[Equest-users] No Heating from PVVT Heat Pump

Dakota Kelley dakotak at teliospc.com
Wed Sep 29 09:56:13 PDT 2010


Water-cooled heat pumps, ground loop or not, are considered system type PVVT.  Air-cooled heat pumps are considered type PSZ.  Try changing your system type to PSZ and your heating source to “heat pump”.    

 

You can also create a temporary project and set up an air-source heat pump in the wizard, then go inspect the system type/settings in the detailed interface to see how eQUEST interprets your inputs.

 

Thanks,

 

                                 

DAKOTA KELLEY 

Project Designer | Energy Analyst

                          

                              Office: 214.744.6199                 

                              Cell: 214.280.3825

                              Fax: 214.744.0770    

 

http://www.teliospc.com <http://www.teliospc.com/>          3535 Travis St. Suite 115

dakotak at teliospc.com <mailto:dakotak at teliospc.com>             Dallas, TX 75204                                                     

                                

| MEP ENGINEERING · ENERGY MODELING · LEED CONSULTATION · COMMISSIONING |

 

CONFIDENTIALITY NOTICE: This email is intended only for the use of the individual or entity to which it is addressed, 

And may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you

are not the intended recipient, please email the sender immediately, and delete this email from all computers.  Any 

distribution or other use is strictly prohibited.  Copyright © 2009 Telios Corporation.

 

 

 

 

From: Eddie Corwin [mailto:ecorwin at altanova-energy.com] 
Sent: Wednesday, September 29, 2010 8:43 AM
To: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] No Heating from PVVT Heat Pump

 

So I determined why I was not getting any heating, and the resolutions perplexes me.

 

 I am modeling an Air-to-Air heat pump, so in the air-side system --> Basics tab I selected "NO" for the field "WL/GS Ht Pump".  In doing so, I get no heating out of the system.  When I change the field to "YES"  I now get heating.  Attached are two images showing the field i am referring to, and showing that I have an air-cooled condenser.  Does anyone know why this might be happening.  I am worried that eQuest is treating my HP like a ground or water source HP instead of an air-to-air system.  Any thoughts on the matter would be appreciated.  By the way, I am using eQuest 3.64

 

-Eddie

 

 

________________________________

From: Eddie Corwin <ecorwin at altanova-energy.com>
To: equest-users at lists.onebuilding.org
Sent: Tue, September 28, 2010 5:17:21 PM
Subject: [Equest-users] No Heating from PVVT Heat Pump

I am trying to model a PVVT system, that uses an air-cooled heat pump for heating and cooling.  For some reason, the system refuses to supply any heating.  When I change the condenser type from air-cooled to water-cooled, the system WILL provide heat.  Has anyone experienced problems like this, or has someone successful modeled a PVVT air-cooled heat pump?  I have attached my IDF and PD2 file for review.  

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20100929/daea39c1/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/octet-stream
Size: 6649 bytes
Desc: image001.emz
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20100929/daea39c1/attachment-0002.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/png
Size: 3468 bytes
Desc: image002.png
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20100929/daea39c1/attachment-0002.png>


More information about the Equest-users mailing list