Steam enters the first-stage turbine shown in the figure at 40 bar and 4500C with a mass flow rate of 40,000 kg/hr. Steam exits the first-stage turbineat 20 bar and 400°C. The steam is then reheated at constant pressure to 500°C before entering the second-stage turbine. Steam leaves the secondstage as saturated vapor at 0.6 bar. Assume steady state operation and ignore stray heat transfer and kinetic and potential energy effects.SaturatedSteamvaporP1 40 barTутP4= 0.6 barPowerTurbineTurbineP2 20 barT2 400°CP3 20 barT3 500°CReheaterQrehealerDetermine the volumetric flow rate of the steam at the inlet to the first-stage turbine, in m/min, the rate of heat transfer to the steam flowing throughthe reheater, in kW, and the total power produced by the two stages of the turbine, in kW.

Draw the temperature versus entropy curve for the expansion process of steam through two turbines…

Answered: Steam enters the first-stage turbine…

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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Thermodynamics Instructions: Draw the T-s and Schematic diagram for this problem
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The working gas of a thermodynamic cycle is a diatomic gas (assume constant specific heats.) The gas originally starts at 100kPa, 4m 3 and 27° C. It undergoes a four-step process --- • Process A-B: The gas is compressed at constant temperature to one-quarter of its original volume. • Process B-C: The volume of the gas is then doubled at constant pressure. • Process C-D: The gas then undergoes an adiabatic expansion. • Process D-A: The gas then undergoes a constant volume process back to its original state a) Make a table of the temperature, pressure, volume, internal energy, enthalpy, entropy and quality factor (T, P, V, U, H & S) at the start of each process. b) Make a table of the change in internal energy, heat flow, work done, change in enthalpy, and change in entropy (AU, Q, W, AH & AS) during each leg of the cycle. c) Draw well-labelled P-V & T-S diagrams (indicating lines of constant temperature, heat flow, work, etc.) d) Calculate the thermal efficiency of the cycle.
Hi, can you only help with part a of the following?
b) A nearly flat bicycle tire becomes noticeably warmer after it has been pumped up. Approximate this process as a reversible adiabatic compression. Take the initial pressure and initial temperature of the air before it is put in the tire to be P = 1.00 bar and T; = 298 K. The final volume of the air in the tire is V = 1.00 L and the final pressure is Pf = 5.00 bar. Hints: • Cy.m = 5/2 R. Heat Capacity ratio, y = Cp.m Cy,m = 1.4 %3D Cy,m For a reversible adiabatic change, 4 = (4 )°, where c = R For perfect gas: CP.m - Cv,m = R CP.m and Cv.m denote molar heat capacity at constant pressure and volume, respectively. Tand V are temperature and volume at initiate (i) state ad final (f) state. i) Derive a mathematical expression to show the relationship of temperature, volume and heat capacity ratio (y) for the transformation of this process from initial to final states.

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