Monthly Archives: September 2012

Lego Mindstorm Robotics Lab

Last Thursday our class experimented with Lego “Mindstorm” robotics.  I greatly enjoyed being able to engage in a hands on activity in class.    I learned a lot about Lego robotics.  The software seems very confusing at first, these little robots certainly have the potential to be very complicated, but working with partners made the task a lot easier.  Our lab was a fairly simple one, to have the Robot move forward in  a straight line and record how far it went and how fast it got there.  we also measured the wheel diameter as well as how many rotations occurred during the run.

The Robot in all its Lego glory

 

Measurements:

  • Wheel diameter: 86cm
  • Time: 1.25 seconds
  • Distance: 29cm
  • Wheels 1: 849 Rotations

Green Energy in Germany: The Renewable Revolution!

Since the beginning of the new millennium the German government has been working with many large domestic companies to face the obstacle of upgrading their power grid. Germany is the sixth largest consumer of energy worldwide; switching energy to new renewable sources is a difficult task.  So far the process has been expensive but effective, boosting German clean energy consumption from a mere 6.3% in 2000 to a whopping 25% in 2012.  The government is diversifying its clean energy production by investing research into many different sources of renewable energy.  Sustainable sources of energy have been heavily subsidized and millions from the federal budget have been spent on scientific development. New wind, solar, geothermal, and hydroelectric energy projects have proved to have many benefits.  This dramatic rise in clean energy has created many new jobs in addition to lessening the countries dependence on foreign oil.  By supporting the development of new, more efficient technologies German companies are now dominating global markets.

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German Wind Power

Germany is the third largest user of wind power worldwide, it accounted for 8% of their total electric power in 2011 and that number is only expected to rise.  Plans for the building of large offshore wind farms promise to make use of strong ocean wind currents.  So far there are close to 22,000 individual turbines on German federal land.  In addition to providing a good deal of energy, around 70,000 Germans are employed in the wind power industry.  Because of massive amounts of federal funding for research the cost of manufacturing German wind turbines has decreased rapidly in the last decade leading many large German companies to export their products very profitably.  Companies such as NorDex, Repower and Enercon have began to dominate world markets for wind power because of the rising demand both foreign and domestic.  This successful commercialization of wind power proves that renewable energies can prove to be profitable.  The main concerns in regards to wind power is its adverse effects on bird populations and general unsightliness of the turbines; the German government hopes to resolve these issues by focusing upon offshore projects where turbines will be out of sight.  With the recent investments into wind power the Germans hope to lessen their dependence on coal and nuclear power.

a map of German wind farms

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The Cost of Cleanliness: The German Renewable Energy Act

The German government today is run primarily by the “grand coalition” a combination of the Christian Democratic Party, the Social Democratic Party, and the Green party.  Together these parties elected Angela Merkel, a Christian Democrat, to be the first female German chancellor in 2005.  Since 2005 this coalition government has been working to promote clean energy policies.  Angela Merkel’s views about clean and sustainable energy can best be summed up in her own words:

 

“As the first big industrialized nation, we can achieve such a formation toward efficient and renewable energies, with all the opportunities that brings for exports, developing new technologies and jobs.”

German Chancellor Angela Merkel

Of course these bold ideas need a good deal of federal funding, but who is really paying the price of rethinking the German energy grid?  In order to make the production of clean energy profitable the government currently subsidizes all forms of energy it deems to be clean, renewable, and safe.  Passing the German Renewable Energy act in 2000 made it possible to switch from fossil and atomic energy to clean, safe renewables, without collapsing the economy.  Instead of implementing new taxes the German government simply added the price of subsidizing renewables to the electric bills of citizens, a few extra cents per kilowatt spread the cost out to those who use the most energy, citizens and companies are rewarded for being efficient.  In order to encourage innovation and competition these subsidy rates are ever decreasing, by the time renewable technologies stop receiving government aid they will hopefully be developed enough to completely replace fossil fuels and nuclear energy. The growing unpopularity of nuclear power in Germany stemmed from concerns about the danger of nuclear meltdowns; in 2001 the government officially made plans to close all of their nuclear power plants by the year 2033.  The deadline to shut down all nuclear power plants was pushed forward to 2022 following the disaster at the Fukushima Diaiichi nuclear power plant in 2011.  8 of the country’s 17 reactors have already been closed.  Only time will tell if German energy consumption will surpass energy production without these reactors that supplied almost 18% of the countries power in 2011.  Already Germany has been forced to rely on Russian energy imports, however German officials are hopeful that sustainable solutions will begin to fill that energy gap as green technology becomes more advanced.

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