<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META content="MSHTML 5.50.4943.400" name=GENERATOR></HEAD>
<BODY>
<DIV>
<DIV>
<DIV><FONT face=Arial size=2><SPAN
class=429104814-28072006>Hello!</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=429104814-28072006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=429104814-28072006>I try to <SPAN
class=762190915-28072006>design</SPAN> a double skin facade with Trnsys and
Comis.I have cut the double skin facade in 4 zones (corresponding to the 4
storeys). The double skin facade has no mecanical ventilation but
has two openings downward and upward. I don't know how modelize these
openings : I want to a<SPAN class=762190915-28072006>d</SPAN>d a <SPAN
class=762190915-28072006>grid before the air incomming</SPAN>, so I use the type
"duct, entry with screen" in comis. But my simulation in trnsys gives me very
high coupling air flow (20 000 kg/h) and no infiltration (although the % of
screen is 90)<SPAN class=762190915-28072006>. I think it's not good
because</SPAN> <SPAN class=762190915-28072006>in reality, there are dynamic
loss which drop the airflow! </SPAN>Their is also no temperature stratification.
When I replace this duct with an open window, I have more accurate results : air
coupling flow with 6000kg/h (but it seems still high), infiltration in the
extremity of facade and temperature stratification.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=429104814-28072006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=429104814-28072006>Have somebody
already worked on double skin facade? Or does someone know why the screen gives
me bad results?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=429104814-28072006><SPAN
class=117161915-28072006>If you need more information, ask
me.</SPAN></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=429104814-28072006><SPAN
class=117161915-28072006></SPAN></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=429104814-28072006>Thanks a lot for
your answers</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=429104814-28072006>Best
regards</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=429104814-28072006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=429104814-28072006><SPAN
class=117161915-28072006>Delphine</SPAN></SPAN></FONT></DIV></DIV></DIV></BODY></HTML>
<table><tr><td bgcolor=#ffffff><font color=#000000> --------------------<br>
Les donnees et renseignements contenus dans ce message sont personnels, confidentiels et secrets. Toute publication, utilisation ou diffusion, meme partielle, doit etre autorisee. Si vous n'etes pas le bon destinataire, nous vous demandons de ne pas lire, copier, utiliser ou divulguer cette communication. Nous vous prions de notifier cette erreur a l'expediteur et d'effacer immediatement cette communication de votre systeme.<br>
<br>
Any data and information contained in this electronic mail is personal, confidential and secret. Any total or partial publication, use or distribution must be authorized. If you are not the right addressee, we ask you not to read, copy, use or disclose this communication. Please notify this error to the sender and erase at once this communication from your system.<br>
</font></td></tr></table>