| Autor: |
Stahl, K. Hartig, W. D. Munz, V. Wittwer, M. Scherer |
| Rok vydání: |
1983 |
| Předmět: |
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| Zdroj: |
Optical Materials and Process Technology for Energy Efficiency and Solar Applications. |
| ISSN: |
0277-786X |
| DOI: |
10.1117/12.936293 |
| Popis: |
Energy consumption can be reduced from room heating using coated architectural glass panes. With a system oxide/metal/oxide high transmittance in the visible as well as high reflectance in the thermal infrared can be achieved2-7. This heat mirrors can be deposited economically by diode- and high rate sputtering. Of most interest are heat mirrors based on Cu, Ag and Au coatings. In the visible Au and Cu show a remarkable amount of absorptance which leads to a clear decrease in visible light transmittance. Best results are obtained with Ag based coatings. Ag is still high reflective even at the near U-V region. This part of re-flected energy can be converted to transmittance by a properly designed optical interference stack of the type oxide/metal/oxide. For a single pane an average value of visible light transmittance between 380 nm and 780 nm of 81 % is possible without loss of infrared reflec-tance at 8 4m below 90 % which corresponds to a low-emittance of 0.1. For this high quality a smooth growth of the Ag layer is necessary. Experiments have shown that a bombardement of the Ag layer with high energetic ions must be avoided as far as possible.© (1983) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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