Page 10 - Advanced Gas Turbine Cycles
P. 10
Preface ................................................. xiii
Notation ................................................ xvii
Chapter 1 . A brief review of power generation thermodynamics ..... 1
1.1. Introduction ..................................
1.2. Criteria for the performance of power plants ............
1.2.1. Efficiency of a closed circuit gas turbine plant ...........
1.2.2. Efficiency of an open circuit gas turbine plant ...........
1.2.3. Heatrate ....................................
1.2.4. Energy utilisation factor ..........................
1.3. Ideal (Carnot) power plant performance ...............
1.4. Limitations of other cycles ........................
1.5. Modifications of gas turbine cycles to achieve higher
thermalefficiency .............................. 9
References ................................... 11
Chapter 2 . Reversibility and availability ...................... 13
2.1. Introduction .................................. 13
2.2. Reversibility. availability and exergy ................. 14
2.2.1. Flow in the presence of an environment at To (not
involving chemical reaction) ....................... 14
2.2.2. Flow with heat transfer at temperature T ............... 16
2.3. Exergy flux ................................... 19
2.3.1. Application of the exergy flux equation to a closed cycle .... 20
2.3.2. The relationships between 6. (+and ZCR. ZQ ............. 20
2.4. The maximum work output in a chemical reaction at To ..... 22
2.5. The adiabatic combustion process .................... 23
2.6. The work output and rational efficiency of an open circuit
gas turbine ................................... 24
2.7. A final comment on the use of exergy ................. 26
References ................................... 26
Chapter 3 Basic gas turbine cycles ......................... 27
3.1. Introduction .................................. 27
vii