Temperature rise by solar radiation

Symbol
$\Delta \theta_{sun}$
Unit
K
Formulae
$D_{o} H_{sun} T_{4iii} \sigma_{sun}$in air
$0.037 H_{sun} - 26.3$in trough
$28.751 e^{- 9.8 d_{t}}$in channel acc. Heinhold
Related
$D_{o}$
$d_{t}$
$H_{sun}$
Used in
$\Delta \theta_{s}$
$\theta_{at_{0}}$
$\theta_{c}$