Answered: At the beginning of the compression…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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I only need help with parts f to i.

At the beginning of the compression process of an air standard Otto cycle, p₁= 1 bar, T₁ = 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= 2.1 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 in %.
g)    the mean effective pressure, in bar.
h)    Develop a full exergy accounting per cycle, in kJ. Let T₀ = 300 K, p₀= 1 bar.
i)    Devise and evaluate the exergetic efficiency for the cycle.

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