QI/The open feedwater heater of a regenerative Rankine cycle is to heat 7000 kPafeedwater from 200C to a saturated liquid. The turbine supplies bleed steam at 6000kPa and 350 C to this unit. This steam is condensed to a saturated liquid before enteringthe pump. Calculate the amount of bleed steam required to heat 1 kg of feedwater in(35 mark)this unit.Steam6000 Kpa1 kgSatliquid350°cFeed water7000 Kpa200°c

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Answered: QI/The open feedwater heater of a…

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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The net work for a given reheat Rankine cycle is 80MW. Steam at 10 MPa and 500C enters the first turbine and then, the second turbine at 1.2 MPa and 500C. Saturated liquid exits the condenser at 20 kPa. Draw the schematic and T-S diagrams. Label the points by setting point 1 at the condenser outlet, point 2 at the pump outlet, point 3 at the boiler outlet, point 4 at the reheater inlet, point 5 at the reheater outlet, and point 6 at the condenser inlet. Use 2 decimal places for the enthalpy and other energies in solving and for the final answers. For the steam quality (x) and entropy (s), use 4 decimal places in solving. For the specific volume, use 6 decimal places. IMPORTANT: USE THE STEAM TABLES FROM CENGEL'S BOOK ONLY (uploaded already in the files section). Determine the following: Enthalpy at point 2 in kJ/kg = Enthalpy at point 4 in kJ/kg = Enthalpy at point 5 in kJ/kg = Enthalpy at point 6 in kJ/kg = Thermal Efficiency in % = Heat added in kJ/kg = Heat rejected in…
Regenerative cycle)The closed feedwater heater of a regenerative Rankine cycle is to heat 7000 kPa feedwater from 260C to a saturated liquid. The turbine supplies bleed steam at 6000 kPa and 325Cto this unit. This steam is condensed to a saturated liquid before entering the pump. (a) Calculate the amount of bleed steam required to heat 1 kg of feedwater in this unit(b) and the work input to the pump
Considering that the change in enthalpy at the first stage of a Reheat Rankine Cycle is 450 BTU/lb and 850 BTU/lb was recorded in the second stage, calculate for the thermal efficiency (in percent) of the cycle if both stages has a 93% efficiency and having a heat added of 9000 kJ/kg. (Hint: Neglect the pump work)
In an ideal reheat-rgenerative cycle, steam enters the turbine at 6 MPaa and 400 degrees Celsius. After expansion to 1.4 MPaa steam is withdrawn and reheated to 300 degrees Celsius . Extractions for regenerative heating occur at 0.15 MPaa and 1.4 MPaa and the condenser pressure is 0.1 MPaa. Use mass flowrate of 1 kg/s. Compute for the following 5. Heat rejected from the condenser 6. Pump work
1.) A steam power plant uses the ideal Reheat Rankine cycle where the steam enters the high-pressure turbine at 4 MPa and 300C. It partially expands to 600 kPa then it is reheated to the same temperature. After expanding again, it enters the condenser at 10 kPa. Sketch the schematic diagram and the TS diagram with labeled points, and solve for Qa, Qr, Wt, Wp, Wnet, thermal efficiency, and Steam rate kg 3241.70,2144.67,1101.06 4.03, 1097.03 33.84%, 3.28 k kJ kg kl, kg kWh
3. A simple ideal Rankine cycle which uses water as the working fluid operates its condenser at 40 °C and its boiler at 300 °C. Calculate the work produced by the turbine, the heat supplied in the boiler, and the thermal efficiency of this cycle when the steam enters the turbine without any superheating. Wpump.in Pump 0-1 9in Boiler 13 qout Turbine Condenser Wturb,out 4
In an ideal reheat-rgenerative cycle, steam enters the turbine at 6 MPaa and 400 degrees Celsius. After expansion to 1.4 MPaa steam is withdrawn and reheated to 300 degrees Celsius . Extractions for regenerative heating occur at 0.15 MPaa and 1.4 MPaa and the condenser pressure is 0.1 MPaa. Use mass flowrate of 1 kg/s. Compute for the following 1. Fractions of steam extracted 2. Turbine Work
1. Determine the Rankine efficiency of a condensing steam turbine operating in a Rankine cycle as follows: Steam pressure - 200 psiaSteam temperature - 1000 FExhaust pressure - 2 in Hg absoluteSteam rate - 1.5 lb/kW-hr 2. If the no. 1 problem has a thermal efficiency of 30%, how many barrels of 30 °API fuel oil will be required to produce 1000 kW-hr of power. Neglect the pump work.
In an ideal reheat-rgenerative cycle, steam enters the turbine at 6 MPaa and 400 degrees Celsius. After expansion to 1.4 MPaa steam is withdrawn and reheated to 300 degrees Celsius . Extractions for regenerative heating occur at 0.15 MPaa and 1.4 MPaa and the condenser pressure is 0.1 MPaa. Use mass flowrate of 1 kg/s. Compute for the following 9. Thermal cycle efficiency 10. Thermal engine efficiency
This is an Ideal Rankine Cycle with "Open Feedwater Heater'. We are to analyze the system but the pressure entering the feedwater is not provided. The task is to select/choose an appropriate pressure value for the feedwater, which will then yield the best efficiency. I really need some help to get this done correctly. Thanks for your time.
Considering that the change in enthalpy at the first stage of a Reheat Rankine Cycle is 1050 kJ/kg and 850 BTU/lb was recorded in the second stage, calculate for the thermal efficiency (in percent) of the cycle if both stages has a 93% efficiency and having a heat added of 9000 kJ/kg. (Hint: Neglect the pump work)
A Rankine cycle using superheat and reheat applications. Steam enters the stage 1 turbine at 8 MPa and a temperature of 480°C and expands at a pressure of 0.7 MPa. The steam is then reheated to a temperature of 440°C before entering the stage 2 turbine, where the steam expands in the condenser at a pressure of 0.008 MPa. The net power generated is 100 MW. Calculate : A) the thermal efficiency of the cycle, B) the mass flow rate of the steam, C) the rate of heat transferred from the condenser to the surroundings (Qout)

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