Waitrose, the UK supermarket chain, is to launch a trial of an “invisible door” designed to reduce avoidable energy loss at store entrances in its Berkhamsted shop later this year. These use the principles of aerodynamics to guide cold air across an application more efficiently. Research suggests that a widescale rollout of the AirDoor could save retailers in the country an annual £1.5bn ($1.9bn) in energy costs. The idea behind the door – which has been developed by British company InMotion and US firm iWalk – is simple.
Waitrose, the UK supermarket chain, is to launch a trial of an “invisible door” designed to reduce avoidable energy loss at store entrances in its Berkhamsted shop later this year. Research suggests that a widescale rollout of the AirDoor could save retailers in the country an annual £1.5bn ($1.9bn) in energy costs. The idea behind the door – which has been developed by British company InMotion and US firm iWalk – is simple.