A coating is applied to the glass that responds to changing external temperatures and can switch between heating and cooling as needed, potentially saving energy.
The glass has no electrical components and works by exploiting the different wavelengths of light responsible for heating and cooling.
During summer, the glass suppresses solar heating (near infrared light), while boosting radiative cooling (long-wave infrared) - a natural phenomenon where heat emits through surfaces towards the cold universe - to cool the room. In the winter, it does the opposite to warm up the room.
In lab tests using an infrared camera to visualise results, the glass allowed a controlled amount of heat to emit in various conditions (room temperature – above 70°C), proving its ability to react dynamically to changing weather conditions.
Windows are typically the least energy-efficient part of a building’s construction. Window-associated energy consumption (heating and cooling...