[EnergyPlus_Support] Re: heat exchanger:Air to air: general

["fortierengineer" <fortierengineer@xxxxxxxxx>]

I have uploaded the file.  It is called SHback to basics9-21.idf

I am using the Pittsburgh TMY2 weather data.

If it is of any help, currently the active control elements relating 
to the controller:outside air and the heat exchanger:air to air, are 
the set point manager:mixed air and the exchanger supply air outlet 
control (controlled by the "Seasonal Reset Exchanger Air Temp 
Sch").  

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "donbshireyiii" 
<shirey@f...> wrote:
> Please upload your idf file to the EnergyPlus yahoogroups web site
> (http://groups.yahoo.com/group/EnergyPlus_Support/) or send it
> EnergyPlus-Support@g... and we'll take a quick look at it.
> 
> If the temperature of the relief air is greater than the 
temperature
> of the incoming outdoor ventilation air, then you will see a 
positive
> value.
> 
> What weather file are you using?
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Joseph Lewis
> <fortierengineer@y...> wrote:
> > Hello,
> >  
> > I have a heat exchanger:air to air:general in a model that only
> transfers sensible heat between the relief airflow and the outdoor 
air
> flow.  Running it in the summer design day, I have discovered that 
no
> matter what control strategy for the out door air system, there are
> hours where the "Heat Exchanger Sensible Heating Rate" is 
positive.  I
> have looked at the  HVACStandAloneERV_Economizer.idf example for 
help,
>  and it has the same issue.   I have also looked at 
DesiccantCVRh.idf
> and in this file the sensible heating rate is zero for the summer, 
> but if I remove the desiccant unit from the loop you have the same
> issue.  
> >  
> > Is there a control strategy that can be used along with an 
outdoor
> air controller (with economizer) to eliminate this? 
> >  
> > Thank you,
> >  
> > Joe Lewis



------------------------ Yahoo! Groups Sponsor --------------------~--> 
$9.95 domain names from Yahoo!. Register anything.
http://us.click.yahoo.com/J8kdrA/y20IAA/yQLSAA/dkFolB/TM
--------------------------------------------------------------------~-> 

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.
 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> 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/