By Adam Vaughan
Buildings with windows filled with water rather than gas could save energy in most of the world, according to researchers backing the new technology.
Matyas Gutai at Loughborough University, UK, believes the traditional approach to windows has gone as far as it can to aid increasingly ambitious climate goals. Triple-glazed windows typically use a layer of argon gas between panes to stop heat transferring in or out.
Instead, Gutai and Abolfazl Kheybari at the University of Kaiserslautern, Germany, turned to water for its ability to absorb the heat from …