[TRNSYS-users] Convection in a simple two storey zone

[pseudomino at gmx.com]

Hi,

 In Trnsys 17, I made a very simple test : two little air-nodes superposed, forming part of a thermal zone.
 There is only one windows facing south, at the first floor. I ditn't made anything else.

 *Case 1 : Simple radiation model*
 Quite realistically, the second floor is warmer.

 *Case 2 : Detailed radiation model*
 The 2 air-nodes have their temperatures centered around the same value and very near, except that the first floor has more extreme temperature variations.

 I want to illustrate the hot air elevation by a simple example, but I'm not sure of the phenomenon that are taken into account.

 Thank you !
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trnsys-users-onebuilding.org/attachments/20110414/0e570655/attachment-0005.htm>