[Bldg-sim] Peak Loads Question and one Random Question

[Paul Erickson]

Benjamin,

We've written a variety of scripts to help out with tasks such as changing the zone name to reflect manual change of the space name.  It doesn't prevent all the pain, but at least 50%.  It seems like a line or two of code could solve this within eQuest...perhaps it will in v3.64. as John mentioned.

Paul

Paul Erickson  LEED(r) AP
SR. Sustainable Design COnsultant



AEI | AFFILIATED ENGINEERS, INC.
5802 Research Park Blvd. | Madison, WI  53719

P: 608.236.1112 | F: 608.238.2614
perickson at aeieng.com<mailto:perickson at aeieng.com>  |  www.aeieng.com<http://www.aeieng.com/>



From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of John Aulbach
Sent: Tuesday, August 17, 2010 3:21 PM
To: Benjamin Jordan; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Peak Loads Question and one Random Question

I'm sure others have better answers.

But.....

The names you create in the Wizard disappear in the Detailed Edit. Better to write them down, then translate them into the proper spaces/zones. I understand this problem may go away in eQuest 3.64, when it becomes available.

The other question has to to with LOADS and SYSTEMS peak sizes. LOADS is strictly the "barn" without any outside air or coil attached to it. The SYSTEMS outputs have a fan, coil, and ventilation attached. Even with No OSA, you have fan heat, coil loosses, and duct losses that will change your results.


John R. Aulbach, PE, CEM
Senior Energy Engineer
________________________________
Partner Energy
1990 E. Grand Avenue, El Segundo, CA 90245
W: 888-826-1216, X254| D: 310-765-7295 | F: 310-817-2745
www.ptrenergy.com<http://www.ptrenergy.com/> | jaulbach at ptrenergy.com<mailto:%7C%20jaulbach at ptrenergy.com>

________________________________
From: Benjamin Jordan <benmichaeljordan at gmail.com>
To: bldg-sim at lists.onebuilding.org
Sent: Tue, August 17, 2010 12:46:51 PM
Subject: [Bldg-sim] Peak Loads Question and one Random Question


Hello everyone,

I have a question about some of the outputs from EQUEST that focus on space and peak loads. First of all, the random question. When I modeled my recent building, I created my 'spaces' so that each space would be it's own zone. This made it very simple for creating zone groups (applying templates) in the DD wizard, but I had a problem in that when I went into the detailed edit and named the spaces, these changes did not occur to the 'zone' names in the HVAC tab. Does anyone know a way to change these simultaneously or a better workflow suggestion (this one my first use of equest for the detailed edit)??

Now onto my 2nd question, I'm using Equest to calculate my HVAC loads (system and space). For 3 of the 5 systems, I used a generic OA/person but for two systems, I went ahead and put a set OA cfm(for a system) into one zone and put the other zones at zero. Anyways, here is my question. When looking at the outputs, I cannot figure why the difference between SV-A (System Design Parameters) and LS-A (Space Peak Loads Summary DESIGN DAY).For instance, in the system that I turned the OA air off in most of hte zones, I'm still getting differences in the results and do not understand this. Any help in explaining these differences would be greatly appreciated. Thanks!

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20100817/1d31031c/attachment.htm>