[Bldg-sim] Appendix G - Fan power
Hopf, Johannes
johannes.hopf at dreso.com
Wed Mar 9 10:40:12 PST 2011
Thanks Vikram for your help.
I´m gonna search the archive and post were the answer can be found.
Johannes
Von: Sami, Vikram [mailto:Vikram.Sami at perkinswill.com]
Gesendet: Dienstag, 8. März 2011 19:41
An: Hopf, Johannes
Betreff: RE: [Bldg-sim] Appendix G - Fan power
In that case – for the baseline the Fan power limitation – is for the ENTIRE
building – supply and return. You calculate your total allowable and then
break it down based on the ratio in your designed building. Sop for example
if your designed building has a supply to return fan energy ratio of 3:1, you
would first calculate your total allowable fan energy, and then separate it
by supply and return in the ratio of 4:1.
There’s been some extensive discussion on this topic in the past on this list
– you could probably find it in the archives somewhere.
We've moved! Please note our new address.
Vikram Sami, LEED AP BD+C
Sustainable Design Analyst
1315 Peachtree St. NE, Atlanta, GA 30309
t: 404-443-7462 f: 404.892.5823 e: vikram.sami at perkinswill.com
www.perkinswill.com <http://www.perkinswill.com/>
Perkins+Will. Ideas + buildings that honor the broader goals of society
Von: Andrew Craig [mailto:AndrewC at InterfaceEng.Com]
Gesendet: Dienstag, 8. März 2011 19:49
An: Hopf, Johannes; bldg-sim at lists.onebuilding.org
Betreff: RE: [Bldg-sim] Appendix G - Fan power
This is a good question and isn’t specifically addressed in Appendix G 2007.
It does specify to match the proposed design’s fan arrangement so this can be
used as a starting point. On a recent job we did with return fans, the
overall fan power was split 70/30 between supply and return. Another job
that used power exhaust fans split out to 80/20. As Michael mentioned,
Appendix G 2010 says that they should be proportioned out the same as the
proposed design although that information often needs to be extracted from
the design team.
Andrew Craig PE, LEED AP
Project Mechanical Engineer
INTERFACE ENGINEERING
email andrewc at interfaceeng.com <mailto:andrewc at interfaceeng.com>
direct 503.382.2696
www.interfaceeng.com <http://www.interfaceeng.com/>
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Hopf, Johannes
Sent: Tuesday, March 08, 2011 10:36 AM
To: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Appendix G - Fan power
From time to time we´re asked in LEED-Clarifications to break up the total
fan-power into relief, exhaust, supply etc. Can somebody tell us what to do?
The calculation in the proposed is totally different and for the baseline we
only use the 90.1 equations.
Johannes
Von: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] Im Auftrag von Sami, Vikram
Gesendet: Dienstag, 8. März 2011 17:11
An: bldg-sim at lists.onebuilding.org
Betreff: [Bldg-sim] Appendix G - Fan power
Does the dot in the equation indicate multiplication? So should the equation
read CFMS X 0.0013 + A?
The reason I am confused is that they use X in other places.
Thanks in advance
We've moved! Please note our new address.
Vikram Sami, LEED AP BD+C
Sustainable Design Analyst
1315 Peachtree St. NE, Atlanta, GA 30309
t: 404-443-7462 f: 404.892.5823 e: vikram.sami at perkinswill.com
www.perkinswill.com <http://www.perkinswill.com/>
Perkins+Will. Ideas + buildings that honor the broader goals of society
Perkins+Will is carbon neutral. Learn more about our 2030 Challenge
Estimating + Evaluation <http://2030e2.perkinswill.com/> tool for fossil
fuel free buildings
This email and any files transmitted with it are confidential and intended
solely for the addressee. If you are not the named addressee you should not
disseminate, distribute, copy, or alter this email.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20110309/0ddf11f9/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/png
Size: 41690 bytes
Desc: image001.png
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20110309/0ddf11f9/attachment-0002.png>
More information about the Bldg-sim
mailing list