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RE: [EnergyPlus_Support] Compact System heat recovery and Ventilation between zone

You should be using MIXING objects for flows between zones instead of
VENTILATION. 

 

 

 

________________________________

From: EnergyPlus_Support@xxxxxxxxxxxxxxx
[mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of laurentvidal50
Sent: Monday, April 07, 2008 10:27 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Compact System heat recovery and
Ventilation between zone

 

Hello,

In a model I've got a unitary single zone system with heat recovery
and I try to model air flow between zones (not calculated).
To easily set theses air flows I use VENTILATION objects.

For a winter simulation, my totals are not coherent. I mean that
loses+internal loads+heating (sensible zone/syst) < 0 (very negative).
But temperatures are exactly what I want.
If I don't use Ventilation, the equation is near to zero (probably
thermal mass effect).

I wonder if I have well understood what to add with what!

Is zone sensible heating must be completed by another output (recovery)?
In zone heat balancing, is VENTILATION occurs before or after air is
extracted to the heat recovery?
Same question for supply air, is it added before or after Ventilation?

Thank you,
Laurent

 



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