In the new James Bond film Quantum of Solace, a villain tries to take control of fresh water around the world. It turns out that is a very real threat.

Don’t worry though, back in March 2008, Dean Kamen, the founder of DEKA research, who invented the Segway, announced his new invention he calls Slingshot (See video below). The Slingshot uses no filters, but rather purifies water using vapor compression distillation. Kamen says he company plans to put the machines into production, and if they are used around the world they can eliminate 50% of human disease which is caused by water born pathogens. The Slingshot will cost between $1,000 to $2,000.

• It is designed to supply a village with 1,000 liters/day of clean water.
• You can use any water source, ocean, puddle, chemical waste site, hexavalent chrome, arsenic, poison, 50 gallon drum of urine.
• Vapor compression distillation is not new. Doing it in such an incredibly efficient way such that it takes only 2 percent of the power of convention distillers is new.
• The are no filters to replace, no charcoal, no anything disposable (just distillation).
• The Slingshot (as its called) can use half the waste heat (450 watts) from a sterling engine electrical generator (prototype also being designed by Kamen’s company) to boil its water.
• The heat put into the water is recovered with a "counter-flow heat exchanger" and recycled to heat the next batch of water (that is part of the novel bit).
• Slingshot will be less then 60 lbs.
• The prototype slingshot was hand-built for $100K. The goal is to get production units down to $1,000 to $2,000.
• The sterling engine, used as an electrical generator, can produce about 200 watts of power (it will never be more then 20 percent efficient) and 800 watts of waste heat (the waste heat that slingshot uses).
• Later sources say the sterling engine can generate 1 kilowatt or enough power for 70 high-efficiency light bulbs.
• The sterling engine can run on anything that burns, propane or even cow dung.
• The slingshot is a David and Goliath reference aimed at putting water and power back in the hands of the individuals.

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