2. An alcogas mixture made up of 85% gasoline and 15% ethanol is used as fuel for an engine in the presence of 17.05 m' air/kg alcogas supplied essentially dry at 30°C and 740 mm Hg. 80% of the C burns to CO2 , the rest to CO; molal ratio of H2 to CO is 1:2. Assume that gasoline has the same composition as a mixture of iso-octane-heptane with 95% octane number. Use a density of 0.6918 g/mL for iso-octane and 0.684 g/mL for n- heptane. Calculate: a) Orsat analysis of the exhaust gas b) % excess air (36.15%) (8.18% CO2, 2.04% CO, 1.02% H2)
2. An alcogas mixture made up of 85% gasoline and 15% ethanol is used as fuel for an engine in the presence of 17.05 m' air/kg alcogas supplied essentially dry at 30°C and 740 mm Hg. 80% of the C burns to CO2 , the rest to CO; molal ratio of H2 to CO is 1:2. Assume that gasoline has the same composition as a mixture of iso-octane-heptane with 95% octane number. Use a density of 0.6918 g/mL for iso-octane and 0.684 g/mL for n- heptane. Calculate: a) Orsat analysis of the exhaust gas b) % excess air (36.15%) (8.18% CO2, 2.04% CO, 1.02% H2)
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:2. An alcogas mixture made up of 85% gasoline and 15% ethanol is used as fuel for an
engine in the presence of 17.05 m air/kg alcogas supplied essentially dry at 30°C and 740
mm Hg. 80% of the C burns to CO2 , the rest to CO; molal ratio of H2 to CO is 1:2. Assume
that gasoline has the same composition as a mixture of iso-octane-heptane with 95%
octane number. Use a density of 0.6918 g/mL for iso-octane and 0.684 g/mL for n-
heptane. Calculate:
a) Orsat analysis of the exhaust gas
b) % excess air (36.15%)
(8.18% CO2, 2.04% CO, 1.02% H2)
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