A steam power plant operating in a Rankine cycle has saturated vapor at 4.0 MPa leaving the boiler. The turbine exhausts to the condenser, operating at 75 kPa, and the mass flow rate of the working fluid is 5.0 kg/hr. The turbine efficiency is 0.85. Solve for the work produced by the turbine and the pump (in Watts), the heat transfer in the boiler (in Watts), and the Rankine cycle efficiency.

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
Section: Chapter Questions
Problem 1.1P
icon
Related questions
Question
1. A steam power plant operating in a Rankine cycle has saturated vapor at 4.0 MPa leaving the boiler. The
turbine exhausts to the condenser, operating at 75 kPa, and the mass flow rate of the working fluid is 5.0
kg/hr. The turbine efficiency is 0.85. Solve for the work produced by the turbine and the pump (in Watts),
the heat transfer in the boiler (in Watts), and the Rankine cycle efficiency
Equations:
Efficiency of a turbine:
W,(actual)
W,(isentropic) H2isentropic - H1
H2actual – H1
%D
Efficiency of a compressor:
W,(isentropic)_ Hzisentropic – Hı
=
-
W,(actual)
Hzactual – H1
-
Rankine cycle efficiency:
Wnet Wrurbinel - |Wpump
η -
рит
Qboiler
COP of a refrigerator:
Q¿(heat absorbed from cold space)
B =
Wc(work input to the compressor)
Thermodynamic tables:
Water
Van Ness – Page 681
Sonntag – Page 776
R-134a
Sonntag – Page 810
Transcribed Image Text:1. A steam power plant operating in a Rankine cycle has saturated vapor at 4.0 MPa leaving the boiler. The turbine exhausts to the condenser, operating at 75 kPa, and the mass flow rate of the working fluid is 5.0 kg/hr. The turbine efficiency is 0.85. Solve for the work produced by the turbine and the pump (in Watts), the heat transfer in the boiler (in Watts), and the Rankine cycle efficiency Equations: Efficiency of a turbine: W,(actual) W,(isentropic) H2isentropic - H1 H2actual – H1 %D Efficiency of a compressor: W,(isentropic)_ Hzisentropic – Hı = - W,(actual) Hzactual – H1 - Rankine cycle efficiency: Wnet Wrurbinel - |Wpump η - рит Qboiler COP of a refrigerator: Q¿(heat absorbed from cold space) B = Wc(work input to the compressor) Thermodynamic tables: Water Van Ness – Page 681 Sonntag – Page 776 R-134a Sonntag – Page 810
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The