Geothermal energy
1. Iceland
Before we move onto our topic, geothermal energy, I would like to introduce a country depending a lot on this kind of energy, Iceland. We can find out that some 66 percent of energy of Iceland comes from geothermal energy! People on Iceland make good use of this underground energy. Geothermal energy is not only used to generate electricity, it is also the resource of hot springs, a gift given by God for people on Iceland. Interestingly, there is a restaurant on Iceland where food is cooked by the steam generated by the underground heat.
A geyser is a spring characterized by intermittent discharge of water ejected turbulently and accompanied by a vapour phase (steam). #1
2. Geothermal power plant
The picture below shows how geothermal power plant functions simply. Although geothermal power plants produce little amount of greenhouse gas, it dosen't mean that it is completely friendly to earth. The steam is composed of hot water vapor, carbon dioxide, hydrogen and hydrogen sulfide(toxic). Separating hydrogen sulfide from the steam can be a costly procedure.You can take a look at how people on Iceland are trying to deal with this problem in the video.
reference: pic. 1: http://www.journalisme-scientifique.com/Geothermal-Energy-ICELAND.html
pic. 2: http://en.wikipedia.org/wiki/Geyser
Iceland is really a famous country which depends geothermal energy a lot.
回覆刪除Mt. Datun Volcano Group in Taiwan also has a lot of underground energy resources.
After reading your article, I learn that geothermal power has pros and cons.
Actually, Taiwan own the absolutely advantages on geothermal power. Why Taiwan dump goverment don't utilize it.
回覆刪除I really hope Taiwan can make good use of this kind of green energy too......,instead of depending on coal and nuclear so much
回覆刪除Even there exists some disadvantages on geothermal energy , it is still better than the offending energy we using now!
回覆刪除