[Equest-users] Buildign seems to compile, but simulation will not run...HELP! (Paul Brooks)

Paul Brooks equestpaul at yahoo.com
Mon May 10 10:08:01 PDT 2010


Eddie, James, and all:

Guess that is what happens when you do not look at the output file.....:-(

Thanks for getting me straight!




________________________________
From: Eddie Corwin <ecorwin at altanova-energy.com>
To: equest-users at lists.onebuilding.org
Sent: Mon, May 10, 2010 12:54:03 PM
Subject: Re: [Equest-users] Buildign seems to compile, but simulation will not run...HELP! (Paul Brooks)


Dear Paul:

I downloaded and tried to run your model, and I got the same error that you did.  After the simulation fail, you are left with the options to return to the building description or to open the simulation output file.  If you open the simulation output file you will see, in the "ATTN" report, that you have the following problem:



 ***ERROR***********************************************************************
             Loop: DHW Plant 1 Loop (1)             has a pump, but no return
             flow. If a DHW loop, specify the LOOP-RECIRC-FLOW
             or the LOOP-MIN-FLOW to create a return flow


I would suggest simply removing the pump from the hot water heater (ignore the warnings, your pump is auto-sized anyway).  

Your other option would be to move the pump from the water heater to the DW Loop, and then to give the loop a recirculation flow.  Because this is a DHW loop, there is no recirculation flow (all of the flow goes down the drain after it is used).  When prompted for the recirculation flow, you can enter a 0.   

I would also check the geometry of your building.  Your shells labeled EL1, EL2, and EL6 all have Below-Grade floor constructions.  From what I can tell, these floors will not be in contact with the earth.  A useful trick that I use to make sure that I don't have roofs in the middle of my building, floors and a ceilings overlapping each other, or below grade walls where they do not belowg is the following: 

Go to the 3D View
From there, right click on the black background.  
There, you can select to view the constructions and windows by their construction type.  

I hope this was useful

-Eddie __________________________________________________________
Eddie Corwin, Energy & Sustainability Engineer
ALTANOVA - www.altanova-energy.com
41-41 24th Street - 4th Floor - Long Island City, NY 11101


T: (347) 410-9049
E: ecorwin at altanova-energy.com





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To: equest-users at lists.onebuilding.org
Sent: Mon, May 10, 2010 12:03:26 PM
Subject: Equest-users Digest, Vol 26, Issue 22

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Today's Topics:

  1. Re: Heat not working! (Sheila)
  2. Buildign seems to compile,    but simulation will not
      run...HELP! (Paul Brooks)
  3. Re: Buildign seems to compile,    but simulation will not
      run...HELP! (John Aulbach)
  4. Re: Buildign seems to compile,    but simulation will not
      run...HELP! (Paul Brooks)
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