 76°F, with negligible pressure drop, as it passes through the condenser. Step 1 Determine the mass flow rate of steam, in lb/h. m = i lb/h