Sildymas
Sildymas

Wavelengths

Wave lengths of thermal emission of technical item elements and elements participating in heat transfer process

 

Element name

Maximum temperature, t°C max

Wave length λ, μm
1. Convection radiator, convectors, water heating system’s pipe

+90°

7.9
2. Infrared ray heating film

+50°

9.0
3. Human body

+36,6°

9.35
4. Room ceiling, when air tо at human respiratory level is +22°С

+30°

9.48
5. Room wall

+22°

9.7

PLEN emission is a thermal emission of long-wave infrared range, a wave length of which is close to the emission range of the human body:  PLEN – 9 μm, the human body’s – 9.35 μm.