[Bldg-sim] Apendix G3.1.2.9

Gregg Liddick gliddick at theepstengroup.com
Tue Mar 23 14:24:39 PDT 2010


No, you use only the fan supply cfm to calculate the total fan power, then cut that fan power up into supply, return, etc.


Best Regards,

Gregg Liddick, EIT, LEED(r) AP

The Epsten Group, Inc.
429 Edgewood Avenue
Atlanta GA 30312
Phone: 404-577-0370  ext. 102
Fax: 404-577-1739
www.theepstengroup.com<http://www.theepstengroup.com>

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From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Fareed Syed
Sent: Tuesday, March 23, 2010 5:11 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Apendix G3.1.2.9

Hello All,

I am trying to understand the stated appendix for the baseline model.

When I am calculating the Pfan for a system, do I need add up supply, return, system and room exhaust cfm's?

I got this comment from GBCI: "Revise the sum of the supply, return, exhaust, and relief fans for each HVAC system to be equal to the volume calculated in G3.1.2.8 and power calculated in G3.1.2.9 (where CFM refers to supply air volume)."


Please let me know your input on how to calculate Pfan.


Thanks,

Fareed Syed EIT, LEED(r) AP
Mechanical Engineer
[cid:image001.png at 01CACAAD.B7ABC100]
1811 4 Mile Rd NE
Grand Rapids, MI  49525

Phone: 616.361.2664 ext. 3247
Direct: 616.447.3447
Fax: 616.361.1493
syedf at progressiveae.com<mailto:syedf at progressiveae.com>
www.progressiveae.com<http://www.progressiveae.com/>




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