Air temperature with no load

The meaning of this parameter depends on the calculation method:

The temperature of the air inside the trough with no load depends on the object:

Symbol
$\theta_{at_{0}}$
Unit
$^{\circ}$C
Formulae
$input$in tunnel
$\Delta \theta_{sun} + \theta_{air}$in trough
$\frac{\Delta \theta_{sun}}{\frac{2 h_{t}}{w_{t}} + 2} + \theta_{a}$in channel
Related
$\Delta \theta_{sun}$
$h_{t}$
$\theta_{a}$
Ambient temperature [$^{\circ}$C]
$\theta_{air}$
$w_{t}$
Used in
$\Delta \theta_{0t}$
$\theta_{at}$
$\theta_{at_{L}}$
$\theta_{at_{z}}$