Question

Asked Oct 18, 2019

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At the beginning of the compression process of an air standard Otto cycle, *p*_{1 }= 1 bar, *T*_{1} = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of *V*_{d }= 2.5 L. Determine per cylinder:

a) the volume at state 1.

b) the air mass per cycle.

c) the heat addition per cycle, in kJ.

d) the heat rejection per cycle, in kJ.

e) the net work per cycle, in kJ.

f) the thermal efficiency.

g) the mean effective pressure, in bar.

h) Develop a full exergy accounting per cycle, in kJ. Let

i) Devise and evaluate the exergetic efficiency for the cycle.

Step 1

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Step 2

Determine the swept volume.

Step 3

Write the expression of compres...

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