Energy_sources_能源简介英文资料.ppt
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1、Energy sources,王逸 20110857 茅以升4班,primary energy resources,Primary energy is an energy form found in nature that has not been subjected to any conversion or transformation process. Such as,Fossil fuels energy Oil Coal natural gas,Wind energy Solar energy Geothermal energy,secondary energy resources,S
2、econdary energy refers to the more convenient forms of energy which are transformed from other, primary, energy sources through energy conversion processes.,The two most well-known energy carriers are: Electricity Hydrogen They are usually Renewable sources,Wind energy,Wind power,Wind power harnesse
3、s the power of the wind to propel the blades of wind turbines. These turbines cause the rotation of magnets, which creates electricity. Wind towers are usually built together on wind farms.,hydro energy,hydro energy,In hydro energy, the gravitational descent of a river is compressed from a long run
4、to a single location with a dam or a flume.,Solar energy,Solar power,Solar power involves using solar cells to convert sunlight into electricity, using sunlight hitting solar thermal panels to convert sunlight to heat water or air, using sunlight hitting a parabolic mirror to heat water (producing s
5、team), or using sunlight entering windows for passive solar heating of a building.,Geothermal energy,Geothermal energy,Geothermal energy harnesses the heat energy present underneath the Earth, and is capable of supplying all of our energy.,Fossil fuels energy,Fossil fuels,Fossil fuels are fuels form
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