2)A steam power plant operates according to the simple ideal Rankine cycle. The pressure limits of the cycle are 9 MPa and 10 kPa, and the flow of water circulating in the cycle is 60 kg/s. It is required that the moisture content of the steam at the turbine outlet does not fall below 90 percent. Accordingly, calculate (a) the lowest possible turbine inlet temperature, (b) the heat supplied to the cycle, and (c) the thermal efficiency of the cycle by showing the cycle on a T-s diagram with saturateg vapor and saturated liquid curves

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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2)A steam power plant operates according
to the simple ideal Rankine cycle. The
pressure limits of the cycle are 9 MPa
and 10 kPa, and the flow of water
circulating in the cycle is 60 kg/s. It is
required that the moisture content of
the steam at the turbine outlet does not
fall below 90 percent. Accordingly,
calculate (a) the lowest possible turbine
inlet temperature, (b) the heat supplied
to the cycle, and (c) the thermal
efficiency of the cycle by showing the
cycle on a T-s diagram with saturateg
vapor and saturated liquid curves
3)A reversible heat engine takes 250 kcal of heat
from a heat tank at 260 °C, and then gives the
remaining heat to a heat tank at 38 °C
a)Cycle efficiency
b)Entropy change of high and low
temperature heat tanks
c)Calculate the total entropy change
of the system.
Q =250 kcal
Q2
T = 533 K
T2 = 311 K
W
Transcribed Image Text:2)A steam power plant operates according to the simple ideal Rankine cycle. The pressure limits of the cycle are 9 MPa and 10 kPa, and the flow of water circulating in the cycle is 60 kg/s. It is required that the moisture content of the steam at the turbine outlet does not fall below 90 percent. Accordingly, calculate (a) the lowest possible turbine inlet temperature, (b) the heat supplied to the cycle, and (c) the thermal efficiency of the cycle by showing the cycle on a T-s diagram with saturateg vapor and saturated liquid curves 3)A reversible heat engine takes 250 kcal of heat from a heat tank at 260 °C, and then gives the remaining heat to a heat tank at 38 °C a)Cycle efficiency b)Entropy change of high and low temperature heat tanks c)Calculate the total entropy change of the system. Q =250 kcal Q2 T = 533 K T2 = 311 K W
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