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<DIV>LEED has approved the use of addenda to A90.1-2004 so Addendum 'ac' can be applied. The change to the Appendix G fan power formula was not included in an addendum because it occurred while 90.1 was still considered 'informative,' not 'normative,' as the currently proposed Addendum 'r' to A90.1-2007 is proposing to change. I believe the change to the fan power formula, however, was approved by LEED in a CIR, so you should be able to apply the new formula and pressure credits for the Appendix G PRM.</DIV>
<DIV>Bill</DIV>
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<DIV><FONT face=Technic>Bill Talbert, PE, <SPAN style="FONT-SIZE: 12pt; LAYOUT-GRID-MODE: line; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA"><SPAN style="FONT-SIZE: 12pt; LAYOUT-GRID-MODE: line; FONT-FAMILY: Technic; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial"><FONT size=2>LEED® AP</FONT></SPAN></SPAN><BR>Mechanical Systems</FONT></DIV>
<DIV><FONT face=Technic>Phone: (608) 441-6677<BR>E-mail: btalbert@aeieng.com<BR><BR>Affiliated Engineers Inc.<BR>5802 Research Park Blvd.<BR>Madison, WI. 53719<BR>Tel. (608) 238-2616<BR>Fax. (608) 238-2614</FONT></DIV></DIV>
<DIV><BR>>>> "Baker, Kristopher" <kbaker@syska.com> 10/25/2007 10:47 AM >>><BR>Any ideas if we can apply the new methodology, indicated in either<BR>Addenda ac for the 2004 version or addenda r for the 2007 version, to<BR>the Appendix G Performance Rating Method?<BR><BR>KB<BR>Kristopher S. Baker, PE<BR>LEED(r) Accredited Professional<BR>Associate<BR>Senior Sustainability Specialist - Sustainable Design &<BR>High Performance Building Technology<BR>Syska Hennessy Group, Inc.<BR><BR>Tel: 703.629.8028<BR>Direct Fax: 866.885.5621<BR>Email: kbaker@syska.com<BR><A href="http://www.syska.com/">http://www.syska.com</A> <BR>P Please consider the environment before printing this e-mail<BR>________________________________<BR><BR>This email and any files transmitted with it are the property of Syska<BR>Hennessy Group and are intended solely for the use of the individual or<BR>entity to which they are addressed. The information contained herein may<BR>include trade secrets or privileged or otherwise confidential<BR>information and unauthorized review, forwarding, printing, distributing,<BR>or using such information is strictly prohibited and may be unlawful. If<BR>you received this message in error, or have reason to believe you are<BR>not authorized to receive it, please promptly delete this message and<BR>notify the sender by e-mail. <BR>________________________________<BR><BR><BR>-----Original Message-----<BR>From: BLDG-SIM@gard.com [mailto:BLDG-SIM@gard.com] On Behalf Of Michael<BR>Rosenberg<BR>Sent: Wednesday, October 24, 2007 10:03 PM<BR>To: BLDG-SIM@gard.com<BR>Cc: sferguson@ashrare.org<BR>Subject: [BLDG-SIM] New Calculation method for Baseline Fan Energyin<BR>Addendum R<BR><BR>Mike and Andrew,<BR><BR>That is Addendum R that Andrew is referring to. It is actually Addendum<BR>R to 90.1, 2007. Even though 2007 has not been published yet, ASHRAE is<BR>already up to Addendum R. As for the calculation, Andrew made a good<BR>catch. It is a typo and should read CFM x 0.00094 + A and CFM x<BR>0.0013 + A.<BR><BR>Mike <BR><BR><BR>Michael Rosenberg<BR>Oregon Department of Energy<BR>625 Marion St. N.E.<BR>Salem, OR 97301-3742<BR>Phone : (503) 373-7809<BR>Fax: (503) 373-7806<BR><BR>>>> "Michael Tillou" <michael.tillou@gmail.com> 10/24/2007 11:39:01 AM<BR>>>><BR>I think you mean to be referencing ASHRAE 90.1-2004 addendum ac not<BR>addendum<BR>r which includes two new methods for calculating fan power limits. The<BR>first looks at total Motor HP which isn't very useful for energy<BR>modeling<BR>purposes and the second looks at fan brake-horsepower. The fan<BR>brake-horsepower equations are "(CFM x 0.00094) + A" and "(CFM x<BR>0.0013) +<BR>A" for constant volume and variable volume systems respectively. CFM is<BR>the<BR>design airflow rate and A is the brakehorse power adjustement for<BR>various<BR>pressure drop adjustments given in Table 6.5.3.1.1B.<BR><BR>Mike<BR><BR>Michael Tillou, PE, LEED<BR>Tillou Engineering, LLC<BR>Williamstown, MA 01267<BR>P: 413-458-9870 C: 413-652-1087<BR><BR><BR> _____ <BR><BR>From: BLDG-SIM@gard.com [mailto:BLDG-SIM@gard.com] On Behalf Of Andrew<BR>Craig<BR>Sent: Wednesday, October 24, 2007 11:56 AM<BR>To: BLDG-SIM@gard.com <BR>Subject: [BLDG-SIM] New Calculation method for Baseline Fan Energy in<BR>Addendum R<BR><BR><BR><BR><BR><BR>I was wondering if anyone out there can explain the new calculation<BR>shown<BR>for baseline fan brake horsepower in Table G3.1.2.9 of Addendum R to<BR>ASHRAE<BR>90.1-2004? At first glance, the equation doesn't make sense because you<BR>are<BR>subtracting a relatively small number (0.0013+A) from a large number<BR>(CFMs)<BR>leaving you with a ridiculously large baseline fan motor brake<BR>horsepower.<BR>Am I just reading this wrong or is there a typo? Isn't there an easier<BR>way<BR>out there to calculate baseline fan energy (please see version 1 of<BR>Appendix<BR>G for another confusing calculation)?<BR><BR>Andrew Craig, EIT, LEEDR AP | Mechanical Designer<BR><BR>INTERFACE ENGINEERING <BR>708 SW Third Avenue | Suite 400 | Portland, OR 97204 <BR><BR>direct: 503.382.2696<BR>office: 503.382.2266<BR>fax: 503.382.2262<BR>email: Andrew_C@ieice.com <BR>web: www.ieice.com <BR><BR>Consultants of Choice to the Built Environment for over 35 years<BR>Kirkland, WA | Portland, OR | Sacramento, CA | Salem, OR | SanFrancisco,<BR>CA<BR><BR><BR><BR><BR><BR>==================<BR><BR>You received this e-mail because you are subscribed <BR><BR>to the BLDG-SIM@GARD.COM mailing list. To unsubscribe <BR><BR>from this mailing list send a blank message to <BR><BR>BLDG-SIM-UNSUBSCRIBE@GARD.COM <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>==================<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>=====================================================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></DIV><PRE>
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