<html><div style='background-color:'><P>Great discussion on the LEED aspects of Process Loads.</P>
<P>However I wanted to point out that for a LEED energy analysis, process energy has to be maintained at 25% of total energy cost of the Baseline Building Performance ( LEED- 2.2 Ref Guide page 182). I prefer taking exceptional calculatins for process energy to simplify the calculations as well as the review.</P>
<P>Hope this helps.<BR></P>
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<P>Vaibhav Potnis <BR><A href="http://www.greenbuildingservices.com">www.greenbuildingservices.com</A></P>
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<P>From: <I>"Brandon Nichols" <BrandonN@Hargis.biz></I><BR>Reply-To: <I>BrandonN@Hargis.biz</I><BR>To: <I><BLDG-SIM@gard.com></I><BR>Subject: <I>[BLDG-SIM] Process Loads and LEED</I><BR>Date: <I>Mon, 5 Mar 2007 11:05:04 -0800</I><BR><BR></P>
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<DIV dir=ltr align=left><SPAN class=081323618-05032007><FONT face="Lucida Console" color=#0000ff size=2>Varkie,</FONT></SPAN></DIV>
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<DIV><SPAN class=971281318-05032007><FONT face="Lucida Console"><FONT color=#0000ff><FONT size=2>Something we have been noticing in schools lately is <SPAN class=081323618-05032007>a </SPAN>high receptacle load, which we believe is attributable to increased usage of computers<SPAN class=081323618-05032007>, approaching and in some areas exceeding 5 W per square foot -- the kinds of loads I used to figure for "technology intensive" office areas just a few years ago.</SPAN></FONT></FONT></FONT></SPAN></DIV>
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<DIV><FONT face="Lucida Console" color=#0000ff size=2><SPAN class=971281318-05032007>In researching an energy question for a school today, I came across <SPAN class=081323618-05032007>this web page and </SPAN>case study which I thought was relevant to your question<SPAN class=081323618-05032007>:</SPAN></SPAN></FONT></DIV>
<DIV><FONT face="Lucida Console" color=#0000ff size=2><SPAN class=971281318-05032007><SPAN class=081323618-05032007></SPAN></SPAN></FONT> </DIV>
<DIV><FONT face="Lucida Console" color=#0000ff size=2><SPAN class=971281318-05032007><SPAN class=081323618-05032007><A href="http://www.energystar.gov/index.cfm?c=power_mgt.pr_power_management">http://www.energystar.gov/index.cfm?c=power_mgt.pr_power_management</A></SPAN></SPAN></FONT></DIV>
<DIV><FONT face="Lucida Console" color=#0000ff size=2><SPAN class=971281318-05032007><SPAN class=081323618-05032007></SPAN></SPAN></FONT> </DIV>
<DIV><FONT size=+0><SPAN class=971281318-05032007><A href="http://www.energystar.gov/ia/products/power_mgt/North_Thurston_Case_Study.pdf"><FONT face="Lucida Console"><FONT size=2>http://www.energystar.gov/ia/products/power_mgt/North_Thurston_Case_Study.pdf</FONT></FONT></A></SPAN></FONT></DIV>
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<DIV><FONT face="Lucida Console" color=#0000ff size=2><SPAN class=971281318-05032007>Essentially they summarize how<SPAN class=081323618-05032007>, by consistently implementing </SPAN>power management on computer monitors and CPUs using a simple utility program, <SPAN class=081323618-05032007>a</SPAN> cost savings of an estimated $15-$30 per computer per year<SPAN class=081323618-05032007> can be realized (on personal workstations I would add, not systems required to be continuously online)</SPAN>. Multiplied across thousands of computers, the bottom line annual savings can be substantial.</SPAN></FONT></DIV>
<DIV><FONT face="Lucida Console" color=#0000ff size=2><SPAN class=971281318-05032007></SPAN></FONT> </DIV>
<DIV><FONT face="Lucida Console"><FONT color=#0000ff><FONT size=2><SPAN class=971281318-05032007><SPAN class=081323618-05032007>How to account for this in energy modeling software I have a general idea:</SPAN></SPAN></FONT></FONT></FONT></DIV>
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<DIV><FONT face="Lucida Console"><FONT color=#0000ff><FONT size=2><SPAN class=971281318-05032007><SPAN class=081323618-05032007>1) Assign the baseline receptacle load to "occupied hours"; e.g. 5 W/SF 'always on'</SPAN></SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face="Lucida Console"><FONT color=#0000ff><FONT size=2><SPAN class=971281318-05032007><SPAN class=081323618-05032007>2) Assign a diversified receptacle load schedule to the alternate analyses</SPAN></SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face="Lucida Console"><FONT color=#0000ff><FONT size=2><SPAN class=971281318-05032007><SPAN class=081323618-05032007></SPAN></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face="Lucida Console"><FONT color=#0000ff><FONT size=2><SPAN class=971281318-05032007><SPAN class=081323618-05032007>But quantifying the diversified load schedule is the hard part -- it will no doubt vary significantly depending on the occupancy. Though not fully developed, this may provide a starting point for one method to reduce process electrical loads in a LEED analysis.</SPAN></SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face="Lucida Console"><FONT color=#0000ff><FONT size=2><SPAN class=971281318-05032007><SPAN class=081323618-05032007></SPAN></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face="Lucida Console" color=#0000ff size=2><SPAN class=971281318-05032007><SPAN class=081323618-05032007><SPAN class=518430319-05032007></SPAN></SPAN></SPAN></FONT> </DIV>
<DIV><FONT face="Lucida Console" color=#0000ff size=2><SPAN class=971281318-05032007><SPAN class=081323618-05032007><SPAN class=518430319-05032007>Regards</SPAN></SPAN></SPAN></FONT></DIV></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=081323618-05032007><FONT face="Lucida Console" color=#0000ff size=2></FONT></SPAN> </DIV><FONT face="Lucida Console" color=#0000ff size=2>Brandon Nichols, PE<BR>Mechanical<BR>HARGIS ENGINEERS<BR>600 Stewart St<BR>Suite 1000<BR>Seattle, WA 98101<BR>d | 206.436.0400 c | 206.228.8707<BR>o | 206.448.3376 f | 206.448.4450<BR><A href="http://www.hargis.biz/">www.hargis.biz</A><BR></FONT><BR>
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<FONT face=Tahoma size=2><B>From:</B> BLDG-SIM@gard.com [mailto:BLDG-SIM@gard.com] <B>On Behalf Of </B>Varkie Thomas<BR><B>Sent:</B> Monday, March 05, 2007 7:14 AM<BR><B>To:</B> BLDG-SIM@gard.com<BR><B>Subject:</B> [BLDG-SIM] Process Loads and LEED<BR></FONT><BR></DIV>
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<P>LEED-NC Version 2.2 page 173 "Optimize Energy Performance" states "Demonstrate a <STRONG><FONT color=red>percentage</FONT></STRONG> improvement in the proposed building performance -- " and "For the purpose of this analysis, process energy is considered to include, but is not limited to, office and general miscellaneous equipment, computers, elevators & escalators, kitchen cooking & refrigeration, laundry washing & drying --- "</P>
<P>On page 174 "For EA Credit 1, process loads shall be identical for both the baseline building performance and the proposed building performance"</P>
<P>Assuming the same space process load is used in the baseline and proposed, then a building with a receptacle load density of say 1.0 w/sf will produce a much greater percent savings compared to the same building with a receptacle load density of say 6 w/sf.</P>
<P>Page 173 "must comply with the mandatory provisions (Sections --- ) in Standard 90.1-2004 (without amendments)" There is no mention of Standards 62 for ventilation & occupancy density or Standard 55 for indoor comfort conditions. Does this mean that the baseline can be based on the proposed ventilation, occupancy density and indoor comfort conditions? According to Standard 62-2004 the occupancy density for general office space is 200 sf/P (from 142 sf/P in 62-2001 and I think 100 sf/P earlier). This produces a low percent system outdoor air and energy conservation measures such as "occupancy based ventilation" and "outdoor air to relief air heat recovery" have little effect. Std 62-2004 (also Std 90.1-2004 for lighting) provides design criteria for a limited number of space types such as a prison cell (improved from 50 sf/P & 20 cfm/P in
62-2001 to 40 sf/P & 10 cfm/P in 62-2004) . This makes it difficult to determine baselin e conditions using Std 62.</P>
<P>I am looking at a financial institution building with high occupancy and receptacle load densities.</P><PRE>==================
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