There are 20 kg of flue gases formed per kg of fuel oil burned in the combustion of a fuel oil C12H26- What is the excess air in percent?
There are 20 kg of flue gases formed per kg of fuel oil burned in the combustion of a fuel oil C12H26- What is the excess air in percent?
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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![1. There are 20 kg of flue gases formed per kg of fuel oil burned in the combustion of a fuel oil C12H26-
What is the excess air in percent?
2. A gaseous fuel mixture has a molal analysis:
H₂ = 14%
CH4 = 3%
CO = 27%
0₂ = 0.6%
CO₂=4.5%
N₂ = 50.9%
Determine the theoretical air-fuel ratio for complete combustion on molal basis.
3. The following is an analysis of coal in percent:
C = 74%
0₂ = 8%
S = 1%
H₂ = 6%
N₂ = 1.6%
Ash = 9.4%
If burned in a boiler, the coal produces the following Orsat analysis in percent:
CO₂ = 12%
CO = 0.1%
0₂= 6.5%
4. A fuel oil is burned with 50% excess air. What is the volume rate of flow in m³/min of the wet products
at a pressure of 102 kPa and a temperature of 350°C when the fuel is burned at the rate of 45 kg/min?
Assume that the combustion requirements of the fuel oil are similar to those of C12H26.
5. A test run using this coal showed a dry products of combustion analysis by volume of nitrogen equals
82.5%, molecular weight of 30 kg flue gas per mol dry flue gas, and the weight of this dry flue gas is
15.03 kg per kg of coal. The actual ash-pit sample was 0.15 kg per kg of coal, of which 20% was carbon.
What is the percentage excess air supplied to the fuel combustion in percent?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5f8501fa-9558-4e20-99de-a523945afb4f%2F09185ca0-61d8-4fd8-b6e3-0a4d6aa61410%2Fx3fnxv_processed.png&w=3840&q=75)
Transcribed Image Text:1. There are 20 kg of flue gases formed per kg of fuel oil burned in the combustion of a fuel oil C12H26-
What is the excess air in percent?
2. A gaseous fuel mixture has a molal analysis:
H₂ = 14%
CH4 = 3%
CO = 27%
0₂ = 0.6%
CO₂=4.5%
N₂ = 50.9%
Determine the theoretical air-fuel ratio for complete combustion on molal basis.
3. The following is an analysis of coal in percent:
C = 74%
0₂ = 8%
S = 1%
H₂ = 6%
N₂ = 1.6%
Ash = 9.4%
If burned in a boiler, the coal produces the following Orsat analysis in percent:
CO₂ = 12%
CO = 0.1%
0₂= 6.5%
4. A fuel oil is burned with 50% excess air. What is the volume rate of flow in m³/min of the wet products
at a pressure of 102 kPa and a temperature of 350°C when the fuel is burned at the rate of 45 kg/min?
Assume that the combustion requirements of the fuel oil are similar to those of C12H26.
5. A test run using this coal showed a dry products of combustion analysis by volume of nitrogen equals
82.5%, molecular weight of 30 kg flue gas per mol dry flue gas, and the weight of this dry flue gas is
15.03 kg per kg of coal. The actual ash-pit sample was 0.15 kg per kg of coal, of which 20% was carbon.
What is the percentage excess air supplied to the fuel combustion in percent?
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