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  3. d, e, f? thank you a)why nox emissions are higher

D, E, F? Thank you a)Why NOx emissions are higher in diesel engines? b)Explain the changes required...

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Mechanical Engineering

D, E, F? Thank you

a)Why NOx emissions are higher in diesel engines?

b)Explain the changes required for using an air conditioningsystem for a room as a refrigeration system for the storage offrozen food.

(c)If the aim is to reduce CO2 emissions from a car, would youselect an engine operating on an Otto cycle or a Diesel cycle?Discuss your selection.

(d)Explain the detailed operation of the Atkinson cycle, andexplain why it has been used for many hybrid electric vehicles. Whydoes the Atkinson cycle have a higher efficiency than the Ottocycle?

(e)In a Rankine cycle, why is it worth bleeding off some of thesteam before the HP turbine to preheat the steamentering theboiler?

(f)Explain adiabatic flame temperature

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