Thursday, October 17, 2013

Hydrogen Blog Post

   Hydrogen Blog Post                                                                                       Karen Smith

  1.)                                        How A Hydrogen Fuel Generates Electricity

                         Fuel cells generate electricity through chemical reactions between hydrogen and oxygen. The process is an efficient way to produce energy with no toxic waste. Fuel cells already power spacecraft and a few cars. In the future, experts suggests that they will be used in homes and other buildings and even devices such as laptops and cell phones. 

     2.)                                      How a Fuel Cell is Like a Sandwich

                       A fuel cell is like a sandwich. The "bread" on one side is called an anode. The "meat" squished between the cathode and the anode is called an electrolyte. There are lots of different type of fuel cells, which differ mainly in the kinds of electrolytes they use.

    3.)                                   Why Megan was Interested in Lowering the Temperature at which fuel cells operate & The Material she found that Lowered the Temperature at which her Fuel Cell Operated

                     Megan experimented in with various electrolyte materials to lower the materials at which a SOFC operates. No one had ever used this material before in a fuel cell. Her tests showed that a fuel cell based on that material would be able to operate a 650 degrees Celsius. It shortened already 350 degrees less than before, which gives hope to let another step go down. Megan was interested to learn something new and to create something new.

4.)                                     Wade Miller Investigating in His Science Project

                    Wade Miller says it was really confusing when just starting to learn about it, but the concept was exciting enough to keep going. Because Wade lives in Minnesota, a state with hot summer and cold winters, he wanted to test a fuel cell's ability to stand temperature extremes. His main goal was to figure out whether cars powered by fuel cells might some day be practical where he lives.

5.)                                  What PEM stands for & How this Type of Fuel Cell Works

                      PEM stands for proton energy method because he could meausre how much energy the cell produced. He tested the system under heat lamps at 80 degrees Fahrenheit. The fuel cell is predicted to work best at higher temperatures.

6.)                                 There Are Many Different Fuel Cells Because..........  

                     I think there are many different fuel cells because each are different for people to use at different temperatures. These fuels are common as I read about, such as PEM, SOFC, ISEF, and more. There are many different fuel cells because each has it's own individual, even a car has to be powered by a fuel cell. It contains lots of chemical energy of a reaction and it is very important.

7.)                                Comparing Wade and Megan's Project together 

                        Wade's project and Megan's project were both very intriging. But, I enjoyed reading about Wade's theory better. I enjoyed reading his better because it had to do with having cars within his state. That is very interesting because the fossil fuel PEM was used at relatively different temperatures. Cars are very important in people's life because it is excellent transportation to rather just walk. It makes a big difference in people's lives, including mine and hopefully Wade Miller's project did too. Although, both projects were excellent!!
                       

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