[Equest-users] Would cheaper fuel be credited?

[YinRic]

Yes, this is a special case, a group of small houses in a resort to be LEED certified. The owner wants to make the project the most green resort in the world...so fossil fuel is in general avoided. I agree that wood pellet appears to be similar with fossil fuel, like coal, although it is not fossil and can be renewed within less than 10 years. I am still expecting an answer about baseline fuel vs. proposed fuel, shall this be:

 

1. wood pellet vs. wood pellet

2. electricity vs. wood pellet

3. natural gas vs. wood pellet

4. other possibilities?

 

It seems to me that 1 or 3 shall be more convenient to use than 2, which is, as Paul said, "risky". But if 3 is used, why natural gas, not coal or oil?  

 

Any further comments are welcome.

 

Rick
 


From: Paul.Riemer at dunhameng.com
To: rrosen at taitem.com; cesseric at hotmail.com
Date: Tue, 8 Sep 2009 12:30:57 -0500
Subject: RE: [Equest-users] Would cheaper fuel be credited?







I probably would not count on a favorable LEED EAc1 review on this.   A literal reading my lead you to say Bamboo falls under "Electric and Other" in table G.3.1.1A and thus your baseline is electric heat but that seems like a risky claim.   I would be more inclined to read "Fossil Fuel" as "Purchased Combustible Fuel" because I do not think the standard anticipated wood fired heating in its scope of buildings.
 
Paul
 
  
 


From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Rob Rosen
Sent: Tuesday, September 08, 2009 11:57 AM
To: 'YinRic'; 'Equest User'
Subject: Re: [Equest-users] Would cheaper fuel be credited?
 
ASHRAE Appendix G Modeling Guidelines Tables 3.1.1A and 3.1.1B give the baseline HVAC system for each type of building. The baseline heating fuel in all cases is either fossil fuel or electricity. I believe that a different fuel may be used in the proposed building, if it is a purchased, renewable fuel (such as wood pellets). 
 
Appendix G Section 2.4 Exception says that if the renewable fuel is site-generated or free (such as burning waste wood from packing crates), then it cannot be modeled as a proposed fuel for the purpose of calculating building performance.
 
Rob Rosen
Senior Energy Analyst
Taitem Engineering
110 S. Albany St.
Ithaca, NY 14850
Phone: 607-277-1118 ext 110
Fax: 607-277-2119
 



From: YinRic [mailto:cesseric at hotmail.com] 
Sent: Monday, September 07, 2009 2:18 AM
To: Equest User
Subject: [Equest-users] Would cheaper fuel be credited?
Hi Users,
 
In a project, the client wants to use a cheap local fuel (bamboo pellet, rapidly renewable) to reduce annual energy cost and score high on EAc1. I am wondering if in baseline, the fuel must also be bamboo pellet or could be something else, say, natural gas, the price of which is higher per thermal unit? I do not seem to find where in ASHRAE 90.1-2004 dictates that in baseline and proposed, the fuel must be the same. Any comments are appreciated. 
 
Thanks,
Rick, PE, LEED AP  



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