6.111 Steam enters a two-stage turbine with reheat operating atsteady state as shown in Fig. P6.111. The steam enters turbine 1 witha mass flow rate of 120,000 lb/h at 1000 lbf/in.², 800°F and expandsto a pressure of 60 lbf/in. From there, the steam enters the reheaterwhere it is heated at constant pressure to 350°C before entering tur-bine 2 and expanding to a final pressure of 1 lbf/in.? The turbinesoperate adiabatically with isentropic efficiencies of 88% and 85%,respectively. Kinetic and potential energy effects can be neglected.Determine the net power developed by the two turbines and the rateof heat transfer in the reheater, each in Btu/h.QinP3 = 60 lbf/in.2T = 350°CP2 = 60 lbf/in.2ReheaterWnetTurbine 1Turbine 2Nu = 88%Ni2 = 85%P4 =1 lbf/in.2P1 = 1000 Ibf/in.2T = 800°Fm = 120,000 lb/hFIGURE P6.111

Given that, Mass flow rate of the steam, m=120000lb/h at turbine. Properties of the steam at turbine…

6.111 Steam enters a two-stage turbine with reheat operating at steady state as shown in Fig. P6.111. The steam enters turbine 1 with a mass flow rate of 120,000 lb/h at 1000 lbf/in.², 800°F and expands to a pressure of 60 lbf/in.³ From there, the steam enters the reheater where it is heated at constant pressure to 350°C before entering tur- bine 2 and expanding to a final pressure of 1 lbf/in.² The turbines operate adiabatically with isentropic efficiencies of 88% and 85%, respectively. Kinetic and potential energy effects can be neglected. Determine the net power developed by the two turbines and the rate of heat transfer in the reheater, each in Btu/h. P3 = 60 lbf/in.? T; = 350°C P2 = 60 lbfſin.? Reheater W. net Turbine 1 Turbine 2 D Nu = 88% %3D n2 = 85% P1 = 1000 lbf/in.? T = 800°F m = 120,000 lb/h P4 = 1 lbf/in.² %3D

6.111 Steam enters a two-stage turbine with reheat operating at steady state as shown in Fig. P6.111. The steam enters turbine 1 with a mass flow rate of 120,000 lb/h at 1000 lbf/in.², 800°F and expands to a pressure of 60 lbf/in.³ From there, the steam enters the reheater where it is heated at constant pressure to 350°C before entering tur- bine 2 and expanding to a final pressure of 1 lbf/in.² The turbines operate adiabatically with isentropic efficiencies of 88% and 85%, respectively. Kinetic and potential energy effects can be neglected. Determine the net power developed by the two turbines and the rate of heat transfer in the reheater, each in Btu/h. P3 = 60 lbf/in.? T; = 350°C P2 = 60 lbfſin.? Reheater W. net Turbine 1 Turbine 2 D Nu = 88% %3D n2 = 85% P1 = 1000 lbf/in.? T = 800°F m = 120,000 lb/h P4 = 1 lbf/in.² %3D

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

See similar textbooks

Similar questions

The turbine section of a Brayton cycle receives hot compressed air at 150 psia, 2100 R, expands it to 15 psia and develops a gross output of 15,000 HP. Air enters the compressor section at 15 psia, 500 °R. Determine: a) mass of air required (Ib./s), b) compressor power required (HP), c) Net power output (HP), d) thermal efficiency.
Pls. answer thank you! A steam turbine of 6 MW capacity has a Willan's line equation of ms = 5.52 + 3.200 kg/hr. Determine the steam consumption at 63% load, kg/hr.
Define and derive an expression for stage efficiency in case of a steam turbine.
4.) Steam with a flow rate of 3000 lbm/hr enters an adiabatic nozzle at 200 psia, 600 ft/min,with a specific volume of 2.36 ft3/lbm, and a specific internal energy of 122.7 Btu/lbm. Theexit conditions are p = 20 psia, specific volume = 17.6 ft3/lbm, and internal energy = 973Btu/lbm. Determine the exit velocity.
Superheated steam at 18 MPa, 560 °C enters the steam turbine. The pressure at the exit of the turbine is 0.06 MPa and saturated liquid water leaves the condenser at 0.06 MPa. Pressure is increased to 18 MPa again after the pump. Find: (a) Sketch the process on a T-s diagram. (b) The net work per unit of steam flow in kJ/kg. (c) Heat transfer to steam passing through the boiler, in kJ/kg.
Pls. Answer this thank you!Steam enters a turbine stage with an enthalpy of 3628 kj/kg at 70 m/s and leaves the same stage with an enthalpy of 2846 kj/kg and a velocity of 124 m/s. Calculate the power in KW if there are 5 kg/s steam admitted at the turbine throttle.
Steam is admitted in a Rankine engine at 3280 kpa, 500 °C and is exhausted at 328 kpa (saturated). Determine the efficiency cycle and engine. Can you show me the detailed step by step solution?
5.29 From a constant temperature reser- voir (in the surroundings) at 3000°F, there are transferred 2000 Btu of heat to a Carnot engine. The engine receives the heat at 440°F and discharges at the sink temperature of 80°F. (s) Are the heat transfers reversible? Compute the change of entropy of the engine system accompanying the heat added process and the heat rejection process. (b) What is the net change of entropy of the universe in one cycle? of the engine in one cycle? (c) When all the Carnot work produced has been used, what is AS, for the universe? (d) If the input to the engine is 2000 Btu of paddle work (other events remaining as first des- cribed), what is AS, for the universe? Ans. (a) 2.222, -2.222 Btu/°R, (b) 1.644 Btu/°R, 0, (c) 3.124, (d) 2.222 Btu/°R.
A single acting two-stage air compressor deals with 4 m^3/min of air under atmospheric conditions of 1.013 bar and 15°C with aspced of 250r.p.m. The delivery pressure is 80 bar. Assuming complete inlercooling, find the minimum power required by the compressor and the bore and stroke of the compressor. Assume a pistonspeed of 3 m/s, mechanical efficiency of 75 percent, and volumetric efficiency of 80 percent per stage. Assumethe polytropic index of compression in both the stages to be it = 1.25 and neglect clearance.
(17 blanks) Calculate the efficiency of the Carnot Engine for ideal gas. Consider the figure below for a complete cycle of Carnot engine, where the cycle goes from ad->ab->bc->cd Carnot cycle Он TH Tc - V 02016 Pearson Education, Inc. processes: processes and segment ab & cd are the Where segments ad & bc are the and the volumes involved are Va, Vb, Vc, Vd, and the two temperatures TC and
An ideal reheat turbine with one stage of reheat receives steam at 8.0 Mpa, 480 °C. Reheat pressure is 0.83 Mpa and exhaust pressure is 0.007 Mpa. The work is 1559 kJ/kg and thermal efficiency is 41.05%. h2 = || kJ/kg h3 = kJ/kg t3 = °C Continue >
I need the final answer only. A steam turbine operating at 5Mpa, 400C( h = 3195.7 KJ/kg) has an exhaust pressure of 100 Kpa( h = 2475 KJ/kg). It is made of two-row, velocity compounded stage at the vapor region of expansion with a blading efficiency of 74%.For a 5% rotational and leakage allowance, find the actual enthalpy of the exhaust.