A gaseous fuel composed purely of a saturated hydrocarbon (CnH2n+2) is burned with excess air. Orsat analysis of the stack gas shows that it is composed of 9.24% CO2, 0.97% CO, 0.20% H2, 5.13% 02, and 84.46% N2. Air is supplied at 32°C, 745 torr and 83% relative humidity and the stack gas leaves at 750 torr. Calculate the following: v Percent excess air v AFR by mass v Molecular formula of the hydrocarbon v Dew point of the stack gas in °C

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
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A gaseous fuel composed purely of a saturated hydrocarbon (CnH2n+2) is burned with excess air. Orsat analysis of the stack gas
shows that it is composed of 9.24% CO2 0.97% CO, 0.20% H2, 5.13% O2, and 84.46% N2. Air is supplied at 32°C, 745 torr and 83%
relative humidity and the stack gas leaves at 750 torr. Calculate the following:
v Percent excess air
v AFR by mass
v Molecular formula of the hydrocarbon
v Dew point of the stack gas in °C
Transcribed Image Text:A gaseous fuel composed purely of a saturated hydrocarbon (CnH2n+2) is burned with excess air. Orsat analysis of the stack gas shows that it is composed of 9.24% CO2 0.97% CO, 0.20% H2, 5.13% O2, and 84.46% N2. Air is supplied at 32°C, 745 torr and 83% relative humidity and the stack gas leaves at 750 torr. Calculate the following: v Percent excess air v AFR by mass v Molecular formula of the hydrocarbon v Dew point of the stack gas in °C
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