<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Dariush K. Arasteh</style></author><author><style face="normal" font="default" size="100%">Stephen E. Selkowitz</style></author><author><style face="normal" font="default" size="100%">J. Wolfe</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The Design and Testing of a Highly Insulating Glazing System for Use with Conventional Window Systems</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Solar Energy Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1988</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://eetd.lbl.gov/sites/all/files/publications/24903.pdf</style></url></related-urls></urls><volume><style face="normal" font="default" size="100%">111</style></volume><pages><style face="normal" font="default" size="100%">44-53</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;In most areas of the United States, windows are by far the poorest insulating materialsused in buildings. As a result, approximately 3% of the nations energy use is used tosoffset heat lost through windows. Under cold conditions, conventional double glazingsscreate uncomfortable spaces and collect condensation. However, with the recent introductionsof low-emissivity (low-E) coatings and low/conductivity gas filling to respectivelysreduce radiative and conductive/convective heat transfer between glazing layers, somesmanufacturers are beginning to offer windows with R-values (resistance to heat transfer)sof 4 hr-ft2- F/Btu (0.70 m2-C/W). This paper presents designs for and analysis and testsresults of an insulated glass unit with a center-of-glass R-value of 8-10; approximatelystwice as good as gas-filled low-E units and four times that of conventional double glazing. This high-R design starts with a conventional insulated-glass unit and adds twoslow-emissivity coatings, a thin glass middle glazing layer, and a Krypton orsKrypton/Argon gas fill. The units overall width is 1 (25 mm) or less, consistent withsmost manufacturers frame and sash design requirements. Using state-of-the-art low-emissivity coatings does not significantly degrade the solar heat gain potential or visiblestransmittance of the window. Work to date has substantiated this concept of a high-Rswindow although specific components require further research and engineering development. Demonstration projects, in conjunction with utilities and several major window manufacturers, are planned. This high-R window design is the subject of a DOE patent application.&lt;/p&gt;</style></abstract><call-num><style face="normal" font="default" size="100%">LBL-24903</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-24903</style></custom2></record></records></xml>