Revolving door generates its own power


December 11, 2008

The energy generating revolving door at the Driebergen-Zeist railway station

The energy generating revolving door at the Driebergen-Zeist railway station

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December 12, 2008 In a clever example of harnessing the power of human movement, Netherlands based door manufacturer Royal Boon Edam has developed an energy generating revolving door for the Driebergen-Zeist railway station which generates energy with every person passing through the door.

The door is equipped with a special generator that controls the rotating speed of the door to make it safer. A set of super capacitors stores the generated energy as a buffer and provides a consistent supply for the low energy LED lights in the ceiling. In case the LED lights have used-up all the stored energy, the control unit will switch to the alternative mains supply of the building to ensure the door is illuminated even when the passenger flow is minimal.

LED scales inside the door indicate the amount of energy that is generated – the slower someone passes through the door the less energy is generated. Another LED indicator at the control unit shows when the illumination of the revolving door is powered by human energy, or by the mains supply. The total amount of energy that is generated by the revolving door is accumulated and shown on a large display inside the building.

You might expect the amount of energy saved to me minimal but the company calculated that the door would provide an energy saving of around 4600 kWh per year – a considerable saving compared to a conventional entrance.

Royal Boon Edam via Inhabitat.

About the Author
Darren Quick Darren's love of technology started in primary school with a Nintendo Game & Watch Donkey Kong (still functioning) and a Commodore VIC 20 computer (not still functioning). In high school he upgraded to a 286 PC, and he's been following Moore's law ever since. This love of technology continued through a number of university courses and crappy jobs until 2008, when his interests found a home at Gizmag. All articles by Darren Quick
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