[Equest-users] VRF in eQuest and LEED

[Paul Diglio]

Custom curves will show more energy savings.  Let me know the make and model.  I 
might have the data you need.

If I remember correctly the custom curves show somewhere around a 3% VRF savings 
over the PVVT curves depending on the outside ambient conditions of the project.

 Paul Diglio, CEM, CBCP


87 Fairmont Avenue
New Haven, CT  06513
203-415-0082


www.pdigliollc.com




________________________________
From: Gastón Michaud F. <gaston.michaud at cts-cr.com>
To: Paul Diglio <paul.diglio at sbcglobal.net>; 
"equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Sent: Mon, November 26, 2012 6:39:37 PM
Subject: RE: [Equest-users] VRF in eQuest and LEED

 
Thank you Paul for your response.
 
I did not model custom curves, I understand that if a use the PVVT system and 
set the compressor to variable speed, there is no need to modify them; am I 
correct?  If that is the case, I’ll try to  model the custom performance curves; 
I was just trying to avoid that since I haven’t been able to get the 
manufacturer information…
 
Do you think the LEED reviewers would accept this approximation without the 
custom curves?  I’ve read before that not using the curves gives a conservative 
result, which I am willing to accept.     
Thanks!
 
  Ing. Gastón Michaud F. 
  Tel.: (506) 2222-7529
  Fax: (506) 2256-5608
  From USA: 1-305-433-3668
  Calle 30, Avenida 0 y 2. San José, Costa Rica  
          
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From:Paul Diglio [mailto:paul.diglio at sbcglobal.net] 
Sent: Monday, November 26, 2012 5:10 PM
To: Gastón Michaud F.; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] VRF in eQuest and LEED
 
Hello:

I have submitted projects to LEED using the same methodology without any 
problems.  Did you model custom performance curves?

Perhaps you explanation was not clear?
 
Paul Diglio, CEM, CBCP
87 Fairmont Avenue
New Haven, CT 06513
203-415-0082
 
www.pdigliollc.com
 
 

________________________________
 
From:Gastón Michaud F. <gaston.michaud at cts-cr.com>
To: "equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Sent: Mon, November 26, 2012 5:31:19 PM
Subject: [Equest-users] VRF in eQuest and LEED
Hello everyone, 
 
We are applying for a LEED certification in a project which includes a VRF 
system in several areas.  In order to model such system, we followed the 
methodology described in the document “Energy Trust of Oregon”; and submitted  
an explanation to the LEED reviewers describing each step taken in eQuest.  We 
got the following review comment:
“The simulation software used is not capable of modeling VRF systems. The 
project team has not provided information describing how the VRF systems 
performance  has been modeled to reflect the actual design. Please provide a 
narrative and any supporting documentation demonstrating that the VRF system 
characteristics have accurately modeled.”
 
Has anyone had any similar issue regarding a LEED project?  After reading their 
comment, it seems that they might have overlooked our explanation, or maybe it 
was just not enough.  Any ideas? Does LEED accepts this approximation?   Thank 
you very much!  

 
 
  Ing. Gastón Michaud F. 
  Tel.: (506) 2222-7529
  Fax: (506) 2256-5608
  From USA: 1-305-433-3668
  Calle 30, Avenida 0 y 2. San José, Costa Rica  
          
Este correo puede contener información protegida por el secreto profesional. Si 
usted no es la persona a quien va dirigido, por favor tome en cuenta que su 
divulgación, distribución o reproducción  es estrictamente prohibida. Cualquier 
persona que reciba este mensaje por error debe notificarlo inmediatamente al 
remitente vía telefónica o correo electrónico y borrarlo permanentemente de su 
computador. Los comentarios plasmados en este correo son del remitente  
solamente y no reflejan necesariamente la posición de CTS S.A.
Por favor considere su responsabilidad con el medio ambiente antes de imprimir 
este correo electrónico 
----------------------------------------------------------------------------------------------------------------

This mail may contain information that is legally privileged, confidential or 
exempt from disclosure.  If you are not the intended recipient, please note that 
any dissemination, distribution  or copying of this message is strictly 
prohibited.  Anyone who receives this message in error should notify the sender 
immediately by telephone or by e-mail and delete it permanently from their 
computer.  The opinions above are those of the author and do not  necessarily 
reflect the position of CTS S.A.
Please consider your environmental responsibility before printing this e-mail  
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