[Equest-users] Negative Cooling Energy

[Eric O'Neill]

Ah, that looks like it was the (most substantial) issue. Interesting that my unmet load hours we're worse off with that setting :) Thanks Bill!

Eric

From: Bishop, Bill [mailto:bbishop at pathfinder-ea.com]
Sent: Monday, August 27, 2012 1:50 PM
To: Eric O'Neill; equest-users at lists.onebuilding.org
Subject: RE: Negative Cooling Energy

Eric,

I found at least one problem - you are using a HW reset temperature control on your CHW loop. (Check the week and day schedules on "ChW Reset".) I changed it to an ASHRAE CHW reset schedule and got this:

[cid:image001.jpg at 01CD845B.A9710860]

Regards,
Bill

[Senior Energy Engineer 28Jun2012]<mailto:wbishop at pathfinder-ea.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] On Behalf Of Eric O'Neill
Sent: Monday, August 27, 2012 2:12 PM
To: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: [Equest-users] Negative Cooling Energy

I looked around and found a few threads with people experiencing a similar issue as I'm experiencing right now, however, it sounds like their issues may have involved using custom efficiency curves (which I am not). The issue is - I'm getting negative cooling energy, particularly during the shoulder economizer months. I either need help identifying this novel energy source so I can patent it and become filthy rich, or figure out how I broke DOE2...
[cid:image003.jpg at 01CD845B.A9710860]

If it helps, the effect is exaggerated when I change the economizer lockout from 65F to something lower like 45F (this is where I took the above screenshot).

Has anyone seen this before or found a resolution? I'm guessing (well, hoping) that it's something trivial that I am overlooking, but a weekend away from the model hasn't helped...

I'm attaching the project files. Any thoughts would be appreciated!

Eric O'Neill
608.785.3328 | MICHAELS ENERGY

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120827/3f27d77f/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 24032 bytes
Desc: image001.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120827/3f27d77f/attachment-0006.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.jpg
Type: image/jpeg
Size: 20869 bytes
Desc: image002.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120827/3f27d77f/attachment-0007.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image003.jpg
Type: image/jpeg
Size: 29342 bytes
Desc: image003.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120827/3f27d77f/attachment-0008.jpg>