The thermal radiation is following the laws of PLANK and STEFAN-BOLTMANN:

Radiate energy R, on display space of 1 squared M (meter), it ís according to absolute temperature T
and this is raising to the fourth power.it ís according to emissif radiating capacity too e.
R = e. 5,67. 10 puissance -8 .T puissance 4
R = radiate energy (W/M2)


e = emissif radiating capacity ( dépendent of panel: example: flat black panel e = 0, 9)

T = absolute temperature of panel (°K)


5,67. 10 puissance -8 = Constant of STEFAN- BOLTZMANN
R (sun)

R( transmitted)

panel

- In our situation, with greenhouse effect, (see solar panel) there are lesser transmitted energy.
T in KELVIN degree (in outer space, there are about 3°K), we must know Helium pressure,
If we want to know the Helium temperature ( See Helium).
At 0°C, it isn ítn í reference himself, it will be possible to find the solar energy, even at the north pole.
- At 0°C, it isn ítn í reference himself, it will be possible to find the solar energy, even at the north pole.
Remark:
1 calorie (cal) = 4,18 joules (J) , 1Wh = 3600 J .

ABSORPTION AND REFLECTION OF ENERGY

INDEX

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