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<DIV id=idOWAReplyText17772 dir=ltr>
<DIV dir=ltr><FONT face=Arial color=#000000 size=2>Varkie,</FONT></DIV>
<DIV dir=ltr><FONT face=Arial size=2></FONT> </DIV>
<DIV dir=ltr><FONT face=Arial size=2>The answer to your question is Yes.
LEED is going to allow the inclusion of daylighting as part of EA1. They
have been working with ASHRAE to develop Appendix G for ASHARAE 90.1-2001 Energy
Code. Appendix G provides a methodology for modeling the energy
performance of a building using ASHRAE 90.1-2001 as the baseline. I think
(don't quote me) the intent is that LEED will adopt Appednix G as an acceptable
methodology for determining energy performance. The methodology addresses
many of the issues that are not addressed by the Cost Budget Method to show code
compliance. Appendix G will not replace the Cost Budget Method as a means
for showing code compliance. </FONT></DIV>
<DIV dir=ltr><FONT face=Arial size=2></FONT> </DIV>
<DIV dir=ltr><FONT face=Arial size=2>Appendix G has not been officially released
by ASHRAE, I am sure it will be soon though.</FONT></DIV>
<DIV dir=ltr><FONT face=Arial size=2></FONT> </DIV>
<DIV dir=ltr><FONT face=Arial size=2>Here is some of what it says about the
simulation of lighting systems that pertains to your question.</FONT></DIV>
<DIV dir=ltr><FONT face=Arial size=2><FONT face="Times New Roman"></FONT><FONT
face="Times New Roman"></FONT></FONT> </DIV>
<DIV dir=ltr>
<P align=left><FONT size=2>(f) Credit may be taken for the use of automatic
controls for daylight utilization but only if their operation is either modeled
directly in the building simulation or modeled in the building simulation
through schedule adjustments determined by a separate daylighting analysis
approved by the </FONT><I><FONT size=2>rating authority</FONT></I><FONT
size=2>.</FONT></P><FONT size=2><FONT face="Times New Roman" size=2>
<P align=left>(<FONT size=2>g) </FONT></FONT><FONT size=2><FONT
face="Times New Roman">For automatic lighting controls in addition to those
required for minimum code compliance under 9.2, credit may be taken for
automatically controlled systems by reducing the connected lighting power by the
applicable percentages listed in Table G3.8. Alternatively, credit may be taken
for these devices by modifying the lighting schedules used for the
</FONT><I><FONT face="Times New Roman">proposed design </I></FONT></FONT><FONT
size=2><FONT face="Times New Roman">provided credible technical documentation
for the modifications are provided to the </FONT><I><FONT
face="Times New Roman">rating authority</I></FONT></FONT><FONT
face="Times New Roman"><FONT size=2>. Table G3.8 is shown
below.</FONT></FONT></P>
<P align=left><FONT face="Times New Roman"><FONT size=2><FONT
face="Times New Roman">
<TABLE cellSpacing=0 width=692 border=0>
<TBODY>
<TR>
<TD width="33%"><FONT size=2> </FONT></TD>
<TD width="14%"><FONT size=2> </FONT></TD>
<TD width="53%" colSpan=3><B><FONT face="Times New Roman">
<P><FONT size=2>Non 24 hr.</FONT></B></FONT></P></TD></TR>
<TR>
<TD width="33%"><FONT size=2> </FONT></TD>
<TD width="14%"><FONT size=2> </FONT></TD>
<TD width="17%"><B><FONT face="Times New Roman">
<P><FONT size=2>&</FONT></B></FONT></P></TD>
<TD width="35%" colSpan=2><B><FONT face="Times New Roman">
<P><FONT size=2>All</FONT></B></FONT></P></TD></TR>
<TR>
<TD width="47%" colSpan=2><B><FONT face="Times New Roman">
<P><FONT size=2>Automatic Control Devices(s)</FONT></B></FONT></P></TD>
<TD width="17%"><B><FONT face="Times New Roman">
<P><FONT size=2><=5,000ft<SUP>2</B></SUP></FONT></FONT></P></TD>
<TD width="35%" colSpan=2><B><FONT face="Times New Roman">
<P><FONT size=2>Other</FONT></B></FONT></P></TD></TR>
<TR>
<TD width="47%" colSpan=2><FONT face="Times New Roman">
<P><FONT size=2>(1) Programmable timing control</FONT></FONT></P></TD>
<TD width="17%"><FONT face="Times New Roman">
<P><FONT size=2>10%</FONT></FONT></P></TD>
<TD width="35%" colSpan=2><FONT face="Times New Roman">
<P><FONT size=2>0%</FONT></FONT></P></TD></TR>
<TR>
<TD width="33%"><FONT face="Times New Roman">
<P><FONT size=2>(2) Occupancy sensor</FONT></FONT></P></TD>
<TD width="14%"><FONT size=2> </FONT></TD>
<TD width="17%"><FONT face="Times New Roman">
<P><FONT size=2>15%</FONT></FONT></P></TD>
<TD width="35%" colSpan=2><FONT face="Times New Roman">
<P><FONT size=2>10%</FONT></FONT></P></TD></TR>
<TR>
<TD width="33%"><FONT face="Times New Roman">
<P><FONT size=2>(3) Occupancy sensor and</FONT></FONT></P></TD>
<TD width="14%"><FONT face="Times New Roman">
<P><FONT size=2>programmable</FONT></FONT></P></TD>
<TD width="17%"><FONT face="Times New Roman">
<P><FONT size=2>timing</FONT></FONT></P></TD>
<TD width="35%" colSpan=2><FONT size=2> </FONT></TD></TR>
<TR>
<TD width="33%"><FONT face="Times New Roman">
<P><FONT size=2>control</FONT></FONT></P></TD>
<TD width="14%"><FONT size=2> </FONT></TD>
<TD width="17%"><FONT face="Times New Roman">
<P><FONT size=2>15%</FONT></FONT></P></TD>
<TD width="35%" colSpan=2><FONT face="Times New Roman">
<P><FONT size=2>10%</FONT></FONT></P></TD></TR>
<TR>
<TD colSpan=5><B><FONT face="Times New Roman">
<P><FONT size=2>Notes:</FONT></B></FONT><FONT face="Times New Roman"
size=2> The 5,000 ft<SUP>2</SUP> condition pertains to the total
conditioned floor area of</FONT></P></TD></TR>
<TR>
<TD width="33%"><FONT face="Times New Roman">
<P><FONT size=2>the building.</FONT></FONT></P></TD>
<TD width="14%"><FONT size=2> </FONT></TD>
<TD width="17%"><FONT size=2> </FONT></TD>
<TD width="35%" colSpan=2><FONT size=2> </FONT></TD></TR>
<TR>
<TD width="33%"></TD>
<TD width="14%"></TD>
<TD width="17%"></TD>
<TD width="18%"></TD>
<TD></TD></TR></TBODY></TABLE></P></FONT></FONT></FONT></FONT><FONT face=Arial
color=#000000 size=2></FONT></DIV></DIV>
<DIV id=idSignature5536 dir=ltr>
<DIV><FONT face=Arial color=#000000><B><FONT face="Times New Roman">
<P align=left><FONT size=2>G4.4 </FONT></FONT><I><FONT
face="Times New Roman"><FONT size=2>Baseline </FONT></I></FONT><FONT
face="Times New Roman"><FONT size=2>Lighting Systems</FONT></B></FONT><FONT
size=2><FONT face="Times New Roman">. Lighting power in the </FONT><I><FONT
face="Times New Roman">baseline building design </I></FONT></FONT><FONT
size=2><FONT face="Times New Roman">shall be determined using the same
categorization procedure (Building Area or Space Function) and categories as the
proposed design with lighting power set equal to the maximum allowed for the
corresponding method and category in 9.3. No automatic lighting controls (e.g.,
programmable controls or automatic controls for daylight utilization) shall be
modeled in the </FONT><I><FONT face="Times New Roman">baseline building
design</I></FONT></FONT><FONT face="Times New Roman"><FONT size=2>, as the
lighting schedules used are understood to reflect the mandatory control
requirements in this standard.</FONT></P></FONT></FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2>Hope this helps.</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>Michael Tillou, PE</FONT></DIV>
<DIV><FONT face=Arial size=2>etc Group, Inc.</FONT></DIV>
<DIV><FONT face=Arial size=2>PO Box 749 </FONT></DIV>
<DIV><FONT face=Arial size=2>North Adams, MA 01247</FONT></DIV>
<DIV><FONT face=Arial size=2>413-664-9070</FONT></DIV>
<DIV> </DIV></DIV>
<DIV dir=ltr><BR>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> postman@gard.com on behalf of Larry
Degelman<BR><B>Sent:</B> Thu 1/22/2004 9:43 AM<BR><B>To:</B>
BLDG-SIM@GARD.COM<BR><B>Subject:</B> [BLDG-SIM] Day-Lighting and
DOE2.1E<BR></FONT><BR></DIV>
<DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Just a side note of
interest (with no judgment inferred):</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">ASHRAE/IESNA Standard
90.1-1999 no longer allows lighting control credits.
<SPAN> </SPAN>Compliance is based on connected lighting power alone.
<SPAN> </SPAN>With the 1989 Standard, credits could be taken for automatic
controls/sensors and daylighting controls. <SPAN> </SPAN><SPAN
class=GramE>(Inference about the dependability of lighting
sensors/controls???</SPAN> – I don’t know.)</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Furthermore, VLT
(Visible Light Transmittance) is not considered in the Prescriptive Envelope
Option, but it is considered in the Envelope Trade-off Option, a la Chapter 5
(Sect. 5.3.2.4 and 5.4).</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Regards,</SPAN></FONT></P>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" color=navy size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: navy">=====================================
</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Larry O. Degelman,
P.E.
<A href="mailto:larry@taz.tamu.edu">larry@taz.tamu.edu</A> </SPAN></FONT><FONT
color=navy><SPAN style="COLOR: navy"></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Prof. Emeritus of
Architecture Ph./Fax: 1-979-696-2506</SPAN></FONT><FONT
color=navy><SPAN style="COLOR: navy"></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Texas A&M
University</SPAN></FONT><FONT color=navy><SPAN
style="COLOR: navy"></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" color=navy size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: navy">=====================================</SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" color=navy size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: navy"></SPAN></FONT> </P></DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Tahoma size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original
Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B>
postman@gard.com [mailto:postman@gard.com] <B><SPAN style="FONT-WEIGHT: bold">On
Behalf Of </SPAN></B>Varkie Thomas<BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Wednesday, January 21, 2004 3:37
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B>
BLDG-SIM@gard.com<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B>
[BLDG-SIM] Day-Lighting and DOE2.1E</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=navy size=3><SPAN style="FONT-SIZE: 12pt; COLOR: navy">Can day-lighting
controls be considered for LEED certification under “Energy & Atmosphere –
Optimize Energy Performance”? If so where should the light sensor be
located in the space? Is there any energy code that allows credit for
day-lighting controls? The DOE2 program allows two light sensors per
space. Supposing the two sensors are located 5 ft and 10 ft from the
window. Is the average daylight at these two points used in determining
the reduction in artificial lighting?</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=navy size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: navy"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=navy size=3><SPAN style="FONT-SIZE: 12pt; COLOR: navy">The DOE2 program
expects zones to have 6 surfaces defined with X,Y,Z coordinates and reflectance
values for day-lighting analysis. Ignoring this produces warning messages
but the results show a reduction in artificial lighting energy. For
day-lighting analysis we only enter into DOE2 the X,Y coordinates of the window
origin relative to the wall and also the wall and window dimensions. Can
we assume that the energy savings results from the DOE2 program are on the safe
side (the actual energy saved is more) when we use the program without all the
surfaces and coordinates?</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=navy size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: navy"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=navy size=3><SPAN style="FONT-SIZE: 12pt; COLOR: navy">Are there any rules
for day-lighting analysis for establishing energy savings and for comparing the
results from different studies?</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=navy size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: navy"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=navy size=3><SPAN style="FONT-SIZE: 12pt; COLOR: navy">Varkie
Thomas</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=navy size=3><SPAN style="FONT-SIZE: 12pt; COLOR: navy">Skidmore, Owings
& Merrill LLP</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
color=navy size=3><SPAN style="FONT-SIZE: 12pt; COLOR: navy">Tel: (312) 360-4467
(direct)</SPAN></FONT></P><PRE style="MARGIN-LEFT: 0.5in"><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"> </SPAN></FONT></PRE><PRE style="MARGIN-LEFT: 0.5in"><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"> </SPAN></FONT></PRE><PRE style="MARGIN-LEFT: 0.5in"><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">==================</SPAN></FONT></PRE><PRE style="MARGIN-LEFT: 0.5in"><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">You received this e-mail because you are subscribed </SPAN></FONT></PRE><PRE style="MARGIN-LEFT: 0.5in"><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">to the BLDG-SIM@GARD.COM mailing list.<SPAN> </SPAN>To unsubscribe </SPAN></FONT></PRE><PRE style="MARGIN-LEFT: 0.5in"><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">from this mailing list send a blank message to </SPAN></FONT></PRE><PRE style="MARGIN-LEFT: 0.5in"><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">BLDG-SIM-UNSUBSCRIBE@GARD.COM</SPAN></FONT></PRE></DIV><PRE>==================
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