Download Chapter 2 Basic concept of Cycle

Cycle-Tempo Manual
Technical Notes
3.6
3.7
3.8
3.9
3.5.2
Assumptions of the model....................................................................3-40
3.5.3
Options in the calculations ...................................................................3-40
3.5.4
Formulae used ......................................................................................3-40
General separator (type 26) ................................................................................3-43
3.6.1
Starting points ......................................................................................3-43
3.6.2
Calculation options...............................................................................3-43
Chemical reactor (type 27) .................................................................................3-45
3.7.1
Equilibria of individual reactions.........................................................3-45
3.7.2
Thermodynamic calculations ...............................................................3-48
Saturator (type 28) ..............................................................................................3-49
3.8.1
Functioning of the model of the saturator ............................................3-49
3.8.2
Calculation of the gas composition in the gas outlet pipe ....................3-49
3.8.3
Calculation of the mass flows ..............................................................3-50
3.8.4
Calculation of temperatures and use of the energy balance .................3-51
Compressor (type 29) .........................................................................................3-52
3.9.1
Fields of application.............................................................................3-52
3.9.2
Calculation procedure ..........................................................................3-52
3.9.3
Calculation isentropic efficiency with design conditions (SULZER
compressors) ........................................................................................3-53
3.9.4
Calculation isentropic efficiency with off-design conditions (SULZER
compressors) ........................................................................................3-54
Chapter 4 Pressure losses in pipes ....................................................................................4-1
Chapter 5 Processing the results .......................................................................................5-1
5.1
5.2
iv
Calculation of the system efficiency.....................................................................5-1
5.1.1
Calculation of the heating value.............................................................5-1
5.1.2
Energy input...........................................................................................5-2
5.1.3
Energy output.........................................................................................5-4
5.1.4
Own consumption ..................................................................................5-6
5.1.5
Efficiencies.............................................................................................5-8
Calculation of exergy efficiencies ........................................................................5-9
5.2.1
Introduction............................................................................................5-9
5.2.2
Possibilities for using exergy efficiencies ..............................................5-9
5.2.3
General definition of exergy efficiency................................................5-11