[bldg-sim] LEED Kitchen Exhaust Fan Modeling

Jeff Haberl jeffhaberl at tees.tamus.edu
Thu Nov 10 20:28:52 PST 2005


Actually, the modeling can't really be done in DOE-2.1e, since this would involve a system for the exhaust fan and make-up air fan., with the savings from the exhausting of make-up air vs conditioned air. However, you could get some idea of the AC and heating savings by running it with and without the exhaust, and then calc the extra fan by 2x the fan difference....something like that. 

Jeff
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Jeff S. Haberl, Ph.D., P.E.............................jhaberl at esl.tamu.edu

Professor......................................................Office Ph: 979-845-6507

Department of Architecture.......................Lab Ph: 979-845-6065 

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Texas A&M University..............................77843-3581

College Station, Texas, USA.......................URL: www-esl.tamu.edu

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-----Original Message-----
From: bldg-sim at gard.com <bldg-sim at gard.com>
To: bldg-sim at gard.com <bldg-sim at gard.com>
Sent: Tue Nov 08 08:56:19 2005
Subject: [bldg-sim] LEED Kitchen Exhaust Fan Modeling

Hi all,

 

I’m trying to simulate a teaching kitchen in eQUEST.  LEED Credit Interpretations Rulings have said that we can take credit for exhaust energy savings.  We have modeled our hoods as variable volume exhausts and put them on a typical use schedule.  ASHRAE 90.1 Section 6.3.7.1 only gives specifics for kitchen hoods over 5000 cfm (which we don’t have).  Am I to assume that we can model the hoods as constant volume in our baseline model?  The energy savings between the two seem somewhat unrealistic.  Has anyone come across this situation and do you have advice?

 

Thanks, 

 

Allison Rutter

Mechanical Engineer

Staengl Engineering

300 W. Main St. Suite 302

Charlottesville, VA 22903

Ph:   (434) 295-8105

Fax: (434) 296-5557

www.staenglengineering.com

 



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