Pla solve this reheat regen problem. Thank you
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Pla solve this reheat regen problem. Thank you
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- 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.A power plant operates on a regenerative vapor power cycle with one open feedwater heater. Steam enters the first turbine stage at 12 MPa, 520C 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 6 kPa. Saturated liquid exits the open feedwater heater at 1 MPa. For isentropic processes in the turbines and pumps, determine for the cycle (a) the thermal efficiency and (b) the mass flow rate into the first turbine stage, in kg/h, for a net power output of 330 MW.3.) A steam power plant uses the ideal Reheat-Regenerative Rankine cycle where the steam enters the high-pressure turbine at 4 MPa and 300C. It partially expands to 600 kPa where some steam is extracted for feedwater heating while the rest 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 mass taken for feedwater heating, Qa, Qr, Wt, Wp, Wnet, thermal efficiency, and Steam rate. Neglect the condensate pump work. kg 20.01%, 2667.841715.52955.97 k, 3.74, 952.32,35.69%, 3.78 kg kWh Specific Volume Internal Energy Temp Enthalpy Prom MP Entropy Sal Sat, Sat. Liquid Sat. Sat. Liquid Evap. Vapor Liquid Uy Evap. Sat. Vapor t Р 10% Evap. Vapor Up u, hr Liquid S, h h₂ 8% 8₂ 006113 .01 1.0002 206 136 .0007 1.89 1.0001 181 255 3.77 1.0001 159 675 1.0001 142 789 0005 ,00 2375.3 2375.3 7.90 2370.0 2377.9 15.81 2364.7 2380.6 22.88 2360.0 2382.9 01 2501.3 2501.4 7.91 2496.9…
- 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 kWhIn a reheat cycle steam at 15 Mpa, 540°C enters the engine and expands to 1.95 Mpa. At this point the steam is withdrawn and passed through a reheater. It reenters the engine at 540°C. Expansion now occurs to the condenser pressure of 0.0035 Mpa. (a) For the ideal cycle, find ee (b) A 60,000 kW turbine operates between the same state points except that the steam enters the reheater at 1.95Mpa and 260°C, departs at 1.8 Mpa and 540°C. The steam flow is 147,000 kg/hr; generator efficiency is 96%. For actual engine, ek, mk, and nk, (c) Determine the approximate enthalpy of the exhaust steam if the heat lost through the turbine casing is 2% of the combined work.4. Steam at 200 bar, 760°C enters the throttThe first steam power plant operates on an ideal reheat Rankine cycle. Steam enters the first turbine at 8 MPa and 500 C and leaves at 3 MPa. Steam is then reheated at a constant pressure to 500 C before it expands to 20 kPa in the low-pressure turbine. Assuming that heat is being added to the boiler from a high temperature source at 1800 K and the condenser is transferring heat to a temperature sink at 300 K. 1. Investigate the effect of changing pump efficiency on the overall thermal efficiency of the thermodynamics cycle (Hint: You will assume different values for the isentropic pump efficiency such as: 70%, 80%, 90%, 95%, and 100%, then observe how it will change the thermal efficiency of the cycle). Representing the results in a plot is recommended.
- 1. Consider a steam power plant that operates on a simple ideal Rankine cycle and has a net power output of45 MW. Steam enters the turbine at 7 MPa and 500°C and iscooled in the condenser at a pressure of 10 kPa by runningcooling water from a lake through the tubes of the condenserat a rate of 2000 kg/s. Show the cycle on a T-s diagram withrespect to saturation lines, and determine (a) the thermal efficiency of the cycle, (b) the mass flow rate of the steam, and(c) the temperature rise of the cooling water. Answers:(a) 38.9 percent, (b) 36 kg/s, (c) 8.4°C 2. Consider a 210-MW steam power plant that operateson a simple ideal Rankine cycle. Steam enters the turbine at10 MPa and 500°C and is cooled in the condenser at a pressure of 10 kPa. Show the cycle on a T-s diagram with respectto saturation lines, and determine (a) the quality of the steamat the turbine exit, (b) the thermal efficiency of the cycle,and (c) the mass flow rate of the steam. Answers: (a) 0.793,(b) 40.2 percent, (c) 165…a. Calculate the thermal efficiency and turbine-exit quality for an Ideal Rankine Cycle where the steam exits boiler at 5MPa, 450C and the condenser pressure is 15 kPa. Draw the systems and the Ts diagram for the process. b. Calculate also the thermal efficiency and turbine-exit quality if the system is modified to an Ideal Reheat Rankine Cycle where the reheat takes place at 1 MPa and the steam leaves the reheater at 500C. Draw the systems and the Ts diagram for the process and discuss your findings of these two systems.Q4: Consider a steam power plant that operates on an ideal reheat- regenerative Rankine cycle with one open feedwater heater, one closed feedwater heater, and one reheater. Steam enters the turbine at 15 MPa the condenser at a pressure of 10 kPa. and 600°C and is condensed Some steam is extracted from the turbine at 4 MPa for the closed feedwater heater, and the remaining steam is reheated at the same pressure to 600°C. The extracted steam is completely condensed in the heater and is pumped to 15 MPa before it mixes with the feedwater at the same pressure. Steam for the open feedwater heater is extracted from the low-pressure turbine at a pressure of 0.5 MPa. Determine the fractions of steam extracted from the turbine as well as the thermal efficiency of the сycle. I kg 15 MPa TA 600°C 11 High-P turbine Low-P turbine Boiler Reheater 10 15 MPa Po= P =4 MPa 600°C2 4 MPa 10 1-y -z 12 1-y 6. 1-y 4 MPa 0.5 MPa 10 kPa 0.5 MPa 12 Оpen FWH Closed 1-y-z FWH 10 kPa Mixing chamber 13 Condenser…
- Q2: A steam enters the turbine at 3 Mpa and 350 C in a steam power plant operating on the simple ideal Rankine cycle. The steam is then condensed in the condenser at a pressure of 75kPa. Determine the thermal efficiency of the cycle.A regenerative vapor cycle has two turbine stages with steam entering the first stage at 12 MPa, 520 C and expanded to 1,200 kPa, where some of the steam is extracted and diverted to the open feedwater heater operating at 1,200 kPa. The remaining steam expands through the second stage to the condenser pressure of 12 kPa. Saturated liquid steam exits the open feedwater heater at 1,200 kPa. For ideal cycle with mass flow rate of steam from the boiler of 35.0 kg/s a) draw the T-S diagram correctly with all points labeled b) show the steam property table & indicate the readings of all relevant properties c) what is the quality of steam at the exhaust of the second stage turbine d) hourly extraction of steam, kg/hr e) work output of the turbine, MW f) cycle thermal efficiencyIn a reheat cycle steam at 15 MPa, 540°C enters the engine and expands to 1.95 MPa. At this point the steam is withdrawn and passed through a reheater. It reenters the engineat 540°C. Expansion now occurs to the condenser pressure of 0.0035 MPa. (a) A 60,000 kw turbine operates between the same state points except that the steam enters the reheater at 1.95 MPa and 260°C, departs at 1.8 MPa and 540°C. The steam flow is 147,000 kg/hr, generator efficiency is 96%. For actual engine, find, ek, mk, and nk, (b) Determine the approximate enthalpy of the exhaust steam if the heat lost through the turbine casing is 2% of the combined work.