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Thermal Comfort
Published in Neha Gupta, Gopal Nath Tiwari, Photovoltaic Thermal Passive House System, 2022
The windows, as discussed in Section 3.2.9.1, when made up of smart glass materials are termed smart glass windows. The smart glass changes its optical properties (transforms from transparent to different levels of tint) by passing a low voltage through intelligent controllers into the panels. Smart glass combined with intelligent controls makes buildings more energy efficient, allows more natural daylight, provides increased comfort for occupants, and eliminates heat and glare with no shades or blinds required.
Types, Properties, Applications, and Emerging Technologies of Smart Windows
Published in Avinash Balakrishnan, Praveen Pattathil, Nanostructured Electrochromic Materials for Smart Switchable Windows, 2018
Avinash Balakrishnan, Praveen Pattathil
Smart windows or switchable windows are comprised of glass or glazing whose light transmission properties are altered when voltage, light, or heat is applied [31–34]. Smart windows can control the throughput of visible light and heat flow into buildings. This can impart energy efficiency by having different transmittance levels depending on the requirements. Unlike shades, smart windows have the ability to partially block the light while maintaining a clear vision of what lies behind the window. Smart glass can be precisely tuned to control the intensity of light, glare, and heat passing through a window. These days, in both commercial and household buildings, facades with smart glass technology are utilized, which reduces the dependency on air conditioning during the summer months and heating during the winter. The capability of switchable glass to provide controllable light conditions during peak and off-peak time of the day makes it valuable and unique. Expectations of demand growth for switchable glass are high. Besides their increasing installation in green energy efficient buildings, demand for smart switchable glass windows is also expected to grow in the automotive, marine, power generation, and construction sectors. The global smart glass market size is targeted to reach $9.98 billion by 2025 [35,36].
Nanotechnology Impact on the Automotive Industry
Published in Kaufui V. Wong, Nanotechnology and Energy, 2017
Kaufui V. Wong, Patrick Andrew Paddon
Smart glass was born from developments in electrochromism, which is the ability of certain materials to change colors in response to charges. This presents a valuable technology for use in the automotive industry as the majority of vehicles are exposed to sunlight daily. This exposure leads to energy needs for cooling the interior of the car. This technology was first implemented in rearview mirrors, using an interior electrochromic (EC) reflective element to control the reflectance levels [32]. The technology works by changing optical properties with variable voltages to absorb the incoming light into color centers produced by ions at electrodes, resulting in minimal light being reflected [1].
Using smart glazing for reducing energy consumption on existing office building in hot dry climate
Published in HBRC Journal, 2020
Asmaa Nageib, Abbas Mohamed Elzafarany, Mohamed Helmy Elhefnawy, Fatma Osman Mohamed
The solar radiation control of smart glass leads to more benefits in saving cooling energy. Also, it can switch to a high transparent state to gain appropriate solar heat gain and reduce heat load when there is a heating-needed. The total annual energy consumption values for each type of glass were calculated and the values were expressed in KWh/m2 for the cooling. It can be observed that EC glass reduces the cooling energy consumed compared to clear glass in all orientations, while cooling consumption increased when using GC glass. Also, TC glass was increased in cooling energy in summer, due to an increased transmittance of solar radiation, which results in higher energy consumptions compared to all types of glass. On the other hand, tinted blue glass is effective in saving cooling energy compared with clear and brown glass.
Solar shading devices integrating smart materials: an overview of projects, prototypes and products for advanced façade design
Published in Architectural Science Review, 2019
Static shading devices can be integrated with smart materials in order to achieve adaptive properties. For instance, self-adhesive polymer solar films can be applied on the inside or outside of a window or glazed façade in order to change solar energy transmission, ultraviolet transmission, infrared transmission and visible light transmission (3M 2019) (Merrill et al. 2000). Double-glazed windows can be integrated with smart glass technologies in order to alter their light transmission properties when voltage, light or heat is applied. The glass changes from translucent to transparent, blocking some or all wavelengths of light or letting light pass through (Smith and Wiley 1994).