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<DIV>Dennis,</DIV>
<DIV> </DIV>
<DIV>Previously the PROCESS load was not considered as part of EAc1 (LEED-NC v2.1). However, as part of a project I am currently working on, all language in v2.2 related to process energy, and some feedback from others (waiting on credit interpretation), leads us to believe that PROCESS energy cost must be considered, and thus energy savings within process loads can be used to justify reduced building energy consumption/cost.<BR></DIV>
<DIV>Regards,</DIV>
<DIV> </DIV>
<DIV>Paul</DIV>
<DIV> </DIV>
<DIV><BR>>>> "Dennis Lee Gmail" <dennis.lee.pe@gmail.com> 6/8/2006 11:36 am >>><BR>Your lab exhaust is PROCESS load, LEED EAc1 will not compare energy<BR>saving from the process, but only compare the saving from HVAC system<BR>for humam comfort, i.e. only for office and classroom.<BR><BR>Depends how your ventilation system was designed, the heating/cooling<BR>loads should be seperated for human comfort and process. I did a<BR>similar case for a trade college building.<BR><BR>Few questions need to be answered anyway:<BR>1. is the lab exhaust operating constantly, or ON/OFF switch available<BR>on each station so that VAV exhaust is considerable (mine is VAV<BR>exhaust)<BR>2. Can you seperate ventilation system for human comfort and make-up<BR>air for lab exhaust<BR>3. Is there heat recovery system possible for AHUs<BR>4. Did you check ASHRAE 90.1-2004, which regulates heating/cooling<BR>load for make-up air for process exhaust, included kitchen hood<BR>exhaust, this will help you set up your reference building.<BR><BR>Hope it helps<BR><BR>Dennis Lee<BR><BR><BR>On 6/8/06, Peter Simmonds <peter.simmonds@ibece.net> wrote:<BR>><BR>><BR>><BR>><BR>> The first response would be to drop LEED.<BR>><BR>><BR>><BR>> The second would be to suggest that you VAV lab exhaust to reduce energy,<BR>> you get an extra point for ventilating in excess of 62.1 recommended minimum<BR>> requirements. Classrooms will also 100% OA. The lab supply air will be<BR>> higher than 90.1 or 62.1 recommends, use the real world cfm as a constant<BR>> volume system to determine the standard case then use the VAV fume hood<BR>> control to reduce the energy consumption compared to the adapted standard<BR>> case.<BR>><BR>><BR>><BR>><BR>> Peter Simmonds Ph.D.<BR>><BR>> Associate<BR>> IBE Consulting Engineers<BR>><BR>> 14130 Riverside Drive Suite 201<BR>><BR>> Sherman Oaks, CA 91423<BR>> p: (818) 377-8220<BR>>
gt;<BR>><BR>><BR>><BR>><BR>> Eric Yang, LEED AP<BR>><BR>> Mechanical Engineer<BR>><BR>> SmithGroup<BR>><BR>> 1850 K Street, NW, Suite 250<BR>><BR>> Washington, DC 20006<BR>><BR>> t 202.974.4555 (direct)<BR>><BR>> f. 202.974.4500<BR>><BR>> eric.yang@smithgroup.com<BR>><BR>> www.smithgroup.com<BR>><BR>><BR>><BR>> ==================<BR>> You received this e-mail because you are subscribed<BR>> to the BLDG-SIM@GARD.COM mailing list. To unsubscribe<BR>> from this mailing list send a blank message to<BR>> BLDG-SIM-UNSUBSCRIBE@GARD.COM<BR>><BR>> You received this e-mail because you are subscribed<BR>> to the BLDG-SIM@GARD.COM mailing list. To unsubscribe<BR>> from this mailing list send a blank message to<BR>> BLDG-SIM-UNSUBSCRIBE@GARD.COM<BR>><BR>><BR><BR>======================================================<BR>You received this e-mail because you are subscribed <BR>to the BLDG-SIM@GARD.COM mailing list. To unsubscribe <BR>from this mailing list send a blank message to <BR>BLDG-SIM-UNSUBSCRIBE@GARD.COM<BR><BR><BR></DIV><PRE>
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