AME436-S08-PS1

AME436-S08-PS1 - AME 436 Problem Set #1 Assigned: 2/1/08...

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Assigned: 2/1/08 Problem Set #1 Due: 2/8/08 at 4:30 pm in my office mailbox (OHE 430J) (email or fax to me at 213-740- 8071 if you’re off campus, DEN students can fax to the usual number) Note: some of the special symbols on this page seem to show up properly only with Internet Explorer and not other web browsers in the html version, but everything looks fine in the pdf version. Problem #1 (stoichiometry, heating values) a) For the following fuel/oxidant combinations and presumed products balance the following reactions and calculate the stoichiometric fuel to oxidant ratios on a molar basis and on a mass basis: Fuel + oxidant Presumed products C 3 H 8 + air CO 2 , H 2 O and N 2 C 3 H 8 + air CO, H 2 and N 2 C 3 H 8 + N 2 O CO 2 , H 2 O and N 2 C 8 H 18 + NH 4 NO 3 (ammonium nitrate) N 2 , H 2 O and CO 2 CH 3 NO 2 (nitromethane) + air CO 2 , H 2 O and N 2 b) For the stoichiometric fuel/oxidant/product combinations above, calculate the heating value in Joules per kg of fuel. You'll need the enthalpies of formation and molecular weights for these species. Watch units – kilojoules vs. Joules, kilograms vs. grams. Species Δ h f o (kJ/mole) Mole. Wt. (g/mole) Species Δ h f o (kJ/mole) Mole. Wt.
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AME436-S08-PS1 - AME 436 Problem Set #1 Assigned: 2/1/08...

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