International. In France they developed a useful system to keep food fresh during deliveries in the city center. It combines an electric scooter with a cold box equipped with an autonomous, silent and ecological sorption system.
The scooter is mounted on three wheels and has a pendulum movement: when the vehicle is tilted in a curve, the box remains straight and stable.
For now, the box is only suitable for refrigerated / preservation products above 0 ° C, but a version adapted to frozen products is being developed. Cold is produced by a chemical reaction between ammonia, salts and graphite.
The system uses three elements: a reactor containing salts and graphite, an evaporator containing liquid ammonia, and a communication valve between the two tanks. The system produces cold (or heat), then regenerates and stores energy. The circuit is totally airtight and therefore safe.
The refrigerated box, called Coolcase and developed by the company Coldway Technologies, has a capacity of 96 liters and a range of 12 hours. The scooter has a range of 50 kilometers. Therefore, this type of solution is especially suitable for home catering.
