High Energy-Efficient Windows with Silica Aerogel for Building Refurbishment: Experimental Characterization and Preliminary Simulations in Different Climate Conditions
Abstract
:1. Introduction
2. Materials and Methods
2.1. The Investigated Samples
2.2. Experimental Campaign
2.3. Simulations
3. Results and Discussion
3.1. Optical and Thermal Performance
3.2. Energy Performance
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Name | External Layer | Interspace | Internal Layer | Window Frame |
---|---|---|---|---|
DGU | Float clear glass (4 mm) | Air (15 mm) | Float clear glass (4 mm) | Type 1 aluminum |
DGU-AEROGEL | Float clear glass (4 mm) | Granular aerogel type “A” (15 mm) | Float clear glass (4 mm) | |
LOW-E DGU | Solar control and low-e glass (4 mm) | Air (15 mm) | Float clear glass (4 mm) | Type 2 wood |
LOW-E DGU-AEROGEL | Solar control and low-e glass (4 mm) | Granular aerogel type “B” (15 mm) | Float clear glass (4 mm) |
Internal Loads | Values | Schedule | ||
Lighting | 7 W/m2 (500 lux, fully dimmable) | 8:00–18:00 five days a week | ||
People | 0.05 persons/m2 | |||
Equipment | 7 W/m2 | |||
Operating Periods of Heating and Cooling System and schedule | ||||
City | Heating (20 °C) | Cooling (26 °C) | Schedule | |
Rome | 1 November–15 April | 16 April–14 October | 7:00–19:00 five days a week | |
Paris | 15 October–30 April | 1 May–14 October | ||
Ottawa | 15 October–30 April | 1 May–14 October |
Acronym | Light Transmittance τv | Light Reflectance ρv | Direct Solar Transmittance τe | Solar Reflectance ρe | Total Solar Transmittance g | U–value (W/m2·K) |
---|---|---|---|---|---|---|
DGU | 0.82 | 0.15 | 0.76 | 0.14 | 0.80 | 2.7 |
DGU-AEROGEL | 0.57 | 0.38 | 0.53 | 0.31 | 0.57 | 1.0 |
LOW-E DGU | 0.63 | 0.27 | 0.39 | 0.43 | 0.41 | 1.6 |
LOW-E DGU-AEROGEL | 0.57 | 0.32 | 0.35 | 0.46 | 0.36 | 1.1 |
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Buratti, C.; Moretti, E.; Zinzi, M. High Energy-Efficient Windows with Silica Aerogel for Building Refurbishment: Experimental Characterization and Preliminary Simulations in Different Climate Conditions. Buildings 2017, 7, 8. https://doi.org/10.3390/buildings7010008
Buratti C, Moretti E, Zinzi M. High Energy-Efficient Windows with Silica Aerogel for Building Refurbishment: Experimental Characterization and Preliminary Simulations in Different Climate Conditions. Buildings. 2017; 7(1):8. https://doi.org/10.3390/buildings7010008
Chicago/Turabian StyleBuratti, Cinzia, Elisa Moretti, and Michele Zinzi. 2017. "High Energy-Efficient Windows with Silica Aerogel for Building Refurbishment: Experimental Characterization and Preliminary Simulations in Different Climate Conditions" Buildings 7, no. 1: 8. https://doi.org/10.3390/buildings7010008