[Equest-users] Water Source Heat Pumps as Dedicated Outside Air Units

[Bishop, Bill]

You can model a water-to-air heat pump using PSZ, PVAVS and PVVT by specifying a CONDENSER-TYPE -> WATER-COOLED and attaching a CIRCULATION-LOOP of type CW or WLHP.

Best regards,
Bill

[cid:image002.png at 01CD11B8.1A0F08E0]<mailto:wbishop at pathfinder-ea.com>


From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of David Eldridge
Sent: Tuesday, April 03, 2012 4:32 PM
To: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Water Source Heat Pumps as Dedicated Outside Air Units

Can you use PVVT, but configured as you would have setup the heat pump?

David


David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP
Project Manager

Direct: (847) 316-9224 | Fax: (847) 328-4550

Grumman/Butkus Associates | 820 Davis Street, Suite 300 | Evanston, IL 60201
Energy Efficiency Consultants and Sustainable Design Engineers



From: equest-users-bounces at lists.onebuilding.org<mailto:equest-users-bounces at lists.onebuilding.org> [mailto:equest-users-bounces at lists.onebuilding.org<mailto:equest-users-bounces at lists.onebuilding.org>] On Behalf Of Jesse Eisenhart
Sent: Tuesday, April 03, 2012 3:21 PM
To: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: Re: [Equest-users] Water Source Heat Pumps as Dedicated Outside Air Units

I guess I stumped everyone.  :)

Jesse Eisenhart
Energy Services | Project Manager

[Description: LOGO_for_Email-4]VIRIDIAN|Sustainable Building Consulting
100 Gamble Road, Little Rock, AR 72211
o: 501.227.0648, f: 501.227.8648
jesse at ViridianUSA.com<mailto:jesse at ViridianUSA.com> | www.ViridianUSA.com<http://www.viridianusa.com/>

From: equest-users-bounces at lists.onebuilding.org<mailto:equest-users-bounces at lists.onebuilding.org> [mailto:equest-users-bounces at lists.onebuilding.org<mailto:equest-users-bounces at lists.onebuilding.org>] On Behalf Of Jesse Eisenhart
Sent: Tuesday, April 03, 2012 11:07 AM
To: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: [Equest-users] Water Source Heat Pumps as Dedicated Outside Air Units

Hello All!

I am having an issue regarding a dedicated outside air unit that takes advantage of a condensing water loop.

When modeled as a water source heat pump (TYPE = HP), eQUEST gives me an error saying this system type is not eligible for "OA-FROM-SYSTEM".

One of my thoughts is to

*         model all the units served by the outside air unit with no fresh air

*         model the dummy zone with a summation of the fresh air required by the spaces served

But then that might interfere with a proper simulation of mixed air temps going into the space.

Thoughts?




***ERROR***********************************************************************

             OSAU                             is not a legal SYSTEM-TYPE to be

             an OA-FROM-SYSTEM. SZRH/PSZ/RHFS/MZS/PMZS/DDS/VAVS/PVAVS/PVVT

             RHFS/IU/PIU/PTGSD/EVAP-COOL/RESYS2 are allowed.




Jesse Eisenhart
Energy Services | Project Manager

[Description: LOGO_for_Email-4]VIRIDIAN|Sustainable Building Consulting
100 Gamble Road, Little Rock, AR 72211
o: 501.227.0648, f: 501.227.8648
jesse at ViridianUSA.com<mailto:jesse at ViridianUSA.com> | www.ViridianUSA.com<http://www.viridianusa.com/>

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