1) In an air-standard Brayton cycle, air enters the compressor at 1000 lb m /hr,

Question

1) In an air-standard Brayton cycle, air enters the compressor at 1000 lbm/hr, 14.7 psia, and 40 °F, The inlet turbine temperature is 1440 °F. The compression process is accomplished in two equal stages, each with a pressurization ratio of 2.18 (second stage exit pressure will be 70 psia). Between each stage is intercooling back to 70 °F .

a) Draw the Pv diagram of the cycle and label state points 1, 1a, 1b, 2,3,4

b) Complete the table below *Do not use Table 9-1 formulas. Use the method of Appendix I.

STATE TEMP PRESS ENTHALPY

1

1a

1b

2

3

4

c) Find q and wd for each process , determine net work , efficiency, and Hp output

1

1a

1b

2

Explanation / Answer

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