[Bldg-sim] Baseline VAV OA vs Proposed DOAS OA

[Dónal O'Connor]

Hi all,

Thank you for your input.

Cheers

Dónal

Date: Sat, 11 May 2013 12:34:55 +0300
Subject: [Bldg-sim] Baseline VAV OA vs Proposed DOAS OA
From: wahid.hamed at gmail.com
To: oconnor_dj at hotmail.com
CC: bldg-sim at lists.onebuilding.org

Hi Donal, As OA in the proposed model must equal the OA in the baseline model so you have to use 13,160 CFM (better energy saving chance on the proposed than 10,216 CFM).
 There are more details on Example 6-III "Calculation of Fan Power Energy, Floor-by-Floor System" at ASHRAE 90.1-2007 User's Manual 
  
Best Regards,

Wahid H. Mohamed, LEED AP BD+C 
 (+966)-5467 622 67
Mechanical Project Engineer, Energy Modeler
  
 


On Fri, May 10, 2013 at 5:32 PM, Dónal O'Connor <oconnor_dj at hotmail.com> wrote:




Hi all,

I'm looking for guidance on which number to use for my baseline OA when compared to the proposed system.

The proposed HVAC system is DOAS - FCUs. OA requirements according to ASHRAE 62.1 are 10,216 cfm. However, to satisfy exhaust requirements, the total system ventilation, i.e. OA as it's a DOAS, is 13,160 cfm.


Does the baseline OA need to equal 10,216 or 13,160 cfm?

Thanks

Dónal
 		 	   		  

_______________________________________________

Bldg-sim mailing list

http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org

To unsubscribe from this mailing list send  a blank message to BLDG-SIM-UNSUBSCRIBE at ONEBUILDING.ORG



 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20130513/91738c92/attachment-0001.htm>