<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Joseph H. Klems</style></author><author><style face="normal" font="default" size="100%">Jeffrey L. Warner</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A New Method for Predicting the Solar Heat Gain of Complex Fenestration Systems</style></title><secondary-title><style face="normal" font="default" size="100%">Thermal Performance of the Exterior Envelope of Buildings V Conference Proceedings</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/1992</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://eetd.lbl.gov/sites/all/files/publications/32198.pdf</style></url></related-urls></urls><pub-location><style face="normal" font="default" size="100%">Clearwater Beach, FL</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;A new method of predicting the solar heat gain through complex fenestration systems involving nonspecular layers such as shades or blinds has been examined in a project jointly sponsored by ASHRAE and DOE.  In this method, a scanning radiometer is used to measure the bi-directional radiative transmittance and reflectance of each layer of a fenestration system.  The properties of systems containing these layers are then built up computationally from the measured layer properties using a transmission/multiple-reflection calculation.  The calculation produces the total directional-hemispherical transmittance of the fenestration system and the layer-by-layer absorptances.  These properties are in turn combined with layer-specific measurements of the inward-flowing fractions of absorbed solar energy to produce the overall solar heat gain coefficient.&lt;/p&gt;&lt;p&gt;The method has been applied to one of the most optically complex systems in common use, a venetian blind in combination with multiple glazings.  A comparison between the scanner-based calculation method and direct system calorimetric measurements made on the LBL MoWiTT facility showed good agreement, and is a significant validation of the method accuracy and feasibility.&lt;/p&gt;</style></abstract><call-num><style face="normal" font="default" size="100%">LBL-32198</style></call-num><custom1><style face="normal" font="default" size="100%">&lt;p&gt;Windows and Daylighting Group&lt;/p&gt;</style></custom1><custom2><style face="normal" font="default" size="100%">LBL-32198</style></custom2></record></records></xml>