RENEWABLE SOURCES OF
ENERGY
Biomass
It is an organic substance in which energy is accumulated
by photosynthesis process.
This renewable source of energy is th...
Sources of biomass energy
• Wood and it’s waste
• Agricultural waste (for example: straw)
• Animal waste (manure)
• Indust...
Biomass can be used
Biomass as a fuel can be used in solid, liquid or gaseous
state. In the first case, it takes only the ...
Biomass is a part of a carbon cycle. During photosynthesis,
carbon from the atmosphere is absorbed by plants. During
the b...
Advantages
• Biomass is a renewable energy source that is easier taken than

other fuels and which can be exploited using ...
RENEWABLE SOURCES OF
ENERGY
Trash
Waste
Waste is unwanted material which mainly
comes into existence due to the human
activities. It is not useful, often da...
How to use it?

Currently, the waste is
deposited in landfills.
However, it is not a perfect
decision for nature or in
eco...
Methods
• Boiling layer method;
• Waste incineration in rotary kilns;
• Waste incineration on a moving grate.
On a moving grate
This and similar
techniques can be
applied to many
different waste
compositions.
Therefore grate-based
b...
Boiling layer method
Usage of such technology
is completely different as
it has another type of
furnace. The combustion
ai...
Burning in rotary kilns
These kilns get the fuel from
the bottom. At the same time,
the waste and the combustion
air slowl...
RENEWABLE SOURCES OF
ENERGY
WATER ENERGY
Flowing (running) water
•

Is one of the most useful renewable energy
sources;
• Dams and hydro-electric power stations ar...
Advantages and Disadvantages
• Energy of flowing water

never runs out
• Electricity production is
concidered to be clean
...
Waves Of The Sea
• Waves have a lot of energy, especially when strong wind blows
• To get energy from the sea, energy coll...
The tide and ebb energy
• Is used only in the places where there is a big

amplitude of tides and ebbs.
• The turbine blad...
Sea currents
• Produce energy with less flush speed than ordinary

water turbines.
• Operate on vibration produced by whir...
RENEWABLE SOURCES OF
ENERGY
Solar energy
Solar energy
Solar energy is the energy released during the reactions
in the sun. The solar energy reaches the Earth,
dete...
The light and heat provided by tyhe sun are used as
renewable source of energy. However, modern
technologies are not adjus...
The sun is the most powerful renewable energy
source on Earth. It is estimted that the theoretical
annual global solar ene...
Solar energetics in Lithuania
• During the year 2010, 2,4MWh of energy is produced . In

2011 Kruonis Pumped Storage Plant...
Solar energy potential in Europe
Solar energy distribution in
Lithuania
RENEWABLE SOURCES OF
ENERGY
Wind power
Wind power
• Wind power is the conversion of wind energy into a

useful form of energy, such as using wind turbines to
mak...
Advantages of wind power
• The wind is free and with modern technology it can be

captured efficiently.
• Once the wind tu...
Wind power in Lithuania
• In 2003 in Lithuania‘s town Skuodas, a 160 kW wind

power – station from Denmark was built and i...
Lithuanian presentation in Hungary
Lithuanian presentation in Hungary
Lithuanian presentation in Hungary
Lithuanian presentation in Hungary
Lithuanian presentation in Hungary
Lithuanian presentation in Hungary
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  • Lithuanian presentation in Hungary

    1. 1. RENEWABLE SOURCES OF ENERGY Biomass
    2. 2. It is an organic substance in which energy is accumulated by photosynthesis process. This renewable source of energy is the most common, widely used and the oldest one in our world. Biomass is distinguished from other sources of energy in the way that it is an accumulated solar energy. In Lithuania, biomass accounts for the largest part of all renewable energy consumption. Firewood and agricultural waste designed for fuel are the mostly used types of biomass. According to the amount of biomass per person, Lithuania is in the second position in the EU.
    3. 3. Sources of biomass energy • Wood and it’s waste • Agricultural waste (for example: straw) • Animal waste (manure) • Industrial waste • Sewage sludge accumulation of organic matter • The organic fraction of municipal waste.
    4. 4. Biomass can be used Biomass as a fuel can be used in solid, liquid or gaseous state. In the first case, it takes only the minimum of machining, such as chopping. In order to get liquid or gaseous fuel it is not enough to process the biomass mechanically, it is also necessary to use a much more complex thermal, chemical, biochemical and microbiological processing techniques. In Lithuania, the main problem why the use of biomass for heating is not increasing rapidly is the lack of sufficient boiler-houses suitable for biomass. In order to exploit the potential of biomass, Lithuania needs to invest into developing of biomass power plants.
    5. 5. Biomass is a part of a carbon cycle. During photosynthesis, carbon from the atmosphere is absorbed by plants. During the burning or rotting process, the carbon is released and goes back into the atmosphere. The circle takes a relatively short period and the plant used as material for fuel can be replaced by another new fast grower. Therefore, a stable carbon levels in the atmosphere come from the use of materials from the fuel. In Lithuania: Over the years it is planned to produce up to 42 thousand tons of products which will be exported to the EU countries. Per year, one factory working at full capacity can produce seven thousand tons of biomass granules.
    6. 6. Advantages • Biomass is a renewable energy source that is easier taken than other fuels and which can be exploited using less environmentalpolluting equipment. • Waste from agriculture and forestry is the most common source of biomass, which is processed in the form of briquettes and granules and is used for heat production. The production of liquid fuels, such as ethanol or biodiesel, from agricultural products grows rapidly. • It is favorable to use biomass in the energy production industry, as the waste from the organic matter can be used as fuel. In most cases biomass is associated with vegetation, which are used for the production of biofuels, but the material of vegetable or animal origin, can be used for the production of chemicals, heat or fibre.
    7. 7. RENEWABLE SOURCES OF ENERGY Trash
    8. 8. Waste Waste is unwanted material which mainly comes into existence due to the human activities. It is not useful, often dangerous and have no economic value. However, scientists say that everything in nature is useful, and wastle can be serviceable if we know how to use it.
    9. 9. How to use it? Currently, the waste is deposited in landfills. However, it is not a perfect decision for nature or in economic terms. The proposals vary, but now the main focus is on the incineration of waste. On the one hand, it is a source of constant renewable fuel; on the other hand, ecologists and other nature lovers call such waste incineration environment-unfriendly as it pollutes the environment and is a potential threat to the human health.
    10. 10. Methods • Boiling layer method; • Waste incineration in rotary kilns; • Waste incineration on a moving grate.
    11. 11. On a moving grate This and similar techniques can be applied to many different waste compositions. Therefore grate-based boilers are widely used for incineration of mixed-household and municipal waste.
    12. 12. Boiling layer method Usage of such technology is completely different as it has another type of furnace. The combustion air comes from the bottom, so the burning waste gives the impression of boiling process.
    13. 13. Burning in rotary kilns These kilns get the fuel from the bottom. At the same time, the waste and the combustion air slowly move from the top downwards . While moving down, the wastle dries and then it is burned in very high temperature (1500-1800°C).
    14. 14. RENEWABLE SOURCES OF ENERGY WATER ENERGY
    15. 15. Flowing (running) water • Is one of the most useful renewable energy sources; • Dams and hydro-electric power stations are built to get energy with the help of falling water; • 25 % of water energy sources are used in the world, while hydro-electric power stations produce 20 % of energy; • In 1903 the first Lithuanian hydro-electric power station in which there was an electric generator turned by a water wheel was founded.
    16. 16. Advantages and Disadvantages • Energy of flowing water never runs out • Electricity production is concidered to be clean • Long hydro-electric power plant working time • Installation of dams is expensive and it takes a long time to built them • While the construction of dams, ponds which flood big areas form • Agricultular land is lost, animals and plants die.
    17. 17. Waves Of The Sea • Waves have a lot of energy, especially when strong wind blows • To get energy from the sea, energy collectors are built • However, to hold out on destructive force of waves and convert it into the useful energy, very strong materials must be used • The produced energy was used to supply the sea lighthouses
    18. 18. The tide and ebb energy • Is used only in the places where there is a big amplitude of tides and ebbs. • The turbine blades are arranged in the way they can be rotated by rising or refluent water, as well. • It is clean and safe source of energy, but it’s blocking fish spawning, inundating water floats wetlands. • This technology has been tested and considered to be paybable.
    19. 19. Sea currents • Produce energy with less flush speed than ordinary water turbines. • Operate on vibration produced by whirls that occur when water flows over variety of obstacles. • Track and field stadium sized area of cylinders would be sufficient to produce energy for about 0.0377 EUR/kWh, and that energy would be enough for approximately 100,000 families. • Scientists are looking for opportunities to start building an experimental power-station.
    20. 20. RENEWABLE SOURCES OF ENERGY Solar energy
    21. 21. Solar energy Solar energy is the energy released during the reactions in the sun. The solar energy reaches the Earth, determines its climate and sustains life.
    22. 22. The light and heat provided by tyhe sun are used as renewable source of energy. However, modern technologies are not adjusted to use this energy in an effective way yet. In 2004, only 0.04% of the world's electricity is produced from solar energy.
    23. 23. The sun is the most powerful renewable energy source on Earth. It is estimted that the theoretical annual global solar energy potential is 900 milion TWh and it is about 60 times higher than the theoretical annual global wind energy potential, about 2200 times higher than the theoretical annual geothermal energy potential, about 4500 times higher then biomass energy potential and about 36000 times higher than anual theoretical hydropower potential in the world.
    24. 24. Solar energetics in Lithuania • During the year 2010, 2,4MWh of energy is produced . In 2011 Kruonis Pumped Storage Plant installed the biggest solar power system in Lithuania, which is expected to make 70 MWh power every year. Solar power in Lithuania is mostly used for heating water in flats or vacuum solar collectors during not-heating time. • Lithuania has 40 small solar power-plants which provide electricity for the company LESTO. In addition, a number of private power-plans owned by farmers produce electricity for their own needs.
    25. 25. Solar energy potential in Europe
    26. 26. Solar energy distribution in Lithuania
    27. 27. RENEWABLE SOURCES OF ENERGY Wind power
    28. 28. Wind power • Wind power is the conversion of wind energy into a useful form of energy, such as using wind turbines to make electrical power, windmills for mechanical power, windpumps for water pumping or drainage, or sails to propel ships.
    29. 29. Advantages of wind power • The wind is free and with modern technology it can be captured efficiently. • Once the wind turbine is built the energy it produces does not cause green house gases or other pollutants. • Wind turbines have a role to play in both the developed and third world. • Wind turbines are available in a range of sizes which means a vast range of people and businesses can use them. Single households to small towns and villages can make good use of range of wind turbines available today.
    30. 30. Wind power in Lithuania • In 2003 in Lithuania‘s town Skuodas, a 160 kW wind power – station from Denmark was built and incorporated into the main electric system. Although it didn‘t operate for a long time because of technical problems, it was the beginning of Lithuania‘s wind energetics. On the 9th of March, 2004 in Kretinga district, Vydmantai demonstrative wind power – station was inserted into Lithuania‘s electric system. That was a 600 kW wind power – station of ultimate design produced by German company „ENERCON GmbH“. It was an offspring of collaboration between Kaišiadorys and Magdeburg dioceses.

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