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<title>specific energie in office buildings</title>
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<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;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>
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style='font-size:12.0pt;color:navy'> </span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;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><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> </span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;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><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> </span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>Varkie Thomas</span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>Skidmore, Owings & Merrill LLP</span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>Tel: (312) 360-4467 (direct)</span></font></p>
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