Channel: Ig equipment
Quanex Building Products: production and market considerations between designs

2011-05-01 | Ig equipment

Energy efficiency – an ever more important and continuously developing request for homeowners and builders. Present demands are moving toward R-5 thermal resistance values and, therefore, manufacturers of windows need to have the technologies required to reach these high standards. In this article, Quanex shows us how R-5 values can be obtained without the need for additional materials, but by using a combination of low-E coating and thermally efficient components.

Quanex Building Products: production and market considerations between designs
The global window industry is on a charted path toward improved energy efficiency. In the United States, for example, both new construction and remodel and replacement markets are moving toward common efficiency standards. These markets are converging near a future recommended R-5 rating – or U-values of 0.22 for operable windows and 0.20 for non-operable windows. This convergence and other market factors are driving manufacturers to embrace high-performance technologies that provide more efficient windows for consumers. The growing demand for R-5 windows has initiated a surge in triple-pane window designs (triples) coming to market. However, contrary to popular thought, manufacturers are able to meet R-5 demands without investing in the additional raw materials and production reconfigurations required to add triples to their manufacturing operations. Instead, they can achieve R-5 values in double-pane windows (doubles) by using a combination of low-emissivity (low-E) coatings and thermally efficient components. Therein lies a dilemma between which R-5 design to produce. This article will examine the logistical inputs manufacturers need to contemplate when making that decision.

DESIGN CONSIDERATIONS
With new and shifting standards pushing window performance ratings higher, insulating glass unit (IGU) fabricators and window manufacturers need to determine how to best meet market demands. That process may involve rethinking their selection of window components to include more a...


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Article taken from Glass-Technology International bi-monthly magazine (6 issues per year)
Year: 2011 number: 3
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