[Equest-users] CHW error message

[Varkie C Thomas]

Attached is an article on cold air distribution. UW-Madison-Extension used to have a course on this.


----- Original Message ----- 
From: James Hansen <JHANSEN at ghtltd.com> 
Date: Thursday, December 15, 2011 4:42 pm 
Subject: RE: [Equest-users] CHW error message 
> Does anyone know if there is a way to bypass or ignore this error? 
> I've worked on a few projects recently where we've been able to get 
> close to a 46 degree LAT from an AHU with 42 degree water.  Not a big deal I 
> guess, but it would be nice to be able to be only 4 degrees above CHW 
> temp. 
> 
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> James Hansen, P.E., LEED AP 
> Senior Associate 
> 1010 N. Glebe Road, Suite 200 
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> 
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> 
> From: equest-users-bounces at lists.onebuilding.org 
> [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of 
> VarkieC Thomas 
> Sent: Thursday, December 15, 2011 5:44 PM 
> To: Robby Oylear 
> Cc: equest-users at lists.onebuilding.org 
> Subject: Re: [Equest-users] CHW error message 
> 
> 
> 
> Robby: This project is being done by an architect who used DD.  I 
> lookedfor the error in CHW plant and forgot to look at HVAC supply 
> temps.  I 
> was mistaken, the Detailed Edit does allow you to set CHWS temp 
> but not 
> SD and DD.  Varkie 
> 
> 
> 
> ----- Original Message ----- 
> 
> From: Robby Oylear <robbyoylear at gmail.com> 
> 
> Date: Thursday, December 15, 2011 4:29 pm 
> 
> Subject: Re: RE: [Equest-users] CHW error message 
> 
> > Whoops, here's the image I meant to send with the detailed edit 
> > screen:[image: image.png] 
> > 
> > On Thu, Dec 15, 2011 at 2:29 PM, Robby Oylear 
> > <robbyoylear at gmail.com> wrote: 
> > 
> > > Varkie, 
> > > 
> > > On wizard screen 3 of 3 under "CHW Plant Equipment" the 
> setpoint is 
> > > defined.  The default is 44 deg F. 
> > > 
> > > [image: image.png] 
> > > 
> > > In detailed edit mode this setpoint can be seen on the 
> > "Circulation Loop 
> > > Properties" screen: 
> > > [image: image.png] 
> > > 
> > > On Thu, Dec 15, 2011 at 2:22 PM, Varkie C Thomas 
> > <thomasv at iit.edu> wrote: 
> > > 
> > >> Kelsey, Robby, 
> > >> 
> > >> Thanks.  The supply air temp was too low.  What CHWS temp 
> does 
> > eQUEST>> assume?  This should be an input value too, besides 
> temp 
> > rise.>> 
> > >> Varkie 
> > >> ** 
> 
> 
> 
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> 
> 
> 
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