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GeorgeP1
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Homework Statement
A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C4H8) by volume.
It is to be fed to the combustion chamber in 10% excess air at 25°C, where it is completely burnt to carbon dioxide and water. The flue gases produced are to be used to generate 5 bar steam from water at 90°C
Net calorific value (MJ m–3) at 25°C of:
Butane (C4H10) = 111.7 MJ m^3
Butene (C4H8) = 105.2 MJ m^3
Propane (C3H8) = 85.8 MJ m^3
I need help on how to calculate: -
the net calorific value (CV) per m^3 of the fuel/air mix at 25°C ?
the net calorific value (CV) per kmol of the fuel/air mix at 25°C ?
Homework Equations
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The Attempt at a Solution
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Net cv per m3 = 58.65 mJ / m^3
Net cv per kmol = 1466.25 mJ / kmol
These attempts are incorrect but I don't know where I have gone wrong. any help is much appreciated.
thanks in advance
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