#smart window

[blindsmagicusa]

Roller Shades Accessories for Smart Window Solutions by BlindsMagic

Explore premium roller shades Accessories for Windows at BlindsMagic. From motorized controls to light blockers and mounting kits, find everything you need to upgrade your smart window shades with ease.

[smartkinetic]

Many ask what is smart glass and smart film? Why should I choose smart glass and smart film? 

Smart glass and smart film are unlike any ordinary glass panel; they could enhance your work and home experience in many interesting ways. Please read on to find out more info!

Smart Glass and Smart Film, some call it switchable film, smart glass, magic window, smart glass film and many more. They have a multitude of uses, thanks to the addition of a Polymer Dispersed Liquid Crystal (PDLC). It’s a unique kind of thin layer of adhesive film that can change ordinary glass from transparent to opaque in a split second for instant privacy

Smart glass and smart film are a contemporary winner compared with curtains and blinds. Because curtains and blinds are a hot spot for accumulating dust and dirt! They involve frequent cleaning to ensure cleanliness, can be extremely troublesome to upkeep.  Hence smart glass and smart film are a perfect option to replace curtains and blinds. They accomplish the same feats, along with added advantages and require almost zero maintenance, no more unhinged and wash like the others do! 

Apart from that, smart glass and smart film effectively reject up to 99% UV rays, they strengthen the glass to prevent shattering, they give stylish, sleek & neat for an aesthetically pleasing environment and they are long-lasting. They can be used as a projector screen, digital signage, large projector video walls, LED displays, touch-activated information boards. Cost-effective with all the advantages mentioned.  

If you would like to enquire about smart glass or smart film, feel free to reach out!

Operating Hour: Mon-Fri, 9am-6pm

Address : 33 Ubi Ave 3 #03-39 Vertex 408868 Singapore

Contact No. : +65 8800. 9170  |  O: +65 6282. 2508

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Instagram : www.instagram.com/smartkinetic/

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[nuadox]

A novel energy-saving glass that ‘self-adapts’ to heating and cooling demand (video)

- By Nuadox Crew -

A team of researchers led by Nanyang Technological University, Singapore (NTU Singapore) has developed “a material that, when coated on a glass window panel, can effectively self-adapt to heat or cool rooms across different climate zones in the world, helping to cut energy usage.”

> Video: “Glass that adapts to heating and cooling needs” by NTUsg, YouTube.

Source: Nanyang Technological University

Full study: “Scalable thermochromic smart windows with passive radiative cooling regulation”, Science.

https://doi.org/10.1126/science.abg0291

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Header image: Geometric glass, Credit: Pexels, Pixabay License.

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Smart windows could reduce the need for energy-hungry air conditioners

[nuadox]

Smart windows could reduce the need for energy-hungry air conditioners

- By Fintan Burke , Horizon -

Roughly 75% of EU buildings are energy inefficient and countries now are looking to retrofit old buildings to prevent a costly leakage of heat. But despite the brainpower invested to make buildings more energy efficient, the design of windows has until recently not used a lot of modern technology, says Ioannis Papakonstantinou, a professor of nanoengineering at University College London, UK. His research project Intelglazing is using new ideas in nanotechnology and photonics (the physics of light) to create nanometre-thin window coatings that better insulate buildings.

This had been tried before in industry, but all the previous efforts fell short - they either blocked out too little sunlight or were too expensive to make.

‘If you start blending these (window) coatings with nanotechnology, then you can push the performance boundaries to much higher levels,’ he said.

The Intelglazing glass technology has two parts. The first is a microscopically thin layer of nanostructured glass shaped like tiny hair combs which are less than a micrometre (or one thousandth of a millimetre) in height. These ‘nanocomb’ structures overlap with each other and scatter sunlight, reducing the glare that enters through the window.

The second part is where the windows become energy efficient. Here the researchers are experimenting with a material called vanadium oxide, which can attach to the nanocombs. This chemical compound is thermochromic - meaning it can change its colour depending on the temperature. For example, hot days will cause the vanadium oxide to change its structure, causing it to darken and reject most of the warming near-infrared sunlight, whereas on cold days it will lighten and let most of it in.

Manufacturers can apply this layer directly to new windows as a layer of glazing, or DIY retrofitters can apply it to old windows as an adhesive layer of polymer film. An added benefit of this, says Prof. Papakonstantinou, is that manufacturers can customise windows or films with these layers to switch on at a different temperature point.

‘You can change the chemical composition of vanadium dioxide in a way that it can switch at a higher or lower temperature,’ he said. ‘So you have some quite good control.’ For example, windows in southern Spain could be customised to block out sunlight at a lower temperature to prevent buildings warming up during the day. Likewise, a building in northern Sweden will want to get as much warmth from the sun as possible, so their windows could only start blocking out sunlight at a higher temperature.

“Renovation of buildings is carried out all the time … It's important that when we do this, that we do it in the most energy efficient way so we don't replace an old window with a poorly performing new window.”

Professor Per Heiselberg, Aalborg University, Denmark

Hydrophobic

Windows with this nanocomb-vanadium oxide layer are also hydrophobic (water repellent) - rain quickly runs off the glass and picks up any dirt along the way, making the windows self-cleaning. This makes the windows more efficient when they are used in skyscrapers, for example.

The project’s aim is for their windows to reduce people’s energy use by 25% by blocking or allowing sunlight when needed, and be more than 50% more efficient compared to existing window tech on the market, since no extra energy is needed to activate the vanadium oxide.

In fact, window retrofitting technology has changed drastically since the project started in 2016, says Prof. Papakonstantinou. He says when he first discussed the project in the mid-2010s, nanotechnology in windows was unheard of but now ‘the field has started booming.’

Professor Per Heiselberg of Aalborg University in Denmark says that discussions on retrofitting buildings has been around for decades, though the environmental element has only recently been a priority.

‘It has been the topic for 40 years, but of course the argumentation has changed,’ he said. Back in the 1970s he says that people were saving energy so as not to be dependent on countries in the Middle East who had an oligopoly on oil supply. ‘Now the focus is to reduce your carbon emissions and avoid greenhouse gases.’

Prof Heiselberg’s ReCO2ST project is looking at ways to retrofit every surface that envelops a building to be more cost efficient and environmentally friendly.

Ventilation systems

A central feature of the project is using smart window technology to provide ventilation for retrofitted buildings, where installing modern ventilation systems like air conditioners is difficult or expensive. ‘(A window is usually the) weak part of the envelope because it's typically leaky and not so well insulated,’ he said. ‘On the other hand, it's also where we get some heat from the sun into our buildings.

The main idea is to use smart windows to both provide better shade from the sun and supply fresh air into a building. This is especially useful for older buildings retrofitted with modern windows. Since these modern windows are more airtight they can cause moisture and emissions to build up in the building, which might require another costly retrofit of the building’s ventilation system.

‘It can be difficult - especially in old buildings - to find space for pipes and ventilation systems to supply fresh air to the spaces – and all spaces usually have access to the outside through a window,’ said Prof. Heiselberg.

‘It would be more cost effective if, instead of installing both a new window and a ventilation system, we use the window for supply of fresh air, and then we use the chimneys or the stacks you have in old buildings for the exhaust of the air.’

Their smart window idea is based on research done in a previous EU project called CLIMAWIN. In their triple-glazed window frame there is a small gap (around 5mm wide) at the bottom level on the outside. This gap allows air to pass in between the window’s glazing layers and be warmed by sunlight. It then enters the room through a small valve at the top of the window facing inside the building.  

The result is a preheated draft of fresh air through the window that can then leave the building through another ventilation exhaust.

At the moment the team is experimenting with different materials that can store latent heat in the windows during the day and then release it at night, says Prof. Heiselberg. ‘During a time where we have sunshine, we can collect and store it,’ he said. ‘And then we also have the possibility to preheat air in periods where the sun is not shining.’

This material could also be shaded from the sun during the summer so that instead of storing latent heat, it instead cools the air passing through it. Another idea being developed is fitting the windows with sensors to know the optimal time to store and release heat, and adding miniature fans to control the direction of the airflow.

‘Renovation of buildings is carried out all the time because components have a certain lifetime and need to be replaced,’ said Prof. Heiselberg. ‘It's important that when we do this, that we do it in the most energy efficient way so we don't replace an old window with a poorly performing new window.’

The research in this article was funded by the EU.

This post Smart windows could reduce the need for energy-hungry air conditioners was originally published on Horizon: the EU Research & Innovation magazine | European Commission.

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Read Also

Luminescent solar concentrators in windows

An energy-saving ‘liquid window’

[chaitalimah]

Smart Window Market to Touch USD 9083.7 Million at 17.8% CAGR by 2025 | In COVID-19 Pandemic Market Eyeing Remarkable Growth due to Growing Adoption in Healthcare Sector

Market Research Future (MRFR) reports that Smart Window market is likely to touch an valuation of USD 9083.7 Million by 2023 at a whopping 17.8% CAGR between 2019- 2025. The market was valued at USD 2,870.6 Million in 2017.

Smart windows or switchable glass, simply put, is a glass whose light transmission properties that can be altered when heat, light, or voltage is applied. The lens generally changes from translucent to transparent by blocking some wavelengths of light to letting light pass through. 

Key Players

Prominent contenders profiled in the global smart window market report include Innovative Glass Corporation (US), Nippon Sheet Glass Co., Ltd (Japan), Hitachi Chemical Co., Ltd (Japan), AGC, Inc. (Japan), ChromoGenics AB (Sweden), E-Chromic Technologies, Inc. (US), Pleotint, LLC (US), Merck KGaA (Germany), Gentex Corporation (US), Kinestral Technologies, Inc. (US), LTI Smart Glass, Inc. (US), PPG Industries, Inc. (US), RavenWindow (US), and Saint-Gobain Group (France). 

Avail Free Sample Smart Window Market@ https://www.openpr.com/news/2218483/smart-window-market-to-touch-usd-9083-7-million-at-17-8-cagr

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[nuadox]

An energy-saving 'liquid window'

- By Nanyang Technological University -

Scientists at the Nanyang Technological University, Singapore (NTU Singapore) have developed a liquid window panel that can simultaneously block the sun to regulate solar transmission, while trapping thermal heat that can be released through the day and night, helping to reduce energy consumption in buildings.

The NTU researchers developed their 'smart window' by placing hydrogel-based liquid within glass panels and found that it can reduce up to 45 per cent of heating, ventilation, and air-conditioning energy consumption in buildings in simulations, compared to traditional glass windows. It is also around 30 per cent more energy efficient than commercially available low-emissivity (energy-efficient) glass, while being cheaper to make.

The 'smart window' is the first reported instance in a scientific journal of energy-saving smart windows made using liquid, and supports the NTU Smart Campus vision which aims to develop technologically advanced solutions for a sustainable future.

Windows are a key component in a building's design, but they are also the least energy-efficient part. Due to the ease with which heat can transfer through glass, windows have a significant impact on heating and cooling costs of a building. According to a 2009 report by the United Nations, buildings account for 40 per cent of global energy usage, and windows are responsible for half of that energy consumption.

Conventional energy-saving low-emissivity windows are made with expensive coatings that cut down infrared light passing into or out of a building, thus helping to reduce demand for heating and cooling. However, they do not regulate visible light, which is a major component of sunlight that causes buildings to heat up.

To develop a window to overcome these limitations, the NTU researchers turned to water, which absorbs a high amount of heat before it begins to get hot - a phenomenon known as high specific heat capacity.

Image: The liquid mixture used to create the smart window is made from micro-hydrogel, water and a stabiliser. Credit: NTU Singapore.

They created a mixture of micro-hydrogel, water and a stabiliser, and found through experiments and simulations that it can effectively reduce energy consumption in a variety of climates, due to its ability to respond to a change in temperature. Thanks to the hydrogel, the liquid mixture turns opaque when exposed to heat, thus blocking sunlight, and, when cool, returns to its original 'clear' state.

'Liquid window' most suitable for office buildings

At the same time, the high heat capacity of water allows a large amount of thermal energy to be stored instead of getting transferred through the glass and into the building during the hot daytime. The heat will then be gradually cooled and released at night.

Dr Long Yi, lead author of the research study published in the journal Joule, and Senior Lecturer at the School of Materials Science & Engineering said, "Our innovation combines the unique properties of both types of materials - hydrogel and water. By using a hydrogel-based liquid we simplify the fabrication process to pouring the mixture between two glass panels. This gives the window a unique advantage of high uniformity, which means the window can be created in any shape and size."

As a result of these features, the NTU research team believes that their innovation is best suited for use in office buildings, where operating hours are mostly in the day.

As a proof of concept, the scientists conducted outdoor tests in hot (Singapore, Guangzhou) and cold (Beijing) environments.

The Singapore test revealed that the smart liquid window had a lower temperature (50°C) during the hottest time of the day (noon) compared to a normal glass window (84°C). The Beijing tests showed that the room using the smart liquid window consumed 11 per cent less energy to maintain the same temperature compared to the room with a normal glass window.

Smart window shifts electricity load peak, blocks noise

The scientists also measured when the highest value of stored thermal energy of the day occurred.

This 'temperature peak' in the normal glass window was 12pm, and in the smart liquid window was shifted to 2 pm. If this temperature peak shift is translated to a shift in the time that a building needs to draw on electrical power to cool or warm the building, it should result in lower energy tariff charges for users.

Image: The smart window turns opaque when exposed to heat, thus blocking sunlight, and, when cool, returns to its original 'clear' state. Credit: NTU Singapore.

Simulations using an actual building model and weather data of four cities (Shanghai, Las Vegas, Riyadh, and Singapore) showed that the smart liquid window had the best energy-saving performance in all four cities when compared to regular glass windows and low emissivity windows.

Soundproof tests also suggested that the smart liquid window reduces noise 15 per cent more effectively than double-glazed windows.

First author of the study Wang Shancheng, who is Project Officer at the School of Materials Science & Engineering said, "Sound-blocking double glazed windows are made with two pieces of glass which are separated by an air gap. Our window is designed similarly, but in place of air, we fill the gap with the hydrogel-based liquid, which increases the sound insulation between the glass panels, thereby offering additional benefit not commonly found in current energy-saving windows."

The other first author, Dr Zhou Yang was a PhD student in NTU and is currently an Associate Professor at China University of Petroleum-Beijing (CUPB).

Providing an independent view, Professor Ronggui Yang, of the Huazhong University of Science and Technology, China, a recipient of the 2020 Nukiyama Memorial Award in Thermal Science and Engineering and an expert in thermal and energy systems said, "This is the first instance of a hydrogel-based liquid smart window, and it takes us far from a conventional glass design. The disruptive innovation leads to solar regulation and heat storage, which together render outstanding energy-saving performance."

The research team is now looking to collaborate with industry partners to commercialise the smart window.

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Source: Nanyang Technological University

Full study: “Liquid Thermo-Responsive Smart Window Derived from Hydrogel”, Joule.

https://doi.org/10.1016/j.joule.2020.09.001

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Proof of concept: ‘Smart brick’ could be used for energy storage

Researchers improve white paints that keep buildings cool

A novel hybrid solar energy converter

[buycarsfromjapan-blog]

Ford Prototypes Smart Window That Lets Blind Passengers “Feel the View”

[reportsandmarkets]

Smart Window Materials Market Research Report 2017

Smart Window Materials Market Research Report 2017

Smart Window Materials Market     Smart Window Materials market is valued at USD XX million in 2016 and is expected to reach USD XX million by the end of 2022, growing at a CAGR of XX% between 2016 and 2022.   For Full Report click on @ https://www.reportsandmarkets.com/reports/global-smart-window-materials-market-research-report-2017-1642115       Geographically, this report is segmented into…

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