UniCalc
RU
full version
Own formula
Calculation
Catalog
About
Help
Find a formula
Heat transfer processes
Stefan-Boltzmann law
radiation power emitted by heated solid
P =
W
x
W
Stefan-Boltzmann constant
σ =
5.67E-8
W/(m
2
·K
4
)
emissive capacity of solid
ε =
area of emitting surface equal area of absorption surface
S =
m
2
x
mm
2
cm
2
dm
2
m
2
km
2
a
ha
in
2
ft
2
yd
2
temperature of radiating body
T
1
=
K
x
μK
mK
K
kK
MK
temperature of environment
T
2
=
K
x
μK
mK
K
kK
MK
1. Define values of all variables, besides sought quantity
2. Change units if necessary
3. Click "Calculate"
