Aissa Thermo1 Chapter 10 1
Thermodynamics I
Spring 1432/1433H (2011/2012H)
Saturday, Wednesday 8:00am 10:00am & Monday 8:00am - 9:00am
MEP 261 Class ZA
Dr. Walid A. Aissa
Associate Professor, Mech. Engg. Dept.
Faculty of Engineering at Rabigh, KAU, KSA
Chapter #10
December XX, 2011
Announcements:
Dr. Walid’s e-mail and Office Hours
walid_aniss@yahoo.com
Office hours for Thermo 01 will be every
Sunday and Tuesday from 9:00 – 12:00 am in Dr. Walid’s office (Room 5-213).
Text book:
Thermodynamics An Engineering Approach
Yunus A. Cengel & Michael A. Boles
7th Edition, McGraw-Hill Companies,
ISBN-978-0-07-352932-5, 2008
Chapter 10
VAPOR AND COMBINED POWER
CYCLES
Objectives of CH10: To
• Analyze vapor power cycles in which the
working fluid is alternately vaporized and condensed. • Analyze power generation coupled with process heating called cogeneration.
• Investigate ways to modify the basic
Rankine vapor power cycle to increase the cycle thermal efficiency.
• Analyze the reheat and regenerative
vapor power cycles.
• Analyze power cycles that consist of
two separate cycles known as combined cycles and binary cycles
Chapter 10
VAPOR AND COMBINED POWER CYCLES
10–1 ■ THE CARNOT VAPOR CYCLE
We have mentioned repeatedly that the Carnot cycle is the most efficient cycle operating between two specified temperature limits. Thus it is natural to look at the Carnot cycle first as a prospective ideal cycle for vapor power plants.
FIGURE 10–1
T-s diagram of a Carnot vapor cycle.
Consider a steady-flow Carnot cycle executed within the saturation dome of a pure substance, as shown in Fig. 10-1. The fluid is heated reversibly and isothermally in a boiler
(process 1-2), expanded isentropically in a turbine (process 2-3), condensed reversibly and isothermally in a condenser (process 3-4), and compressed isentropically by a compressor to the initial state (process 4-1).
10–2 ■ RANKINE CYCLE: THE IDEAL
CYCLE FOR VAPOR POWER CYCLES
FIGURE 10–2
The simple ideal Rankine cycle.
Rankine
Spring 1432/1433H (2011/2012H)
Saturday, Wednesday 8:00am 10:00am & Monday 8:00am - 9:00am
MEP 261 Class ZA
Dr. Walid A. Aissa
Associate Professor, Mech. Engg. Dept.
Faculty of Engineering at Rabigh, KAU, KSA
Chapter #10
December XX, 2011
Announcements:
Dr. Walid’s e-mail and Office Hours
walid_aniss@yahoo.com
Office hours for Thermo 01 will be every
Sunday and Tuesday from 9:00 – 12:00 am in Dr. Walid’s office (Room 5-213).
Text book:
Thermodynamics An Engineering Approach
Yunus A. Cengel & Michael A. Boles
7th Edition, McGraw-Hill Companies,
ISBN-978-0-07-352932-5, 2008
Chapter 10
VAPOR AND COMBINED POWER
CYCLES
Objectives of CH10: To
• Analyze vapor power cycles in which the
working fluid is alternately vaporized and condensed. • Analyze power generation coupled with process heating called cogeneration.
• Investigate ways to modify the basic
Rankine vapor power cycle to increase the cycle thermal efficiency.
• Analyze the reheat and regenerative
vapor power cycles.
• Analyze power cycles that consist of
two separate cycles known as combined cycles and binary cycles
Chapter 10
VAPOR AND COMBINED POWER CYCLES
10–1 ■ THE CARNOT VAPOR CYCLE
We have mentioned repeatedly that the Carnot cycle is the most efficient cycle operating between two specified temperature limits. Thus it is natural to look at the Carnot cycle first as a prospective ideal cycle for vapor power plants.
FIGURE 10–1
T-s diagram of a Carnot vapor cycle.
Consider a steady-flow Carnot cycle executed within the saturation dome of a pure substance, as shown in Fig. 10-1. The fluid is heated reversibly and isothermally in a boiler
(process 1-2), expanded isentropically in a turbine (process 2-3), condensed reversibly and isothermally in a condenser (process 3-4), and compressed isentropically by a compressor to the initial state (process 4-1).
10–2 ■ RANKINE CYCLE: THE IDEAL
CYCLE FOR VAPOR POWER CYCLES
FIGURE 10–2
The simple ideal Rankine cycle.
Rankine