The Bean Machine is a car that is powered entirely by coffee chaf.
Coffee chaf is the waste product left over from coffee production. It gets turned into pellets, heated in a charcoal fire and broken down into carbon monoxide and hydrogen. The gas is then cooled and filtered before hydrogen is combusted to drive the engine. This process is called gasification.
The Co-operative Food is hoping to make it into the 2013 Guinness Book of Records, as the car travels 1600 miles around the UK during Fairtrade Fortnight.
The gasifier runs at a temperature of 900˚C and the gas coming off is around 300˚C. The heat has to be lowered to 20˚C before it gets to the engine.
In the Second World War, there were over 100,000 vehicles in the UK that ran on gasification, including cars, buses and delivery vehicles and at the beginning of the 20th century, there were over 900,000 vehicles running on gasifiers across the world.
Gasification is used today in power stations in the UK, making gas from household waste.
In 2011, the world produced 7.9 million tons of coffee - this would fuel the Coffee Car for 31 billion miles!
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