Water is the working fluid in an ideal Rankine cycle withreheat.Superheated vapor enters the turbine at 10 MPa, 320°C,andthe condenser pressure is 8 kPa. Steam expandsthrough the first stageturbine and then is reheated to 320°C before expandingin the second stage turbine. Determine forthe cyclea. the heat addition, in kJ per kg of steam entering thefirst-stageturbine.b. the optimum reheat pressure which results inmaximum thermal efficiency. i.e. plot eficiency vsreheat pressure to get the optimum reheat pressure.Vary the reheat pressure in steps of 1 Mpa initially andthen find the approximate pressure for maximumefficiency.find the optimumpressure.

Step 1: Step 2: Step 3: Step 4:

Answered: Water is the working fluid in an ideal…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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a) A sinewave is having a frequency of 50 Hz and instantaneous value of 250 Volts at 1.1 milli seconds. Find i) The maximum value of sinusoidal voltage waveform and ii) The value of voltage at 2.1 milli seconds. b) Determine the instantaneous equation for the voltage waveform shown in figure, if Vp=150 Volts, Time period is 15 milli seconds and =50 degrees. Vp t = 0 Ф II
Question 13 of 15 Determine: The figure below shows a vapor power cycle that provides process heat and produces power. The steam generator produces vapor at 500 lbf/in.², 800°F, at a rate of 8 x 104 lb/h. Seventy percent of the steam expands through the turbine to 10 lbf/in.² and the remainder is directed to the heat exchanger. Saturated liquid exits the heat exchanger at 500 lbf/in.² and passes through a trap before entering the condenser at 10 lbf/in.² Saturated liquid exits the condenser at 10 lbf/in.² and is pumped to 500 lbf/in.² before entering the steam generator. The turbine and pump have isentropic efficiencies of 85% and 89%, respectively. For the process heat exchanger, assume the temperature at which heat transfer occurs is 465°F. Let To -60°F, po - 14.7 lbf/in.² Steam generator 6 7p=89% P₁ = 500 lbffin,² T₁ = 800°F Heat exchanger Pump m₂ ND 1 (y) (1-y) √n process 7=85% P4=500 lbf/in.2 saturated liquid (a) the magnitude of the process heat production rate, in Btu/h. P3=10…
2. A two-legged core is shown in figure below. The winding on the left leg of the core (N,) has 600 turns, and the winding on the right (N2) has 200 turns. The coils are wound in the directions shown in the figure. If the dimensions are as shown, then what flux would be produced by currents i, = 0.5 A and iz = 1.00 A? Assume p, = 1000 and constant. -15 cm+ +i5 cm 15 cm 600 turns 200 turms 15 cm core depth- 15 cm [0.0054 Wb]
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