[Trace-users] Appendix G Fan Energy
msnarski at shwgroup.com
Tue Oct 27 11:33:28 PDT 2009
I'm running an energy model (for LEED), and am having a particular
problem with the Fan Energy results. I am using the actual fan
horsepower (for the supply and for the return fans) for the proposed
building, and the Appendix G equation in G184.108.40.206. The results I'm
getting for the proposed design are considerably higher (about 31%) than
the baseline building. This leads me to believe that I may be
misinterpreting the equation.
As stated in the 90.1 Users manual, the equation accounts for supply,
return, relief, and exhaust fans. However, I've been simply inputting
the Supply CFM into the equation. Given that it accounts for all fans,
should I use the accumulated CFMs for each of those fans (i.e. if I'm
supplying 32,000, and returning 24,000, should I use 56,000 cfm)?
While I understand TRACE has the automatic baseline fan sizing
capability, I'm not sure I trust it completely, and would like to know
where the calculation comes from.
Thanks for any help you can offer!
This e-mail transmission is intended only for the use of the individual or entity named above and may contain information that is confidential, privileged, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any review, disclosure, copying, distribution, or other use of any of the information contained in this transmission is strictly prohibited. If you have received this transmission in error, please immediately notify the sender by e-mail at the above address and delete it from your computer system; you should not copy the message or disclose its contents to anyone. The content of the message and or attachments may not reflect the view and opinions of the originating company or any party it is representing.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Trace-users