Revolving office door can be turned into a kinetic energy. Fluxxlab is trying to create a revolution door that take advantage of this wasted kinetic energy. The Revolution Door technology can be used with any new or existing revolving doors. At its core, it contains three parts – a redesigned central core replacing that of any existing or new revolving door, a mechanical/electrical system that harnesses human energy and redistributes electricity to an output, and an output device that maps the harnessed energy. The revolving doors in large office buildings are always in use at any given moment during the day and by capturing that kinetic energy this project can provide free electricity to the installation site.
Source : Gizmodo