Road Energy Systems from Scotland's Invisible Heating



We’ve had this story on hold for a few days, waiting for the rain to clear in Scotland. Invisible Heating Systems were planning to post pics of their Road Energy System being laid down in the carpark of their new offices, but had to postpone the work. Now it has gone in. In essence it is the reverse of under-floor heating. Instead of pumping hot water into a floor, the floor (or road, to be precise) heats the water. Special pipes are laid on top of a grid frame, under the tarmac or asphalt, or whatever it is called in your neck of the woods. Sunlight is absorbed by the wide, black road surface, which boosts the temperature of the water just beneath. This turns roads into massive solar hot water heaters. The idea originated in the Netherlands, where it has been used in flyovers and airports. In Scotland, the hope is that the system will also reduce the use of salt in de-icing roads. In summer cold can be feed through the pipes to cool roads and reduce their level of upkeep. (Not to be confused with the solar carpark that Patagonia installed. )::Invisible Heating Systems, via BBC Scotland