At first glance, the 32 panels on top of a grocery store in Stockton, Calfornia look like solar panels. But this installation is designed not to harness the sun, but to defy it. Coated with a film technology that reflects radiation from the sun, the panels – and whatever lies beneath them – can drop to 15F (8C) below the ambient temperature, even in the middle of the day, with no electricity required. It is “a fundamentally different way of achieving cooling and harnessing an untapped renewable resource”, said George Keiser, chief operating officer of SkyCool, the company behind the panels. “We’re using the sky as this enormous heat sink,” said Keiser, sending excess heat from the surface of the Earth, through the atmosphere and into outer space.
Guardian 3rd Sept 2021 read more »