[Bldg-sim] COMcheck & bldg sim programs

[Maria Karpman]

COMcheck LPDs are based on inputs made by design team when documenting code
compliance. Quality of these inputs depend on how seriously energy code is
taken by design team and code officials, and vary from project to project.
In my experience, they are often way off, and seem to be taken out of thin
air. Aside from that, based on Table G3.1, Proposed Building Performance
column ".a. Where a complete lighting system exists, the actual lighting
power for each thermal block shall be used in the model." LPDs by thermal
block are not entered/reported in COMCheck, so I don't really see how
COMCheck LPDs may be used in the model even if they were correct.

 

Maria

 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Nick Caton
Sent: Monday, February 18, 2013 10:46 AM
To: Christian Stalberg; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] COMcheck & bldg sim programs

 

Absolutely!  I regularly use COMcheck to document my proposed LPD tallies
and the corresponding baseline LPD inputs.

 

The only caveat to be aware of is that COMcheck presently cannot document
90.1-2007 inclusive of addendum i, which is of concern if you specifically
are determining/documenting exterior lighting wattages for SSc8 for LEED
2009 projects registered after November 2011.  I've contacted the
developers, and from the response I understand they do not intend to address
this issue.

 

Further reading/information in the attached discussion.

 

~Nick

cid:489575314 at 22072009-0ABB

 

NICK CATON, P.E.

SENIOR ENGINEER

 

Smith & Boucher Engineers

25501 west valley parkway, suite 200

olathe, ks 66061

direct 913.344.0036

fax 913.345.0617

www.smithboucher.com 

 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Christian
Stalberg
Sent: Monday, February 18, 2013 8:25 AM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] COMcheck & bldg sim programs

 

Can anyone tell me if the LPD as reported by COMcheck is a sound input for
whole building energy performance simulation programs? If not, why not?

Thank you in advance!

 

---

Christian Stalberg
Principal
Natural Intelligence, LLC  
 <blocked::blocked::http://naturalintelligence.us/>
http://naturalintelligence.us 
Tel. 919.986.9237

 

  _____  

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2012.0.2238 / Virus Database: 2639/5613 - Release Date: 02/18/13

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20130218/371932d0/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 1459 bytes
Desc: not available
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20130218/371932d0/attachment-0002.jpeg>