Hi everyone,
I ran 3 different simulations with TRNSYS, in which the only parameter I changed was the convective heat transfer coefficient CHTC (as seen in picture 1). It seems that nothing really differ from a simulation to another, though I tried with h=1, then h=100 (see picture 6 which shows the airnode temperature). Then, in order to identify the problem, I set as output the HCONV (type 108) and the resistance between the surface and the starnode Req (type 86).
Two observations :
1) HCONV does not correspond to the CHTC I set in TRNBUILD (even by dividing it by the surface area)
2) Req is very close to 0. I guess that's why I observe no real difference between each simulation.
So I've got a few questions:
1) What am I actually observing with HCONV?
2) Why is Req close to 0 ? And what does it mean? (I assume that when Req=0, there is no heat transfer by convection between the surface and the airnode)
Thanks in advance for the clarification
--
Wirich FREPPEL
Ingenieur Doctorant en Recherche & Developpement
Centre R&D de Noirot - Groupe Muller
8 rue Louis Ampere, 02030 Laon
+33 (0)3 23 27 31 99
_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@lists.onebuilding.org
http://lists.onebuilding.org/listinfo.cgi/trnsys-users- onebuilding.org