[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [EnergyPlus_Support] Hygro-regulated opening
Loic:
Here are my answers below your questions.
1- is it possible to make the surface object variable according to the
relative humidity? (maybe adapting the program?)
No. The program is not designed to have RH control. Do you have real
examples?
2- or is there an other way to make it?
I need to understand your thoughts more. Do you want modulate an opening or
just make it on/off based on RH?
3- given that the goal of the variable aperture is to modulate the air
volume, I would like the fan to be "constant pressure difference": is it
realizable?
The current exhaust fan is a constant volume fan. What is fan performance
for a constant pressure difference fan? Do you have real applications?
Thanks.
Lixing
----- Original Message -----
From: "aburrrrido" <aburrrrido@xxxxxxxxx>
To: <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Friday, April 24, 2009 4:57 AM
Subject: [EnergyPlus_Support] Hygro-regulated opening
Hi all,
I am currently trying to model a simple ventilation system based on an
exhaust fan and outdoor air variable aperture paths that open according to
the indoor relative humidity.
As I didn't find any object to directly do this, I am trying to use an
AirflowNetwork:MultiZone:Component:DetailedOpening object and its
AirflowNetwork:multizone:Surface object to model the variable aperture. But
the Ventilation Control Mode of the surface object can only be done via
Temperature or Enthalpy controls (or other not interesting for my purpose),
and not via humidity.
So my questions are:
1- is it possible to make the surface object variable according to the
relative humidity? (maybe adapting the program?)
2- or is there an other way to make it?
A second problem is that doing a simulation with a temperature controlled
variable aperture, it appears that when the exhaust fan is on, the opening
factor of the AirflowNetwork:multizone:Surface object has no influence on
the air volume. It seems logical as the exhaust fan is treated as a constant
volume fan.
So the issue is:
3- given that the goal of the variable aperture is to modulate the air
volume, I would like the fan to be "constant pressure difference": is it
realizable?
Many thanks in advance for your help.
Loïc
------------------------------------
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are not allowed -- please post any files to the appropriate
folder in the Files area of the Support Web Site.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the
Documentation link and press the "search" button.
Yahoo! Groups Links
------------------------------------
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/EnergyPlus_Support/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/EnergyPlus_Support/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx
mailto:EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/