Thermodynamics filled in class notes_Part_16

Thermodynamics filled in class notes_Part_16 - 40 CHAPTER...

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2.5. BRAYTON 39 Pump P1 Steam Generator (e.g. ND power plant) Low pressure turbine Condenser 1 2 3 6 5 4 High pressure turbine Mixer Pump P2 Q L . 7 Thermal process steam load (e.g. heating the ND campus) 8 Liquid Liquid W T . W P1 . W P2 . Q H . (e.g. to St. Joseph’s Lake) Figure 2.8: Schematic for Rankine cycle with cogeneration. no inlet or exhaust stages, combustion process replaced by heat transfer process, cycle completed by heat transfer to surroundings (not exhaust), and all process internally reversible. In some cycles, it is common to model the working ±uid as a fxed mass . In others, it is common to model the system as a control volume . 2.5 Brayton 2.5.1 Classical The Brayton cycle is the air standard model for gas turbine engines. It is most commonly modeled on a control volume basis. It has the following components: 1 2: isentropic compression, CC BY-NC-ND. 18 November 2011, J. M. Powers.
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Unformatted text preview: 40 CHAPTER 2. CYCLE ANALYSIS 2 3: isobaric heat transfer to combustion chamber, 3 4: isentropic expansion through turbine, and 4 1: isobaric heat exchange with surroundings. A schematic for the Brayton cycle is shown in Figure 2.9. Diagrams for P v and T s for Turbine Compressor Combustion Chamber Fuel Air Products environmental exhaust return 1 2 3 4 w Figure 2.9: Schematic for Brayton cycle. the Brayton cycle are shown in Figure 2.10. P v T s 1 2 3 4 isobar isobar 1 2 3 4 isentrope isentrope Figure 2.10: P v and T s diagrams for the Brayton cycle. The eciency of the air standard Brayton cycle is found as = w net q H . (2.200) CC BY-NC-ND. 18 November 2011, J. M. Powers....
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This note was uploaded on 11/26/2011 for the course EGN 3381 taught by Professor Park-sou during the Fall '11 term at FSU.

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Thermodynamics filled in class notes_Part_16 - 40 CHAPTER...

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