Explanation:
excess air is required to ensure adequate mixing of fuel and air, avoid smoke, minimize sg in Coal burning, and to ensure maximum steam output.
Answer:
98,614.82 W/m²
Explanation:

Where;
Q = the amount of heat loss from the pipe
h = the heat transfer coefficient of the pipe = 50 W/m².K
T₁ = the ambient temperature of the pipe = 30⁰C
T₂ = the outside temperature of the pipe = 100⁰C
L= the length of pipe
r₁ = inner radius of the pipe = 20mm
r₂ = outer radius of the pipe = 25mm
To determine the amount of heat loss from the pipe per unit length
From the equation above



= 98,614.82 W/m²
Answer:
Elastic modulus of steel = 202.27 GPa
Explanation:
given data
long = 110 mm = 0.11 m
cross section 22 mm = 0.022 m
load = 89,000 N
elongation = 0.10 mm = 1 ×
m
solution
we know that Elastic modulus is express as
Elastic modulus =
................1
here stress is
Stress =
.................2
Area = (0.022)²
and
Strain =
.............3
so here put value in equation 1 we get
Elastic modulus =
Elastic modulus of steel = 202.27 ×
Pa
Elastic modulus of steel = 202.27 GPa
Answer:
1) free of contaminants, 2) alkaline, and 3) micro-clustered
Explanation:
Hope it helps you