[Bldg-sim] DOAU in Baseline vs. Proposed Model
Robert Gengelbach
rgengelbach at sustainablemech.com
Thu Apr 22 09:15:32 PDT 2010
I agree to leave out the DOAS in the baseline case. The baseline case needs
to be in accordance with either Section 11 or Appendix G of 90.1, neither
sections requires a DOAS for the baseline building.
cid:image003.png at 01C9AB43.F0BEE290
Robert Gengelbach, PE, LEEDR AP
Sustainable Mechanical Design Associates, LLC
89 Monroe Center NW
Suite 302
Grand Rapids, MI 49503
P: (616) 776-9009
F: (616) 776-9010
C: (616) 570-2329
rgengelbach at sustainablemech.com
P Please print only if necessary
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Carol Gardner
Sent: Thursday, April 22, 2010 11:54 AM
To: Seth P. Spangler
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] DOAU in Baseline vs. Proposed Model
In my opinion, it should not be modeled in the baseline building and outdoor
air should be added to the systems.
Carol
On Thu, Apr 22, 2010 at 8:11 AM, Seth P. Spangler <sspangle at rmf.com> wrote:
Hello All,
For the majority of the LEED projects I work on I decouple the space load
from the ventilation load by using a dedicated outdoor air unit (DAOU).
Before GBCI took over the review process the proposed and baseline models
contained the same number of systems meaning if we used a DOAU in the
proposed model - we modeled the same unit in the baseline. I recently
received a comment to remove the DOAU from the baseline and add the
ventilation air to the space load systems. For that particular model it
didn't have a very big impact so I didn't think twice about it.
The question - should a DOAU be modeled in the baseline case or should the
outdoor air load be added to the mechanical systems that take care of the
space load?
Thanks
Seth Spangler, LEEDR AP
Project Engineer
RMF Engineering, Inc
Ph: (843) 971-9639 ext:1497
Fax: (843) 971-9641
sspangle at rmf.com
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