The winner of this year’s James Dyson Award, Edward Linnacre’s Airdrop is a device that extracts water from air for use as in irrigation. If this sounds, like a Tatooine moisture farm, it should. However, unlike Uncle Owen’s GX-8 water vaporator, the Airdrop doesn’t use refrigerant, but rather the temperature differential from air to soil.
The Airdrop consists of a small reservoir buried about two meters in soil. Rising out of the tank and up to the surface is a cylinder containing a copper coil filled with copper ball bearings used in home distilleries. The copper tubing continues up to a turbine like those used on attic vents, but with the vanes turned around so that air is driven into the tubing instead of out of it. Also in cylinder is a submersible pump that transfers water from the tank to a drip irrigation line. The pump is controlled by an embedded microcontroller and solar powered. In times of little wind, the turbine can be powered by an electric motor.