Thermodynamics filled in class notes_Part_19

Thermodynamics filled in class notes_Part_19 - 2.5. BRAYTON...

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Unformatted text preview: 2.5. BRAYTON 45 x 3: combustion chamber, 3 4: expansion in turbine, and 4 y : turbine exit gas goes through regenerator (heat exchanger). A schematic for the Brayton cycle is shown in Figure 2.11. Turbine Compressor 1 4 w Regenerator Combustion chamber 2 3 x y Figure 2.11: Schematic for Brayton cycle with regeneration. For this to work, the gas at the turbine exit must have a higher temperature than the gas at the compressor exit. If the compression ratio is high, the compressor exit temperature is high, and there is little benefit to regeneration. Now consider the regenerator, which is really a heat exchanger. The first law holds that dE cv dt bracehtipupleft bracehtipdownrightbracehtipdownleft bracehtipupright =0 = Q cv bracehtipupleftbracehtipdownrightbracehtipdownleftbracehtipupright =0 W cv bracehtipupleftbracehtipdownrightbracehtipdownleftbracehtipupright =0 + mh 2 mh x + mh 4 mh y , (2.259) 0 = h 2 h x + h 4 h y , (2.260)(2....
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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_19 - 2.5. BRAYTON...

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