RENEWABLE ENERGY Flashcards
Energy flows that are replenished
Renewable energy source
Intercepted by the earth
Solar energy
Prime renewable energy source
To utilize solar energy
Converting it to heat fuel power
Importance of RE
World population
Economic growth
Increase Capita
Urban clustering and centralization
Fossil fuels
Drawbacks on the use of RE
Large tracks of land
Material requirements
Transportation of energy
Improved science and tech
Economic cost
Theoretical maximum rate
Renewable mode
Renewable energy will cease to become renewable if it used up at a
Rate faster
Prime renewable
Solar Energy
Due to uneven heating of the eart
Wind power
Due to photosynthesis
Biomass energy
Due to hydrologic cycle
Hydro power
Associated with cooling of the earth
Geothermal energy
Not a consequence of solar energy
Salinity gradient
Due to lunar or solar
Tidal energy
Due to wind
Wace power
Power output of a mini hydro power unit
60-80%
Worlds geothermal energy output
> 12.8 GW
Highest geothermal resources
North America 21
Asia 21
Eastern Europe 17
South America 14
Africa 13
Use of renewable fuel such as hydrogen
Fuel cells
In the combustion of hydrogen and oxygen, heat is released
Gibbs free energy
