# Temperature increase of air

This is the temperature rise of the air inside an air-filled trough or channel or j-tube/riser.

Symbol
$\Delta \theta_{air}$
Unit
K
Formulae
 $T_{tr} W_{sum}$ in trough $T_{e} W_{sum}$ in channel
Related
$T_{e}$
$T_{tr}$
$W_{sum}$
Used in
$\theta_{at}$