http://www.unendlich-viel-energie.de/uploads/media/AEE_Strommix- Deutschland_2011_Jan12.pdf Energy mix in Germany in 2011 wable energies made up 20% of gross energy generati natural gas hard coal nuclear energy lignite renewable energies 20% other s Wind energy Biomass energy Including energy from waste Water power photovoltaic total
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Energy mix in Germany in 2011 Renewable energies made up 20% of gross energy generation
natural gas
hard coal
nuclear energy
lignite
renewable energies 20%
others Wind energy
Biomass energyIncluding energy from waste
Water power
photovoltaic
total
How a biomass
cogeneration plant works
Biomass cogeneration plant Neustrelitz (housing estate of Kiefernheide)
In operation: since January 2006
Production/year: - electricity: 45.000 MWh/a,
- heat: 63.000 MWh/a
Resource base: wood chips from forest wood waste, tree and shrub cutting (85.000 t/a)CO2 conservation: 14.577 t/a= CO2 emission of 7.000 cars
pellets
combustion chamber
conveyor belt
cold water
fire
hot water au
tocla
ves
steam
turbinegenerator
district heating grid
emissionfilter
steam
Wind energy
- electricity from wind energy is clean and reduces the emission of greenhouse gases (per 1 kWh = avoidance of 860 gramm of CO2)- wind power = the dominating field of generating energy
among the renewable energies in Germany- In the end of 2011 : Germany = third largest capacity of
Offshore wind farm projects at the coast of Mecklenburg- Western Pomerania
Baltic 1 Offshore Wind Farm
- first commercial offshore wind farm of Germany in the Baltic Sea- located about 16 kilometres north of the Darss- Zingst Peninsula- covers about seven square kilometers - 48.3 MW wind farm.- work started in July 2010; officially commissioned on 2 May 2011- Baltic 2: 288 MW from 80 turbines
- wind = a low cost, low maintenance energy production method
- wind energy works by using natural wind movements, capturing it as kinetic energy through turbine blades, then converting the kinetic energy into electricity through an
electro magnetic generator at the top of the turbine- electricity output depends on
different aspects:1. location (how much wind
there is), 2. turbine size and style,
3. rotar diameter
How does wind energy work
How much electricity can a turbine produce?
1 wind turbine generates energy for a small town(at a capacity of 5 MW it generates 17 millions kWh per year = consumption of 4.900 households with 14.600 people)
- depends on the size and possible capacity of a wind turbine(example: wind turbine of a capacity of 2,5 MW 5 mill. kWh/year)
- also depends on the wind speed need at least 3 to 4 m/s; wind speed over 25m/s turbines are switched off