[Bldg-sim] DOAU in Baseline vs. Proposed Model

[Robert Gengelbach]

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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