[Bldg-sim] Fossil/Electric hybrid system under 90.1 App G

[James Hansen]

Paul, you are correct, the NC CIR appears to apply.  I couldn't find one
under CS.  And yes, it looks like as long as the gas heating section is
for preheat (or after-hours heating, or morning warm-up, etc) then you
can have a gas-fired RTU with electric reheat VAV boxes.

 

Thanks to all,

 

GHT Limited
James Hansen, PE, LEED AP

Senior Associate

1010 N. Glebe Rd, Suite 200

Arlington, VA  22201-4749

703-338-5754 (Cell)

703-243-1200 (Office)

703-276-1376 (Fax)

www.ghtltd.com <http://www.ghtltd.com/> 

 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Paul Riemer
Sent: Monday, November 03, 2008 12:21 PM
To: 'Rosenberg, Michael I'; James Hansen; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Fossil/Electric hybrid system under 90.1 App G

 

I believe the/a CIR that Mr. Rosenberg is referring to is an NC v 2.2
CIR submitted 9/27/06 and answered on 10/23/06 that hinges on the gas
being preheat.

 

I have not read the CIR Mr. Dec mentioned although that seems
fascinating too.

 

Paul Riemer

 

 

 

 


 

	
________________________________


	From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Rosenberg,
Michael I
	Sent: Monday, November 03, 2008 10:43 AM
	To: James Hansen; bldg-sim at lists.onebuilding.org
	Subject: Re: [Bldg-sim] Fossil/Electric hybrid system under 90.1
App G

	Yes, you are correct. Appendix G requires that if you have any
gas heat in your Proposed building, the baseline system would use gas
heat. However, if this is for a LEED submittal, you may want to do a
little research on relevant CIR's since USGBC has interpreted this a
little differently than was intended by Appendix G. 

	 

	_________________________ 

	Michael Rosenberg 
	Senior Commercial Buildings Energy Analyst 
	ENERGY & ENVIRONMENT DIRECTORATE 

	Pacific Northwest National Laboratory 
	2032 Todd Street 
	Eugene, OR 97405 
	(541) 844-1960 
	michael.rosenberg at pnl.gov 
	www.pnl.gov 

	 

	 

	
________________________________


	From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of James
Hansen
	Sent: Monday, November 03, 2008 8:32 AM
	To: bldg-sim at lists.onebuilding.org
	Subject: [Bldg-sim] Fossil/Electric hybrid system under 90.1 App
G

	I can't seem to find reference to this in the 90.1 User Manual.


	 

	In Appendix G, Table G3.1.1A, there is a reference to a
Fossil/Electric hybrid for determining Baseline system type.  Is this a
system that, for example, might have a gas-fired RTU with electric VAV
boxes? 

	 

	In other words, if there is ANY gas heat in your Proposed
building, your Baseline building would have to automatically default to
a fuel furnace or gas-fired hot water heating system, correct?

	 

	Thanks,

	 

	GHT Limited
	James Hansen, PE, LEED AP

	Senior Associate

	1010 N. Glebe Rd, Suite 200

	Arlington, VA  22201-4749

	703-338-5754 (Cell)

	703-243-1200 (Office)

	703-276-1376 (Fax)

	www.ghtltd.com
<http://console.mxlogic.com/redir/?IKnspLtASC--ZtVVMS028AVDPgVv3tPtPp0Z0
ynF9kKgGT2TQ1hYGjFRougrAuxa17w09J5xxZASyCC-epK-qekPry9I5-Aq83iScDE4iZ9aC
BQQg2ZqkAvwQvZFNBoQg4ON2cA3h1gJivGCy1K27Nd41EVLO9Ew45Bzh04zs_3VU3zq9J4SC
--ZtVVUSJ3iidPW> 

	
________________________________


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The information contained in this communication is confidential, may be privileged, and is intended only for the use of the addressee.  It is the property of GHT Limited.  Unauthorized use, disclosure or copying of this communication or any part thereof is strictly prohibited and may be unlawful.  If you have received this communication in error, please notify me immediately by return e-mail or by e-mail to ght at ghtltd.com, and destroy this communication and all copies thereof, including all attachments.  Thank you.



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