mech3020-s11-hw15 - The following problems are due later in...

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MECH 3020 Thermodynamics II: Homework Assignment # 15 1. (Due Monday) Calculate the reversible work, per unit mass of fuel, that can be derived from the following fuels via a reversible oxidation process at 298 K: hydrogen gas, methane, carbon monoxide, and methanol (these fuels are all relevant with regard to fuel cell operation). Compare the reversible work to the LHV for the fuel: what are the implications with regard to the use of fuels in fuel cells compared to their use in heat engines?
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Unformatted text preview: The following problems are due later in the week 2. Methane is burned with 50% theoretical air (i.e., half the stoichiometric amount). The products are at 1000 K and 1 atm. Assuming chemical equilibrium and using the equilibrium constant data given in the book or the property data sheet, calculate the mole fractions of the products. 3. Octane is burned with 20% excess air. The products are at 1600 K. Estimate the CO mole fraction for total pressures of 0.1, 1 and 10 atm. 1...
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This note was uploaded on 09/24/2011 for the course MECH 3020 taught by Professor Mackowski during the Spring '11 term at Auburn University.

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