[Bldg-sim] Garage Ventilation and LEED Credit EA-1

[Michael Tillou]

Certianly no argument here.  I think the proposed strategy on the project in
question is to keep the fans at a minimum ventiltion rate unless high levels
of CO are detected.  
 
Your comments are part of the reason why I wanted to find out if there is
any precedent for claiming credit for reduced garage exhaust fan energy use.
 
Mike

  _____  

From: C. J. Gann [mailto:cjg04austin at swbell.net] 
Sent: Tuesday, February 12, 2008 3:55 PM
To: 'Michael Tillou'; bldg-sim at lists.onebuilding.org
Subject: RE: [Bldg-sim] Garage Ventilation and LEED Credit EA-1


CO is not like CO2, it is deadly. Garage ventilation requirements (0.75
cfm/sf) are based on fresh air change to reduce contaminant levels to
acceptable values. Besides, CO is not the only thing in auto exhaust, there
is NOx, SOx, etc. so you would have to "sense" all these and what if a
sensor fails and the fans do not energize? Seems too dangerous and risky to
me. Efficiency cannot trump life safety. Best to use open walls on two sides
and natural ventilation can replace 100% of the power exhaust requirements,
assuming the structure is above ground that is.
 
Craig J. Gann. P.E.
www.EnergySimulators.com

-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Michael Tillou
Sent: Tuesday, February 12, 2008 2:32 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Garage Ventilation and LEED Credit EA-1


Does anyone know if USGBC is allowing credit for CO Control of parking
garage ventilation?  If anyone has any experience with successfully getting
credit for this efficiency measure can you please let me know.  I am curious
what is considered a reasonable baseline.
 
Thanks in advance.
 
Mike
 
 

Michael Tillou, PE, LEED
Tillou Engineering, LLC
Williamstown, MA 01267
P: 413-458-9870 C: 413-652-1087
 

  _____  

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Kevin Kyte
Sent: Tuesday, February 12, 2008 1:25 PM
To: 'Howe, Timothy'; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Metal Building R-19 cavity insulation U-factor



This may help.

 

http://www.maconline.org/designalert.PDF

 

 

 

Kevin Kyte, LEED AP

RobsonWoese, Inc.

(T) 716-636-1800

(F) 716-636-1856

 <http://robsonwoese.com/index.php> http://robsonwoese.com

 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Howe, Timothy
Sent: Tuesday, February 12, 2008 1:07 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Metal Building R-19 cavity insulation U-factor

 

I have a metal building wall construction with R-19 insulation between the
girts.

 

Now in ASHRAE 90.1-2004 Appendix A, Table A3.2 the single layer of mineral
fiber only goes up to R-13.

 

Any suggestion on how to determine the U-Factor for this wall?

 

Thanks.

 

Tim.

 

 

 

Timothy Howe
Mechanical Engineer
Stantec

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