Spectrally selective laminated glazing consisting of solar control and heat mirror coated glass: preparation, characterization and modelling of heat transfer (original) (raw)

Glass plays significant role in science and industry with the prospect of substantially improving energy conservation, which is the most urgent issue of our time. Nanotechnology solution-finding has pushed the glass agenda far beyond expectations. Properties enhanced by Nanocoatings change glass technology, a traditional process, into viable solution for energy saving architectures. Further demands are emerging out of novel applications that rely on unique properties of glass, that is hard, brittle, transparent, yet sustainable, allowing tailored control over heat and light. Nonetheless, glass potentials need to be further explored in areas other than city-use for a comprehensive account of energy conservation. The heat transfer includes contribution from infrared IR part of the sun-light through thermal radiation, and conduction properties of glass materials, and atmosphere, and gas convection. Windows are only gatekeepers of passage of radiation that is crucial for transmittance, but also for reflectance that allows heat loss or gain. Therefore by modification of glass materials this function can be reasonably controlled. This paper describes materials used in thin film technology deposited on glass with particular application as solar efficient windows. A logframe is developed to illustrate combinations of multiple-layers of semiconductors that show unique properties to control heat and light of solar radiation. Next, transparent conductive metals and oxides deposited on thin films and expressions to take measure of their properties due to volume plasmon effects of free electrons in action are explained, with potential solutions suggested for various needs in warm, cold, and mixed climates. Finally, it elaborates on large area coating techniques that are commercially available, along with advantages and disadvantages of suggested Atmospheric Pressure Chemical Vapour Deposition APCVD technique that can be applied in on-line float glass manufacturing.