Temperature of heat source

Symbol
$\theta_{hs}$
Unit
$^{\circ}$C
Formulae
$\Delta \theta_{p} v_{4} - \Delta \theta_{x} \left(v_{4} - 1\right) + W_{hs} v_{4} \left(T_{4db} + T_{4iii}\right) + \theta_{a}$buried heat source
$\frac{T_{sa} T_{st} W_{hs} + T_{sa} \theta_{t} + T_{st} \theta_{at}}{T_{sa} + T_{st}}$heat source in tunnel
$T_{4iii} W_{hs} + \theta_{at}$heat source in trough
Related
$\Delta \theta_{p}$
$\Delta \theta_{x}$
$\theta_{a}$
Ambient temperature [$^{\circ}$C]
$\theta_{at}$
$\theta_{t}$
Used in
$\theta_{e}$