What is the air-fuel ratio (mass basiS) at 20 7% excessS al
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:Butane (C4H10) is completely combusted with air.
All of the questions on this page refer to this process.
Air contains 21% oxygen (O2) and 79% nitrogen (N2) on a molar basis.
Element
Symbol
Molar Mass (kg/kmole)
Hydrogen
Carbon
C
12
14
Nitrogen
Охуgen
16
mair
AF =
%3D
Mfuel
Excess Air = % of Theoretical (Stochiometric) Air - 100 %
What is the air-fuel ratio (mass basis) at 200 % excess air?
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