Tag: hydtrogen

German boffins make artificial sunlight

German boffins have turned on what is being billed as “the world’s largest artificial sun,” a device they hope will help shed light on innovative ways of making climate-friendly fuels.

The giant honeycomb-like setup is made of 149 spotlights, dubbed Synlight, in Juelich, about 30 kilometers (19 miles) west of Cologne, and uses xenon short-arc lamps normally found in cinemas to simulate natural sunlight that is often in short supply in Germany at this time of year.

By focusing the entire array on a single 20-by-20 centimeter (8×8 inch) spot, scientists from the German Aerospace Centre, or DLR , will be able to produce the equivalent of 10,000 times the amount of solar radiation that would normally shine on the same surface.

This creates temperatures of up to 3,000 degrees Celsius (5,432 Fahrenheit) which could be the key to making hydrogen.

Bernhard Hoffschmidt, the director of DLR’s Institute for Solar Research told the press that hydrogen will be the fuel of the future because it produces no carbon emissions when burned, meaning it doesn’t add to global warming.

But while hydrogen is the most common element in the universe it is rare on Earth. One way to manufacture it is to split water into its two components — the other being oxygen — using electricity in a process called electrolysis.

Researchers hope to bypass the electricity stage by tapping into the enormous amount of energy that reaches Earth in the form of light from the sun.

Hoffschmidt said the dazzling display is designed to take experiments done in smaller labs to the next level, adding that once researchers have mastered hydrogen-making techniques with Synlight’s 350-kilowatt array, the process could be scaled up ten-fold on the way to reaching a level fit for industry. Experts say this could take about a decade, if there is sufficient industry support.

The goal is to eventually use actual sunlight rather than the artificial light produced at the Juelich experiment, which cost $3.8 million to build and requires as much electricity in four hours as a four-person household would use in a year.