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//(13.15) Devise and evaluate an exergetic efficiency for the internal combustion engine of Example 13.4. For the fuel, use the chemical exergy value determined in Example 13.12(a).
//solution
mFdot = 1.8e-3 //fuel mass flow rate in kg/s
ech = 47346 //in kj/kg, from example 13.12(a)
Wcvdot = 37 //power developed by the engine in kw
Efdot = mFdot*ech //rate at which exergy enters with the fuel in kw
epsilon = Wcvdot/Efdot //exergetic efficiency
printf('the exergetic efficiency is: %f',epsilon)
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