(a)
Interpretation:
Show that the thermal efficiency of the air standard Diesel cycle can be expressed as:
Where
Concept Introduction:
The efficiency of the air standard Diesel cycle can be calculated by following formula,
Where
(b)
Interpretation:
Show that for the same compression ratio the thermal efficiency of the air standard Otto engine is greater than the thermal efficiency of the air-standard Diesel cycle.
Concept Introduction:
The efficiency of air standard Diesel cycle can be less only if the term
(c)
Interpretation:
How does the thermal efficiency of an air-standard Otto cycle with a compression ratio of 8 compare with the thermal efficiency of an air-standard Diesel cycle with the same compression ratio and a cut off ratio of 2? How is the comparison changed if the cutoff ratio is 3.
Concept Introduction:
The efficiency of an air-standard Otto cycle is
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Chapter 8 Solutions
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