提高窗户的能源效率.pdf

1、Window Energy Efficiency forBuilding Retrofit&New ConstructionDavid Mather2Windows Consume Up to 30%of Building Heating and Cooling Energy.142%less solar heat gain2Solar ControlNxLite Low-E and Solar Control CoatingsInsulation44%less energy transfer3Visible Light 87%light transmission4Transmits brig

2、ht light Preserves thermal barrier Blocks suns heat Up toUp toUp to34Unique BenefitsNxLite Coatings Are Open Air Stable.Traditional low-E coatings corrode quickly when they are not sealed in an air-tight cavity.NxLite Coatings Can Be Applied to Lightweight Polymeric Materials.Up to 52%less weight th

3、an comparable glass.5Most Buildings Before 2009 Have Very Inefficient Windows.5Upgrading the Performance of Older Windows to Todays Standard Can Drive Significant Energy Savings.0%10%20%30%40%50%60%70%80%90%before19501950 to19591960 to19691970 to19791980 to19891990 to19992000 to20092010 to2020Commer

4、cial Low-E Adoption by Building Vintage76 Thermal Performance Solar Control Cost Effective Easier Installation than Replacement Improved Air Leakage Noise Reduction Improved Comfort Reduced Condensation Improved Durability Better Aesthetics Green Incentives Lightweight,Energy-Efficient Alternative t

5、o Window ReplacementHigh-Performance Inserts with NxLite CoatingsU-factorInsulationLower is betterBTU/hr*ft2*FSHGCSolar Heat Gain%of heat throughSingle Pane Glass1.0382Climate Zone 4 Office Building76mm clearU-factorInsulationLower is betterBTU/hr*ft2*FSHGCSolar Heat Gain%of heat throughSingle Pane

6、Glass1.0382NxLite Coated Insert0.2957+Over 70%improvementOver 30%reductionClimate Zone 4 Office BuildingImpact86mm clear5.6mm PMMA with NxLite L80 9Insert SurfaceGlass SurfaceGlass SurfaceInsert SurfaceInsert surface stayed 2-4 F closer to interior set points throughout testingTemperature TimeGlass