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Mechanical ventilation too high

 
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H.C



Posts: 9
PostPosted: Mon Sep 01, 2008 4:05 pm    Post subject: Mechanical ventilation too high Reply with quote
Dear Sir/Madam

I can’t find why ventilation gives me too much loss. Cause I compare with another software and It’s not the case!

Bloc 1 : Zone2
Zone6
Zone8
Zone18
Bloc 2 : Zone1

Bloc 3 : Zone2
Zone3
Zone8
Zone14

Bloc 4 : Zone5
Zone8
Zone1
Zone13
Zone3

Cooling is also very high :
Bloc 1 : Zone 2
Zone 6
Bloc 3 : Zone 8
Zone 14 (bigger than usual)
Bloc 4 : Zone 1
Zone 13
Zone 3

And temperature mostly reach 28°C, 30°C than 26°C order.

Best regards,

H.C

Projet en ventil unitaire-publication web (01.09.08).dsb
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Laurent_Support



Posts: 292
Location: Vincennes
PostPosted: Thu Sep 04, 2008 3:34 pm    Post subject: Reply with quote
Hello,

Quote:
I can’t find why ventilation gives me too much loss. Cause I compare with another software and It’s not the case!

Did you check if inside and outside air temperature give you correct kW losses ? are they the same in the other software ? This is generally the reason of differences.

Quote:
Cooling is also very high :
...
And temperature mostly reach 28°C, 30°C than 26°C order.

I'm sorry I can't run your model because it takes long time and many post to reply but the temperature rise is explained by the thermal balance. What is heating the more your zones? Why cooling can't fight the gains ? Is plant sizing is manual or auto-sized ? in this first case, cooling power entered may be too weak.

Regards,
_________________
Laurent
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