[Equest-users] eQuest Activating the Packaged Desiccant Option

[Bruce Easterbrook]

     The DOAS will be the system you need to add the ERV to.  I normally 
do this in the DD wizard and that was what the previous instructions 
were for.  Take a copy and go back to the DD wizard, it will warn you 
that you are going to lose information you have added in the detailed 
edit and you will.  Go back anyway, you have a copy to use later in the 
detailed edit.  Follow my instructions to turn on the ERV, you may or 
may not want to set it up as stand alone, that will depend on how you 
are modelling your system.  Once you have the enthalpy wheel turned on 
you should be able to select your custom curve and replace the default 
one Equest is using.  Run your simulation and then compare your run in 
the wizard to your detailed edit file.  Before you start adjusting the 
detailed edit file make another copy.  You should be able to look at 
your summary sheets on the 2 runs and determine which settings are 
different and adjust the detailed edit so it is similar the the output 
of the DD wizard.  I have never done it this way but I think once you 
create a template in the DD wizard to refer to you should be able to 
spot the differences in the detailed edit and make changes to get you 
back on track.  You might also steal portions of the INP file from the 
DD wizard and place them in the detailed edit.  If you don't have too 
much information in the detailed edit added you could just restart with 
the DD wizard.  Make sure you use copies so you don't lose what you 
have.  Also note a DOAS can be tricky in Equest.  Make sure your 
difficulties are not due to how you have modelled it.  Good luck.
     Just as a general observation, don't get into the detailed edit too 
quickly.  The DD wizard should handle 95% of all situations, if you 
can't get it to run in the DD wizard going into the detailed edit will 
just magnify your problems.  I stay here and continually go back into 
the DD wizard to tune my model.  If you don't add anything in the 
detailed edit you have nothing to lose.  To do this go to the project & 
site tab, go to the top and select mode, select wizard data edit.  Using 
this method I incrementally build my model, making sure each addition 
runs.  It makes it easier to find errors because you add to the model in 
sections. If it doesn't run you have a smaller number of variables to 
work on to get it running.  I just use the detailed edit to modify 
control points etc to fine tune everything but that can also be done by 
going back into the wizard.
Bruce Easterbrook P.Eng.
Abode Engineering


On 18/08/2010 11:26 AM, Kathryn Kerns wrote:
>
> Bruce, I am trying to enable the Packaged Desiccant option in Detailed 
> Edit. The system I want to model is a packaged unit to be added to a 
> DOAS.  This unit contains proprietary desiccant wheels and heaters. It 
> has performance curves. I wish to make performance curves and activate 
> them in the Detailed Edit mode Packaged Desiccant tab. The curves that 
> I made show up as selectable in the Packaged Desiccant tab, along with 
> other curves, but I can't get any of these curves to appear as a 
> selected in the Packaged Desiccant tab. I can't get any of the curves 
> selections that show up in the drop down menus on this tab to select, 
> either. I also can't access the library or create selection that shows 
> up in the drop down menu.
>
> So my question is, what do I need to do to get the Packaged Desiccant 
> tab to work?
>
> **Kathryn Kerns**
>
> /*/Systems Specialist/*/
>
> /*/BCE/*/** Engineers, Inc.**
>
> **| Ph: 253.922.0446 | Fx: 253.922.0896 |**
>
> ------------------------------------------------------------------------
>
> *From:* Bruce Easterbrook [mailto:bruce5 at bellnet.ca]
> *Sent:* Wednesday, August 18, 2010 6:08 AM
> *To:* Kathryn Kerns
> *Cc:* Brian Fountain; equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] eQuest Activating the Packaged Desiccant 
> Option
>
> I'm not quite sure what you are getting at or want to do.  Speculating 
> I would assume you are working with outside air and heat recovery.  If 
> that is the case, in the DD wizard, under the air side HVAC tab right 
> click on your system, select properties.  Go to outdoor air, heat 
> recovery 1, ERV device installed, select yes, in the pop-up select 
> enthalpy wheel.  You can also select stand alone in one of the tabs as 
> well.  There are various performance items you can specify, and I 
> would assume Equest would then allow you to select a performance curve 
> as well.
> Bruce Easterbrook P.Eng.
> Abode Engineering
>
>
> On 17/08/2010 06:34 PM, Kathryn Kerns wrote:
>
> I can do that, and indeed I activated the the liquid heat pump option 
> to get some idea what kind of dew point I was looking for. But that is 
> not really what I want and the solid desiccant doesn't option doesn't 
> have curves you can adjust (at least none that I could find). So you 
> can't get the Packaged Desiccant to work either? Anyone else have success?
>
> ------------------------------------------------------------------------
>
> *From:* Brian Fountain [mailto:bfountain at greensim.com]
> *Sent:* Tue 8/17/2010 2:06 PM
> *To:* Kathryn Kerns
> *Cc:* equest-users at lists.onebuilding.org 
> <mailto:equest-users at lists.onebuilding.org>
> *Subject:* Re: [Equest-users] eQuest Activating the Packaged Desiccant 
> Option
>
> I could not enable the packaged desiccant curves but setting the 
> "maximum humidity" value on the basics tab of the system enables the 
> Desiccant Performance Curves and you can set your add on desiccant 
> type to Solid Vent Air 1 and select the appropriate control 
> mode/configuration to (hopefully) give you the closest system.
>
> Good luck!
>
> Kathryn Kerns wrote:
>
> Does anybody know how to activate the Packaged Desiccant option in 
> eQuest? I have created some curves that I think might work and they 
> show up as part of the possible selectable curves when I click on the 
> Packaged Desiccant Tab curves individually, but I can't get the Design 
> Wizard to select this curve or indeed, any curve from the possible 
> list that appears. What am I missing? Some other part of another tab 
> that needs to be activated? If so, where? I just assumed that this 
> option worked and if I could make curves, I could use it. Maybe it 
> doesn't work? If this is true, I am going to be peeved.
>
> Thanks for listening.
>
>
>
> ------------------------------------------------------------------------
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