Time and again, the public called astronomical prices for hydrogen, for example in the article 'fuel from the reactor bacteria' (SZ, 25 1), about 23 DM for a lot of hydrogen, which corresponds to the energy content of a liter of petrol. The hydrogen is obtained by means of solar energy from water. price Incorrect calculations In our view, the above costs are based on calculations with a small series of photovoltaic modules, custom made of electrolyzers and operation of research facilities. But this is einunlauterer benchmark: No one would buy such a car, which consists of specially made parts - then it could cost that is easily a million DM. But no sooner has invested in the market introduction of renewable energy sources such as wind energy, it becomes a self-perpetuating and Germany to become the second largest user and a major exporter. You can apply to the case say the other renewable energy sources: 'We have not even seriously tried . Hydrogen is cheap by-product in the chemical industry produced gaseous hydrogen partially as a by-product that is no longer used for other chemical production processes. This hydrogen (about one billion m3 per year), which is now either recycled internally thermally or simply vented into the environment would, at a price from 0.44 to 0.72 DM per liter of gasoline equivalent energy for applications such as coupled electricity and heat generation using fuel cells available. For use in the automotive market, he would have to be compressed further and would then cost 0.87 to 1.59 DM per gasoline equivalent. Cheap generation of hydropower and biomass is the liquid hydrogen with inexpensive electricity generated (eg from Canadian hydroelectric power plants), there is the free-port of Hamburg today at around 2.25 DM and from 1998 to around 1.80 DM per liter BzÄqu. amount. Tank manufacturers hydrogen from biomass can in a few years ago with the help of the water vapor pressure gasification between 0.87 to 1.74 DM per liter BzÄqu. costs. Particularly for agriculture and forestry, this environmentally-neutral hydrogen production on site will be very interesting medium. In comparison, the hydrogen production from algae and bacterial systems, which will be discussed in the SZ article, it is assumed that the long term hydrogen for 2.18 DM per liter BzÄqu. can be prepared.
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