Pla solve this reheat regen problem. Thank you
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Pla solve this reheat regen problem. Thank you
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- Steam enters the first turbine stage of a vapor power cycle with reheat and regeneration at 15 MPa, 500 0C, and expands to 2 MPa. A portion of the flow is diverted to a closed feedwater heater at 2 MPa, and the remainder is reheated to 500 0C before entering the second turbine stage. Expansion through the second turbine stage occurs to 1 MPa, where another portion of the flow is diverted to a second closed feedwater heater at 1 MPa. The remainder of the flow expands through the third turbine stage to 0.10 MPa, where a portion of the flow is diverted to an open feedwater heater operating at 0.10 MPa, and the rest expands through the fourth turbine stage to the condenser pressure of 10 kPa. Condensate leaves each closed feedwater heater as saturated liquid at the respective extraction pressure. The feedwater streams leave each closed feedwater heater at a temperature equal to the saturation temperature at the respective extraction pressure. The condensate streams from the closed heaters…Steam enters the first turbine stage of a vapor power cycle with reheat and regeneration at 32 MPa, 600°C, and expands to 8 MPa. A portion of the flow is diverted to a closed feedwater heater at 8 MPa, and the remainder is reheated to 560°C before entering the second turbine stage. Expansion through the second turbine stage occurs to 1 MPa, where another portion of the flow is diverted to a second closed feedwater heater at 1 MPa. The remainder of the flow expands through the third turbine stage to 0.15 MPa, where a portion of the flow is diverted to an open generator pressure. If each turbine stage has an isentropic efficiency of 85% and the pumps operate isentropically (a) sketch the layout of the cycle and number the principal state points. (b) determine the thermal efficiency of the cycle. (c) calculate the mass flow rate into the first turbine stage, in kg/h, for a net power output of 500 MW.A power plant operates on a regenerative vapor power cycle with one open feedwater heater. Steam enters the first turbine stage at 12 MPa, 560°C and expands to 1 MPa, where some of the steam is extracted and diverted to the open feedwater heater operating at 1 MPa. The remaining steam expands through the second turbine stage to the condenser pressure of 17 kPa. Saturated liquid exits the open feedwater heater at 1 MPa. The net power output for the cycle is 215 MW.For isentropic processes in the turbines and pumps, determine:(a) the percent cycle thermal efficiency.(b) the mass flow rate into the first turbine stage, in kg/s.(c) the rate of entropy production in the open feedwater heater, in kW/K.
- Consider a regenerative power cycle with an open feedwater heater. water vapor enters the turbine at 8.0 MPa, 480°C and expands to 0.7 MPa where part of this vapor is extracted and presented to the open feedwater heater operating at 0.7 MPa. The rest of the steam expands in the second stage of the turbine to the condenser pressure of 0.008 MPa. The condenser outlet is saturated liquid at 0.7 MPa. The isentropic efficiency of each turbine stage is 85% and each pump operates isentropically. If the net power of the cycle is 100 MW, determine:1.Thermal performance and2. The mass flow of steam entering the first stage of the turbine, in kg/h.Consider a regenerative vapor power cycle with a single open feedwater heater. Steam enters the first turbine stage at 12MPa, 500 0C, and expands to 0.3MPawhere some steam is extracted and fed to the feedwater heater. The remainder expands through the second-stage turbine and exits at the condenser pressure of 0.01 MPa. Saturated liquid at 0.3 MPaleaves the open feedwater heater. If the net power output of the cycle is 100 MW,and the turbine stages and pumps are isentropic, determine (a) the thermal efficiency, and(b) the mass flow rate of steam entering the first turbine, in kg/h.1.9Water is the working fluid in a regenerative Rankine cycle with one closed feedwater heater and one open feedwater heater. Steam enters the turbine at 1400 lbf/in.2 and 1150°F and expands to 500 lbf/in.2, where some of the steam is extracted and diverted to the closed feedwater heater. Condensate exiting the closed feedwater heater as saturated liquid at 500 lbf/in.2 undergoes a throttling process to 120 lbf/in.2 as it passes through a trap into the open feedwater heater.The feedwater leaves the closed feedwater heater at 1400 lbf/in.2 and a temperature equal to the saturation temperature at 500 lbf/in.2 The remaining steam expands through the second-stage turbine 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 Saturated liquid exits the open feedwater heater at 120 lbf/in.2The remaining steam expands through the third-stage turbine to the condenser pressure of 5 lbf/in.2 The turbine stages and the pumps each…
- 1.10Water is the working fluid in a reheat-regenerative Rankine cycle with one closed feedwater heater and one open feedwater heater. Steam enters the turbine at 1400 lbf/in.2 and 1000°F and expands to 500 lbf/in.2, where some of the steam is extracted and diverted to the closed feedwater heater. Condensate exiting the closed feedwater heater as saturated liquid at 500 lbf/in.2 undergoes a throttling process to 120 lbf/in.2 as it passes through a trap into the open feedwater heater.The feedwater leaves the closed feedwater heater at 1400 lbf/in.2 and a temperature equal to the saturation temperature at 500 lbf/in.2 The remaining steam is reheated to 900°F before entering the second-stage turbine, where it expands to 120 lbf/in.2 Some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.2 Saturated liquid exits the open feedwater heater at 120 lbf/in.2The remaining steam expands through the third-stage turbine to the condenser pressure of 3.5…Consider a regenerative vapor power cycle with one open feedwater heater. Steam enters the turbine at 8.0 MPa, 480oC and expands to 0.7 MPa, where some of the steam is extracted and diverted to the open feedwater heater operating at 0.7 MPa. The remaining steam expands through the second-stage turbine to the condenser pressure of 0.008 MPa. Saturated liquid exits the open feedwater heater at 0.7 MPa. The isentropic efficiency of each turbine stage is 85% and each pump operates isentropically. If the net power output of the cycle is 100 MW, determine (a) the thermal efficiency and (b) the mass flow rate of steam entering the first turbine stage, in kg/h.Problem 8.030 SI A power plant operates on a regenerative vapor power cycle with one open feedwater heater. Steam enters the first turbine stage at 12 MPa, 560°C and expands to 1 MPa, where some of the steam is extracted and diverted to the open feedwater heater operating at 1 MPa. The remaining steam expands through the second turbine stage to the condenser pressure of 50 kPa. Saturated liquid exits the open feedwater heater at 1 MPa. The net power output for the cycle is 330 MW. Assume that both turbine stages and both pumps have an isentropic efficiency of 75%.Determine:(a) the percent cycle thermal efficiency. (Ans is 30.5%)(b) the mass flow rate into the first turbine stage, in kg/s. (Ans is 306.9 kg/s)(c) the rate of entropy production in the open feedwater heater, in kW/K.
- Water is the working fluid in a regenerative Rankine cycle with one closed feedwater heater and one open feedwater heater. Steam enters the turbine at 1400 lbf/in.2 and 1150°F and expands to 500 lbf/in.2, where some of the steam is extracted and diverted to the closed feedwater heater. Condensate exiting the closed feedwater heater as saturated liquid at 500 lbf/in.2 undergoes a throttling process to 120 lbf/in.2 as it passes through a trap into the open feedwater heater.The feedwater leaves the closed feedwater heater at 1400 lbf/in.2 and a temperature equal to the saturation temperature at 500 lbf/in.2 The remaining steam expands through the second-stage turbine 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 Saturated liquid exits the open feedwater heater at 120 lbf/in.2The remaining steam expands through the third-stage turbine to the condenser pressure of 5 lbf/in.2 The turbine stages and the pumps each…A thermal power plant works according to a Rankine Cycle with Regeneration with an open heater. The steam enters the first stage of the turbine at 10 MPa and 650 °C, expanding to 1.4 MPa. Subsequently, part of the steam is extracted and leads to the open heater that operates at 1.4 MPa. The remaining steam expands through the second stage of the turbine to a capacitor pressure of 5 kPa. For isentropic processes in both turbines and pumps, determine the enthalpy values of all points in the cycle, as well as the efficiency of the latter.A simple rankine ideal cycle with water as the working fluid. Twenty kilograms of steam enters the turbine at 7.356 MPa and 500.356 oC and is cooled in the condenser at a pressure of 10.356 KPa by running cooling water from a lake through the tubes of the condenser at rate of 2000 kg. Show the T-s diagram and schematic of simple rankine cycle. For cycle determin (a) the turbine work, (b) the heat added, (c) the temperature rise of the cooling water, (d) the thermal efficiency of the cycle. For engine, determine (e) the heat added, (f) the thermal efficiency of the engine, and (g) Draw the T-s and schematic diagram.