A preheater involves the use of condensing steam at 100o C on the inside of a bank of tubes to heat air that enters at I atm and
1 answer:
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Answer:
when 5% excess air is supplied, moles of air supplied/moles of fuel =
Explanation:
Equivalence ratio = 0.6
Equivalence ratio = Actual air to fuel ratio (AAFR)/ stoichiometric air to fuel ratio SAFR
combustion reaction of propane is
From above reaction, 1 mole of propane, from the reaction, 5 moles of oxygen required,
we know that air contains 21% O_2 and 79% N_2,
Therefore, moles of air based on stoichiometry
Theoretical air to fuel ratio
Given
Actual Air Fuel Ratio
when 5% excess air is supplied, moles of air supplied/moles of fuel =
Answer:
Explanation:
This question will be solved with the help of diagram (see attachment)
Given:
Δ∅ = 0.50 degrees (correction)
BC = 800 mm
AC = 600 mm
Solution:
We use coordinate system with point C as origin (0,0)
Hence,
Point A = (600,0)
Point B = (0,800)
The change in length or displacement can be calculated BB' :
BB' = BC * tan (Δ∅) = (800 mm) * tan (0.5) = 6.9815 mm
Hence, Point B' = (-6.9815,800) and we calculate distance A and B
We calculate distance A and B'
Normal Strain in AB is:
The solution is :
