<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>Thanks for your assistance Khalid! I hadn't used the Average Daylight Factor equation since undergrad years: totally forgot about it. I should have been more specific when I referred to 'window options', but I meant window size, distribution and location (i.e. orientation, head-height, etc.).<br></span></div><div> </div><div>Paul Hay MBA, BA(Arch)<br>Managing Partner<br>PAUL HAY Capital Projects<br><br><span style="font-style:italic;">Caribbean Capital Project Management & Planning</span><br><br><img
src="data:image/png;base64,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
gpLxUY/7hn+CcKHrPIhJZkERQJSxotINPRBFdfGTxIeVc4itFkfhKOOIsI6AdEyKJr7RtK+7AirVaOZc+d4JPaCSwDhwisukaQrI+kygGSiAVYstcAdSyb2cIVsJEwETYFi2WbpO/5F1f2fxxK1IXTAPWY3r23SDCaMetZ/3znq1vdEZMfKWzY4oJbz7KGlT3TQhUDBkSEXz0oCN4D/NlrrDfgOLT6nQZGOrPxFdirjgJHD6ccFFFEUz9Vu+yNivsNNyWp3mp5qY9kw6dbVa3HU2TdUwW1MCOBm2ZKwJ8mSt6F4RC0RLQ3Oj+DQkZ+NqciOIEMebqHAFHlE5/SGcMRRZLHOCwnGeuImLr2NrtW2pkMRN3PblEEWTr1tVJqwIi0uvEKZFd3i1zLVqalqIF3+3LXNsxty3MixZUDqy0Yx2nTLhdT/XKy2cBzP8A098NlYzuV+MAAAAASUVORK5CYII=" alt=""><br><br>P.O.Box 3367<br>Constant Springs, Kgn. 8<br>Jamaica, W.I.<br><br></div><div class="yiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt;" lang="EN-US">tel: 1 (876) 756-0631</span></font></div><div class="yiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt;" lang="EN-US">cel: 1 (876) 324-4274</span></font></div><div class="yiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt;" lang="EN-US">fax: 1 (876)
756-0631</span></font></div><div class="yiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt;" lang="EN-US"> </span></font></div><div class="yiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt;" lang="EN-US">e-mail: paul.hay@phcjam.com</span></font></div><div class="yiv150174847MsoNormal"><font size="2"><span style="font-size:9pt;" lang="EN-US">skype name: phcjam</span></font></div><div class="yiv150174847MsoNormal"><font size="2"><span style="font-size:9pt;" lang="EN-US">twitter: http://www.twitter.com/phcjam</span></font></div><div class="yiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt;" lang="EN-US">web: http://www.phcjam.com</span></font></div><div class="yiv150174847MsoNormal"><font size="2"><span style="font-size:9.0pt;" lang="EN-US">profile: http://www.linkedin.com/company/paul-hay-capital-projects</span></font></div><div class="yiv150174847MsoNormal"><font size="2"><span
style="font-size:9.0pt;" lang="EN-US"><br></span></font></div><div class="yiv150174847MsoNormal"> <br></div><br><br><div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"><div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"><font face="Arial" size="2"><hr size="1"><b><span style="font-weight:bold;">From:</span></b> khalid Alshaibani <kshaibani@gmail.com><br><b><span style="font-weight: bold;">To:</span></b> 'Paul Hay' <phcjam@yahoo.com><br><b><span style="font-weight: bold;">Sent:</span></b> Wednesday, August 17, 2011 3:10 PM<br><b><span style="font-weight: bold;">Subject:</span></b> RE: [Bldg-sim] Advise on Daylighting program<br></font><br><div id="yiv685348742"><style><!--
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--></style><div class="yiv685348742WordSection1"><div class="yiv685348742MsoNormal"><span style="font-size:11.0pt;font-family:"sans-serif";color:#1F497D;">Paul, it is not clear for me what you mean by window options; if u mean window area, then u can use the Average Daylight Factor equation which is a very simple equation where you can decide on window area and glazing transmittance. The equation is based on the Overcast Sky as a design sky, however, If you can decide on the type of design sky (the external horizontal illuminance) then you can use such equation.</span></div><div class="yiv685348742MsoNormal"><span style="font-size:11.0pt;font-family:"sans-serif";color:#1F497D;"> </span></div><div class="yiv685348742MsoNormal"><span style="font-size:11.0pt;font-family:"sans-serif";color:#1F497D;">If you are looking for a program that can do daylighting analysis, then ther are a lot of programs such; Ecotect, SPOT,
DAYSIM, SUPERLITE 2.0, etc …</span></div><div class="yiv685348742MsoNormal"><span style="font-size:11.0pt;font-family:"sans-serif";color:#1F497D;">If want to study the effect of window area on energy consumption, then u need to use energy simulation programs, such as EnergyPlus and DOE-2</span></div><div class="yiv685348742MsoNormal"><span style="font-size:11.0pt;font-family:"sans-serif";color:#1F497D;"> </span></div><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm;"><div class="yiv685348742MsoNormal"><b><span style="font-size:10.0pt;font-family:"sans-serif";">From:</span></b><span style="font-size:10.0pt;font-family:"sans-serif";"> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Paul Hay<br><b>Sent:</b> Wednesday, August 17, 2011 9:12 PM<br><b>To:</b> Bldg-Sim<br><b>Subject:</b> [Bldg-sim] Advise on
Daylighting program</span></div></div></div><div class="yiv685348742MsoNormal"> </div><div><div><div class="yiv685348742MsoNormal" style="background:white;"><span style="color:black;">Can anyone advise if there is a daylighting program that uses intended illumination levels to generate window options? I remember reading about one long ago from an article by Eliyahu Ne'Eman: I believe from LBL UC(Berk.). I never heard of it since that article in Energy & Buildings.</span></div></div><div><div class="yiv685348742MsoNormal" style="background:white;"><span style="color:black;"> </span></div></div><div><div class="yiv685348742MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="color:black;">Paul Hay MBA, BA(Arch)<br>Managing Partner<br>PAUL HAY Capital Projects<br><br><i>Caribbean Project Management & Planning</i><br><br><span style="border:solid windowtext 1.0pt;padding:0cm;"><img id="yiv685348742Picture_x0020_1"
src="cid:1.648237924@web112612.mail.gq1.yahoo.com" alt="Image removed by sender." height="100" width="100"></span><br><br>P.O.Box 3367<br>Constant Springs, Kgn. 8<br>Jamaica, W.I.</span></div></div><div><div class="yiv685348742MsoNormal" style="background:white;"><span style="font-size:9.0pt;color:black;">tel: 1 (876) 756-0631</span><span style="color:black;"></span></div></div><div><div class="yiv685348742MsoNormal" style="background:white;"><span style="font-size:9.0pt;color:black;">cel: 1 (876) 324-4274</span><span style="color:black;"></span></div></div><div><div class="yiv685348742MsoNormal" style="background:white;"><span style="font-size:9.0pt;color:black;">fax: 1 (876) 756-0631</span><span style="color:black;"></span></div></div><div><div class="yiv685348742MsoNormal" style="background:white;"><span style="font-size:9.0pt;color:black;"> </span><span style="color:black;"></span></div></div><div><div class="yiv685348742MsoNormal"
style="background:white;"><span style="font-size:9.0pt;color:black;">e-mail: paul.hay@phcjam.com</span><span style="color:black;"></span></div></div><div><div class="yiv685348742MsoNormal" style="background:white;"><span style="font-size:9.0pt;color:black;">skype name: phcjam</span><span style="color:black;"></span></div></div><div><div class="yiv685348742MsoNormal" style="background:white;"><span style="font-size:9.0pt;color:black;">twitter: http://www.twitter.com/phcjam</span><span style="color:black;"></span></div></div><div><div class="yiv685348742MsoNormal" style="background:white;"><span style="font-size:9.0pt;color:black;">web: http://www.phcjam.com</span><span style="color:black;"></span></div></div><div><div class="yiv685348742MsoNormal" style="background:white;"><span style="font-size:9.0pt;color:black;">profile: http://www.linkedin.com/company/paul-hay-capital-projects</span><span style="color:black;"></span></div></div><div><div
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