Thermal and Optical Properties of Low-E Storm Windows and Panels
Installing low-emissivity (low-E) storm windows and panels over existing windows has been identified as a cost-effective new approach for improving the energy efficiency of existing buildings where window replacement is impractical or too expensive. As such, it is desirable to characterize the key energy performance properties of low-E storm windows and panels when installed over different types of existing primary windows. this paper presents the representative U-factors, solar heat gain coefficients (SGHCs) and visible transmittance properties of the combined assemblies of various storm windows and panel types installed over different primary windows.
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- Resource Type:
- Technical Report
- Research Org:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
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- Country of Publication:
- United States
- storm windows; storm panels; insulating panels; U-factor; solar heat gain coefficient; visible transmittance; energy savings
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