EnergyBlog
 
 

Energy question of the week: Will we be driving only electric cars in twenty years' time?

25. January 2010, 09.10
The first, purely electrically-driven compact and sports cars are already on the market, but they are much more expensive than their classic diesel or petrol engine counterparts and have a range of no more than 100 kilometres. Only light, high-performance and cheap lithium-ion batteries will help electric cars achieve a breakthrough. Will such electricity storage devices reach production standard in the near future?
Jan Oliver Löfken
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Jan Oliver Löfken
 
 

Energy question of the week: Car exhaust gases as a source of electricity?

18. January 2010, 11.08
In cars with internal combustion engines, a large part of the energy stored in diesel or petrol is simply dissipated as lost heat. It is precisely these hot exhaust gases that an increasing number of scientists worldwide want to use for more efficient electricity generation. They are developing and testing thermoelectric generators that can generate electricity from temperature differences of several hundred degrees. But does electricity from hot car exhaust gases really save fuel?
Jan Oliver Löfken
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Jan Oliver Löfken
 
 

Energy question of the week: How much energy does the Sun send us every day?

12. January 2010, 11.30
Our Sun is a gigantic fusion reactor with an expected lifetime of about ten billion years. Although this period of time is unimaginably long from a human perspective, half of it has already elapsed. That means that our star, a very ordinary one in astronomical terms, will still be radiating the same amount of energy as it now does long after our resources of uranium, coal, gas or crude oil have been used up. How much energy from the Sun reaches us here on Earth?
Dorothee Bürkle
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Dorothee Bürkle
 
 

Which energy source will we use in the future? DLR Energy Blog for ‘Energy’ Science Year

12. January 2010, 09.15
Can we refuel in the future simply using the Sun? How long will the Earth’s oil reserves last? Which energy source will our grandchildren use? Many people are asking scientific researchers about the future of our energy supply. The German Federal Ministry of Education and Research (Bundesministerium für Bildung und Forschung; BMBF) has chosen the slogan ‘The Future of Energy’ for Science Year 2010. In the DLR Energy Blog, science journalist Jan Oliver Löfken will answer a question about energy each week during the year.
Dorothee Bürkle
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Dorothee Bürkle