Martin
8th January 2011, 15:36
Link to the news (http://de.babelfish.yahoo.com/translate_url?doit=done&tt=url&intl=1&fr=bf-home&trurl=http%3A%2F%2Falles-schallundrauch.blogspot.com%2F2011%2F01%2Fsolar-reaktor-produziert-benzin-mit.html&lp=de_en&btnTrUrl=%C3%9Cbersetzen)
A research team around Aldo stone field, professor for renewable sources of energy at the ETH Zurich and director/conductor of the laboratory for solar technology at Paul Scherrer Institut (psi), is to be developed succeeded a solar reactor, that a combustible gas produced.
The picture shows professor Steinfeld and its graduate student Philipp Furler, how they pursue an experiment with their solar thermochemical reactor to the fuel production from water and CO2 at the high river solar simulator of the ETH Zurich.
With a radically new process water and carbon dioxide converted into a mixture of hydrogen (H2) and Carbon monoxide (CO), which are called “Syngas” and a preliminary stage of gasoline, kerosene and other liquid fuels represent. As an energy supplier for the process concentrated solar radiation is used. Together with colleagues in Pasadena, the USA, the ETH and psi researcher the solar reactor developed California institutes OF Technology (Caltech) and published the experimental results in the current expenditure of “Science”.
Thus the problem could be solved, as stores one the solar power, converts it into a fuel and transports it to the consumer. In addition this new fuel would be inexhaustibly, there sun, water and CO2 is for an unlimited period present. And the existing combustion engines and engines would not have to be changed over, gasoline from oil can smoothly be replaced.
The underlying idea consists of splitting water and CO2 up thermal chemically with the help of a two-stage metallic oxide redox cyclic process. In a first, energy-intensive step cerium oxide is reduced by concentrated solar radiation at a temperature of 1500°C. The material delivers oxygen atoms from the structure. In the second step one lets the reduced cerium oxide react with for instance 900°C with water vapour and CO2; the water and CO2-Moleküle are broken open and the freed oxygen atoms into the material structure it is integrated in such a way that the cerium oxide is again in the output form and can the cyclic process again be started. Pure Syngas from H2 and CO remains remaining.
“It is thermodynamically seen attractive to operate the solarchemical process at high temperatures and to use the entire solar spectrum, around with high reaction rates and a high energy conversion efficiency solar fuels to manufacture”, explains stone field.
The reactor configuration consists of a cavity receiver, which contains a porous, monolithic cerium oxide cylinder. Concentrated solar radiation enters by a Blendenöffnung sealed with a transparent quartz glass and of the cerium oxide within the reactor is directly and efficiently absorbed. This material is cyclically heated up and cooled under Beigabe of a suitable gas, which releases the production of the “Syngas”.
At present stone field and its group are to optimize the solar reactor in such a way that it can be used also in large yardstick − in the megawatt range − in solar tower plants. Such plants are already commercial to the generation of current in use. Stone field remains however conservative with its estimate, to when its solar reactor could be taken technology in practice in enterprise:
“There is necessary still large efforts, but 2020 we should be so far that the first industrial solar fuel plant can go into enterprise and make a central contribution to the lasting energy production of the future”.
Hier weiterlesen: All sound and smoke: Solar reactor produces gasoline with sunlight http://alles-schallundrauch.blogspot.com/2011/01/solar-reaktor-produziert-benzin-mit.html#ixzz1ASUY7eO6
SOLAR THERMOCHEMICAL PROCESS TECHNOLOGY (http://www.pre.ethz.ch/publications/0_pdf/books/Solar_Thermochemical_Process_Technology.pdf)
Looking good, doesn't it?
Martin
A research team around Aldo stone field, professor for renewable sources of energy at the ETH Zurich and director/conductor of the laboratory for solar technology at Paul Scherrer Institut (psi), is to be developed succeeded a solar reactor, that a combustible gas produced.
The picture shows professor Steinfeld and its graduate student Philipp Furler, how they pursue an experiment with their solar thermochemical reactor to the fuel production from water and CO2 at the high river solar simulator of the ETH Zurich.
With a radically new process water and carbon dioxide converted into a mixture of hydrogen (H2) and Carbon monoxide (CO), which are called “Syngas” and a preliminary stage of gasoline, kerosene and other liquid fuels represent. As an energy supplier for the process concentrated solar radiation is used. Together with colleagues in Pasadena, the USA, the ETH and psi researcher the solar reactor developed California institutes OF Technology (Caltech) and published the experimental results in the current expenditure of “Science”.
Thus the problem could be solved, as stores one the solar power, converts it into a fuel and transports it to the consumer. In addition this new fuel would be inexhaustibly, there sun, water and CO2 is for an unlimited period present. And the existing combustion engines and engines would not have to be changed over, gasoline from oil can smoothly be replaced.
The underlying idea consists of splitting water and CO2 up thermal chemically with the help of a two-stage metallic oxide redox cyclic process. In a first, energy-intensive step cerium oxide is reduced by concentrated solar radiation at a temperature of 1500°C. The material delivers oxygen atoms from the structure. In the second step one lets the reduced cerium oxide react with for instance 900°C with water vapour and CO2; the water and CO2-Moleküle are broken open and the freed oxygen atoms into the material structure it is integrated in such a way that the cerium oxide is again in the output form and can the cyclic process again be started. Pure Syngas from H2 and CO remains remaining.
“It is thermodynamically seen attractive to operate the solarchemical process at high temperatures and to use the entire solar spectrum, around with high reaction rates and a high energy conversion efficiency solar fuels to manufacture”, explains stone field.
The reactor configuration consists of a cavity receiver, which contains a porous, monolithic cerium oxide cylinder. Concentrated solar radiation enters by a Blendenöffnung sealed with a transparent quartz glass and of the cerium oxide within the reactor is directly and efficiently absorbed. This material is cyclically heated up and cooled under Beigabe of a suitable gas, which releases the production of the “Syngas”.
At present stone field and its group are to optimize the solar reactor in such a way that it can be used also in large yardstick − in the megawatt range − in solar tower plants. Such plants are already commercial to the generation of current in use. Stone field remains however conservative with its estimate, to when its solar reactor could be taken technology in practice in enterprise:
“There is necessary still large efforts, but 2020 we should be so far that the first industrial solar fuel plant can go into enterprise and make a central contribution to the lasting energy production of the future”.
Hier weiterlesen: All sound and smoke: Solar reactor produces gasoline with sunlight http://alles-schallundrauch.blogspot.com/2011/01/solar-reaktor-produziert-benzin-mit.html#ixzz1ASUY7eO6
SOLAR THERMOCHEMICAL PROCESS TECHNOLOGY (http://www.pre.ethz.ch/publications/0_pdf/books/Solar_Thermochemical_Process_Technology.pdf)
Looking good, doesn't it?
Martin