Abstract
The study focuses on the issue of coated thin plastic films overheating due to the absorption of solar radiation. These films are suspended within the sealed space of dual-pane insulating glass units (IGU). Films are deformed due to thermal stress and the glazing ceases to carry out its function. The surface temperature of the glazing system was evaluated from energy balance during a sunny day. It was supposed the intensity of solar radiation 1000 W/m2. Solar radiation incidents perpendicular to the surface of the glazing. Spectroscopic measurement was performed and optical properties of glasses and films were evaluated. Finally, suitable glazing was designed, which partially prevents transmission of the solar radiation into the inner space of glazing and the thin plastic films are not significantly overheated.
Highlights
Heat mirror coating finds use in many technical fields, mainly with applications in windows [1] and solar collectors [2]
Selkowitz [3] claims that thanks to the heat mirror glazing system, it is possible to save 25–75% of energy compared to ordinary glazing
The solar optical properties of thin metal layers applied to glass or film are very well studied
Summary
Heat mirror coating finds use in many technical fields, mainly with applications in windows [1] and solar collectors [2]. This study focuses on heat mirror in multiple glazing with an inner plastic sheet This polymer film is stretched inside the glazing and divides the gas space into two. The task of this study is to determine the film surface temperature in thermodynamic equilibrium under given ambient conditions This approach can demonstrate how heat mirror films are thermally stressed by intense sunlight. At the end of this study, several types of glazing with coated or uncoated sheets (glass, polymer film) are compared with respect to their thermal insulation and optical properties. When solving the heat transfer by radiation between surfaces of glasses or polymer films, it is necessary to consider their wavelength-dependent optical properties. For calculation surface temperature of polymer film exposed to direct solar radiation, it will be necessary to determine the amount of absorbed energy based on the relationships from geometric optics and ray tracing
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
