DLR succeed solar hydrogen production


Scientists at the German Aerospace Center (DLR) to produce hydrogen in a 100-kilowatt pilot plant by solar energy and regenerative CO2-free

Hydrogen can be used as fuel in the future a significant contribution to the energy industry afford. Scientists at the German Aerospace Center (DLR), it is now the first time succeeded in this important energy source in a 100-kilowatt solar pilot plant through regenerative CO2 and thus free to produce.

Solar energy is by far the most widely available energy resource on earth. Hydrogen is again with its high energy density is an excellent energy source, also arise during its combustion only water and heat. Already more than six years deals the Solar Research of DLR-Institute for Technical Thermodynamics in the framework of EU projects Hydrosol I and II with the development of innovative reactors for solar, thermo-chemical water splitting. With these reactors is water by solar energy – without the detour via the electricity – into hydrogen and oxygen divided. Now could so far in the 10-kilowatt power range of research results shown successfully on a 100-kilowatt pilot plant to be transferred.

The Spanish on the Plataforma Solar de Almeria (PSA) plant is installed with a novel solar reactor, and it was only in the spring of this year officially inaugurated. With their size and automation, it is already an important prototype for future industrial plants dar. DLR developed the reactor technology for the facility. The reactor is concentrated solar radiation at 800 to 1200 degrees Celsius control. At these temperatures will then won hydrogen from water.

“Solar Hydrogen is CO2-free energy

Regenerative production of hydrogen from solar energy and the associated storage of solar energy into chemical energy that are of great technical and economic interest to the energy industry. After a thorough qualification of the solar thermal tower plant in the summer of this year, the plant recently for the first time with Solarabsorbern equipped, by a special coating are able to divide water and thus CO2-free hydrogen to produce.

The path to commercial application

The successful solar hydrogen production represents a significant milestone in the ongoing Hydrosol II project which, given the already initially achieved the hydrogen yields far exceeded expectations. In the next few months, the tests for hydrogen production on the so-called SSPS Tower (Small Solar Power System) of the Plataforma Solar de Almeria continued and intensified. The focus is primarily the optimization of operating conditions and the efficiency of the plant. Further tests with alternatively coated Solarabsorbern should then pave the way to the most suitable materials show.

The design of the 100-kilowatt pilot plant based on a modular concept. It is a further upscaling of this technology to the megawatt-scale readily available. This can be achieved by multiplying the existing reactor units and connecting Heliostat fields (mirror-burning fields) of appropriate size, as they already have, inter alia, in Spain to generate electricity commercially used to happen.

The hydrogen yield of the DLR is proceeding with thirty percent in the pilot plant considerably, according to DLR will in future installations “up to 80 percent” yield possible.

The project will Hydrosol by an international consortium with participants from Germany, Spain, Greece, Denmark and Britain carried out. The research and development work on Hydrosol I have been because of the potential far-reaching consequences, including the Descartes Research Prize of the European Union and the Technical Achievement Award from the International Partnership for the Hydrogen Economy excellent.

The DLR Institute for Technical Thermodynamics in solar research is one of the world’s leading institutions in the field of concentrating solar systems. The aim is, together with industrial partners concentrating solar systems for heating, electricity and fuel production for sustainable energy development. Besides testing facilities and laboratories in Cologne and Stuttgart, the team of researchers by a permanent delegation on the spot access to the biggest European test center for concentrating solar technologies, the Plataforma Solar de Almeria in Spain.

Source: DLR

Posted under Hydrogen Economy

This post was written by admin on November 29, 2008


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