EML4304C HW7 - Repeat Problem 14.45 using liquid methanol...

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EML 4304C Thermo-Fluids Design and Lab 1. Problem 14.45, page 606, Fundamentals of Thermodynamics, Sonntag, et al., 6 th edition: “One alternative to using petroleum or natural gas as fuels is ethanol (C 2 H 5 OH), which is commonly produced from grain by fermentation. Consider a combustion process in which liquid ethanol is burned with 120% theoretical air in a steady-flow process. The reactants enter the combustion chamber at 25 °C, and the products exit at 60 °C, 100 kPa. Calculate the heat transfer per kilomole of ethanol.” 2. Problem 14.47, page 606. Fundamentals of Thermodynamics, Sonntag, et al., 6 th edition: “Another alternative to using petroleum or natural gas as fuels is methanol, (CH 3 OH), which can be produced from coal. Both methanol and ethanol have been used in automotive engines.
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Unformatted text preview: Repeat Problem 14.45 using liquid methanol as the fuel instead of ethanol. 3. Problem 14.55, page 607. Fundamentals of Thermodynamics, Sonntag, et al., 6 th edition: Liquid pentane is burned with dry air, and the products are measured on a dry basis as 10.1% CO 2 , 0.2% CO, 5.9% O 2 , remainder N 2 . Find the enthalpy of formation for the fuel and the actual equivalence ratio. 4. Problem 14.49, page 606. Fundamentals of Thermodynamics, Sonntag, et al., 6 th edition: In a new high-efficiency furnace, natural gas, assumed to be 90% methane and 10% ethane (by volume) and 110% theoretical air each enter at 25 C, 100 kPa, and the products (assumed to be 100% gaseous) exit the furnace at 40 C, 100 kPa. Compare this to an older furnace where the products exit at 250 C, 100 kPa....
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