[Equest-users] Modeling a non-existing cooling system

[Eric Hethcoat]

Correct me if I'm wrong but systems 10 and 11 wouldn't be applicable in
his case as his vehicle bay is not of the type that is supposed to be
used in system 10/11.  "Thermal zones designed with heating only systems
in the proposed design, serving storage rooms, stairwells, vestibules,
electrical/mechanical rooms, and restrooms not exhausting or
transferring air from mechanically cooled thermal zones in the proposed
design shall use System type 10 or 11 in the baseline building design."
 
I've got a similar project that instead of vehicle bays I have heavy
truck maintenance bays/repair bays + office space for the Corp of
Engineers.  They have determined that system types 10/11 can't be used
as they don't qualify due to room classifications.
 
Jeff - I think you might be stuck just like me trying to model cooling
in both baseline and proposed models.
 
Regards,
 
Eric
Eric Hethcoat, P.E.
Partner
Latimer, Sommers & Associates, P.A.
3639 SW Summerfield Dr., Suite A
Topeka, KS  66614
c.  913.481.3256
w.  785.233.3232
f.  785.233.0647
ehethcoat at lsapa.com
 
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From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Daniel
Knapp
Sent: Friday, March 09, 2012 3:24 PM
To: Jeff Ross-Bain
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Modeling a non-existing cooling system


Hi Jeff, 

Look at ASHRAE 90.1-2010 systems 9 and 10 which are heating only.  They
also show up in addenda dn, do, dp, dq, dr to 90.1-2007.  

Best wishes,
Dan


-
Daniel Knapp, PhD, LEED(r) AP O+M
danielk at arborus.ca

Arborus Consulting
Energy Strategies for the Built Environment
www.arborus.ca
76 Chamberlain Avenue 
Ottawa, ON, K1S 1V9 
Phone: (613) 234-7178 ext. 113
Fax: (613) 234-0740



On 2012-03-09, at 2:59 PM, Jeff Ross-Bain wrote:


	
	Hi All,
	
	From my understanding of ASHRAE 90.1 Appendix G Table G3.1 (10)
and the User's Manual, if a space has no cooling system, and it is a
conditioned space (i.e. NOT semiheated), then that space must have a
cooling system modeled and it would be identical for the proposed and
baseline cases. I completely understand the logic of this requirement -
in most cases.
	
	However, I am working on a fire station where the apparatus bay
(the fire trucks) are in a 4,000+ sq ft space that is heated only, but
is a conditioned space and not a semiheated space. This space is almost
half of the building area, will not be cooled, has large overhead doors
that are mostly open, and is a place where diesel engines run.
	
	Does anyone out there know of any exception, or interpretation,
to this modeling rule for specific cases such as a fire station where a
space can be modeled as heated only for the baseline and proposed cases?
The model will be submitted for LEED review. I can certainly model a
cooling system but it does not seem to make sense in this case.
	
	Thanks for your input and I really appreciate this forum.
	
	Cheers!
	
	Jeff Ross-Bain, PE, LEED AP BD+C
	Principal
	404-220-8940 Office
	404-220-8955 Direct

	www.rbgb.com <http://www.rbgb.com/> 
	
	Build Green. Save Time

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