[TRNSYS-users] Trombe wall modeling with Type36

[Antoine Gautier via TRNSYS-users]

Hi 

 

I use Type36 in Mode 2 (air flowrate computed internally, glazing
transmittance as an input) to model a naturally vented Trombe wall.

I use the multi-layer detailed window model from Type56 to compute the solar
transmittance B3_QSTRNS/B3_QSEXT and U-value UWIN of the window (at each
time step).

Looking at the source code of Type36 I cannot figure out how the model
accounts for the inward-flowing portion of the solar radiation absorbed by
the window. Therefore I would rather provide SHGC
(B3_QSTRNS+B3_QSHFPR)/B3_QSEXT instead of solar transmittance as an input to
Type36. 

The drawback being all this inward-flowing portion considered as radiation
absorbed by the massive wall. However the uncertainty (assuming all
inward-flowing portion is radiative) seems lower than totally neglecting the
inward-flowing portion.

Would somebody have a recommendation to share?

 

Best

--

Antoine Gautier

Solamen

+33 6 58 24 02 60

antoine.gautier at solamen.fr

 

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