[TRNSYS-users] TR: longwave radiation mode with 2 airnodes

On the same topic…

I am trying to model a fully glazed wall with fully transparent window between the 2 airnodes to account for radiative transfers.

When I save the building file I get the message: “.inf etc. generated successfully”.

However when I launch the simulation I get the message in attachment which appears in TRNEXE window.

If you check the .inf file you will notice that adjacency is well defined for surfaces 9, 11, 12 and 13 despite the previous message error.

Eventually the simulation goes on but the results tend to convince me that radiative transfers are not correctly calculated between the 2 airnodes.

Do you have any idea to solve this problem?

Thanks a lot.

Regards

Antoine Gautier
Solamen
+33 6 98 78 56 46

antoine.gautier@solamen.fr

De : Antoine Gautier [mailto:antoine.gautier@solamen.fr]
Envoyé : jeudi 16 juin 2011 14:27
À : 'trnsys-users@cae.wisc.edu'
Objet : longwave radiation mode with 2 airnodes

Dear all

I understand from the user manual §5 that longwave radiation exchange is not taken into account between 2 airnodes of the same zone under standard (starnet) or “one node” radiation mode.

Could you please confirm my understanding?

Then what is the best strategy to transfer internal gains and radiative heating flux (e.g. from active layer) to the other airnode of the same zone when not using 3D data?

Thanks a lot for your help.

Best regards

Antoine Gautier
Solamen
+33 6 98 78 56 46

antoine.gautier@solamen.fr