Forschungszentrum J├╝lich achieved a world record again with fuel cells

Scientists at the Research Center J├╝lich, Germany set a new record for a promising energy technology: Two high-temperature fuel cell stack (stacks) to reach an operating life of 15,000 hours.

Feul cell

Feul cell

Hot candidates for future use in buildings, power plants and vehicles are high-temperature fuel cells with solid electrolyte (Solid oxide fuel cells, SOFCs). They convert chemical energy directly and efficiently into electrical energy – thus they save resources and avoid emissions. Supported by project funds from the EU, were at the Forschungszentrum J├╝lich “stacks” of the Generation 3 up. When in J├╝lich pursued so-called planar technology in these stacks the individual cells stacked to increase voltage to achieve.

Scientists at the Institute for Energy Research (IEF) and the Central Technology Division (ZAT) now have two such stacks, each successfully operated 15,000 hours.Dr. Robert Steinberger-Wilckens says “And they delivered on average a benefit of 0.4 watts per square centimeter, about twice what is currently in commercial systems”, Head of the project “Fuel Cell” at the Research Center. For use in vehicles are already 5,000 to 10,000 hours for a stationary power supply, however, operating times in excess of 40,000 hours is required. Steinberger-Wilckens says “We are the aim of such operating times to realize, once again a good to bit closer”.

“Furthermore, we have the cross-country skiers stacks with relatively low 700 ┬░ C. – this age the cells more slowly,” said Steinberger. The aging or degradation of a fuel cell acts as a gradual loss of power off – similar to batteries. It is worth noting at the J├╝lich stacks that the degradation of the cells on the run so far reached only ten percent. Commonly, the living end of a stack at 20 percent power loss value.

If so, the stacks undisturbed still continue to operate, so in theory they have the potential to create about 30,000 hours – a stack of the type previously unattainable held operating time. Thus they would be for about four years of uninterrupted operation qualifies, if intermittent operation, eg in building heating, the equivalent of a lifetime even five to ten years.

Source: Forschungszentrum J├╝lich

Posted under Fuel Cells, Hydrogen Economy

This post was written by admin on May 18, 2009


Shell Eco-marathon Europe 2009 Results

Driving 3000 kilometres per litre seems an unlikely distance, but that is the standard of fuel economy that the teams competing in the Shell Eco-marathon project will be trying to match. DTU Dynamo won the Shell Eco-marathon Europe.

Prototype Fuel Cell Eco-marathon Europe 2009 Results

Source: Shell Eco-marathon Europe 2009

Posted under Fuel Cells, Hydrogen Cars

This post was written by admin on May 11, 2009

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Submarines: Ideal fuel cell vehicle

Fuel cells apparently make a good submarine hard to find. While fuel cell automobiles promise reduced emissions on land, the high seas have long enjoyed a virtual amnesty from air-emission regulations.

Emission-free on the Alster: Since August 2008, Hamburg-Visitors to the “FCS Alsterwasser” ecologically correct on the central waters of the Hanseatic City of sail. Makes it possible to combine electric and fuel cell: The energy comes from a hydrogen tank, up to 50 kilograms may be – that’s enough for four days. From the hydrogen produces fuel cell then electrical energy for the motor.

The company’s latest line of U212 and U214 Class non-nuclear submarines have been developed using a silent operating fuel cell plant that runs on nine 34-kilowatt Siemens polymer electrolyte membrane (PEM) hydrogen fuel cells. An air-independent fuel cell propulsion (AIP) system provides an extreme increase in underwater endurance, increased diving depth and overall efficiency.

The development will push the Hydrogen Bus Alliance. Partners of the merger include the cities of Berlin, Hamburg, London and Madrid. Between 2009 and 2011 counts Melczer because of the twinning with a demand of more than 50 buses, from 2011 to 2013 should be 100 and in the years 2013 to 2015 will be 500 buses.

The U212 combines a conventional diesel generator with a lead acid battery and an air-independent propulsion (AIP) system for silent slow cruising, and a fuel cell equipped with oxygen and hydrogen storage. The system consists of nine PEM (polymer electrolyte membrane) fuel cells, providing between 30 and 50kW each.

Fuel cell hydrogen Submarine

Fuel cell hydrogen Submarine

The U214 submarine, still in development, has a displacement of 1,700 tonnes, is 65 metres long and is manned by a crew of 27. The propulsion is again provided by a Siemens Permasyn engine which draws its power supply either from the fuel cells or from batteries which are fed by a diesel generator. Performance of the AIP system has been increased with two Siemens PEM fuel cells, which produce 120kW per module and will give the submarine an underwater endurance of two weeks.

Fuel cell hydrogen Submarine

Fuel cell hydrogen Submarine

Posted under Fuel Cells

This post was written by admin on May 6, 2009

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