Alternative Energy Sources
Viribus Unitis - help the world with joint efforts
4th meeting, Baktay Ervin Gimnázium ,
Dunaharaszti, Hungary, 4 - 11 October, 2013
WHAT IS BIOENERGY?
• A renewable energy made from biological sources.
• We divide bioenergy into:
- “Biowarm” or thermal energy,
- “Bioelectricity” or electricity from biomass,
- Biofuels (solids, liquids and gases).
WOOD BIOMASS IN SLOVENIA
• 10.900 km² of forests in Slovenia (60%)
• More than 100,000 buildings
• Produced from left-over food products,
• Biodiesel consumption in Slovenia:
- 2008: at least 2%,
- 2009: at least 3,0 %,
- 2010: at least 3,5 %,
- 2011: at least 4 %,
In the 5 years after the year 2011: at least 5% of
• An alcohol from organic materials.
• No transport on bioethanol in Slovenia.
• New way of direct processing.
• Used for cooking and heating, producing synthetic
• We have charcoal producton in Pohorje and
• Methane is a chemical compound with the
chemical formula CH 4.
• Vehicles on methane gas are more eco.
• We have buses on methane gas.
• 2010: first car in Slovenia
COGENERATION OF HEAT AND
• Production of heat and electricity at the same time .
• New technology already commercially interesting
THE PRODUCTION OF HEAT
• Local heating: wood, pellets, wood chips, etc.
• District heating: wood chips, peat, fuel from waste
wood, sawdust, and straw.
Patricija Arh 2.C
Maja Štojs 2.C
Monika Novak 3.D
WHAT IS SOLAR POWER?
• Inexhaustible and renewable source of energy,
• Electromagnetic waves,
• Part of the natural energy flows.
SOLAR POWER PLANTS IN SLOVENIA
• 3215 operating solar power plants,
• The best conditions are in the Primorska region.
SOLAR POWER PLANTS IN SLOVENIA
• Total output of 3,6 MW,
• The strongest area represented in the Štajerska
• Utilization of solar energy,
• Heating buildings and water,
KEY BENEFITS OF THE USE OF
Inexhaustible source of energy,
Low maintenance costs,
Lower consumption of fossil fuels,
Reduction of CO2 emissions.
• Heat from the Earth,
• Clean and sustainable,
• Technologies taking advantage of geothermal
dry steam power plants,
flash steam power plants,
and binary cycle power plants.
DRY STEAM PLANTS
• Simplest & oldest design,
• Geothermal steam of 150°C or greater to turn
FLASH STEAM PLANTS
• Flashed steam used to drive turbines,
• Requirement of fluid temperatures of at least 180°C,
• Most common type of plants.
BINARY CYCLE POWER PLANTS
• Most recent development,
• Acceptance of fluid temperatures as low as 57°C.
• Emissions contain few chemical pollutants and little
• Geothermal electricity sold to local power grids,
• Clean energy for some of the world‟s most rapidly
• Energy from hydropower or water power,
• Usage of the Earth's water cycle to generate
• High precipitation levels and large elevation
changes necessary to
generate significant quantities
ALTERNATIVE ENERGY PLANTS IN
• Hydroelectric plants such as Blanca, Boštjan,
Maribor, Medvode, Moste, and Vrhovo.
HYDROELECTRIC PLANT MARIBOR
• Largest Slovenian producer of electric power using
• Generating 25,5 % of electric power in Slovenia,
• 80 % of Slovenia‟s electric power using renewable
• Electric power generated in an
environmentally friendly manner.
HYDROELECTRIC ENERGY ADVANTAGES
• Electricity can be constantly produced, once a
dam is constructed,
• Dams designed to last decades,
• Not producing any green house gases.
• Dams extremely expensive to build,
• Dams must be built to a very high standard,
• People forcibly removed so that hydro-power
schemes can go ahead.
• Limit the use of fossil fuels,
• Expand the usage of alternative fuels,
• Slowing down the degradation of the destruction of
ENVIROMENTAL ISSUES IN SLOVENIA
• Greenhouse emissions caused by traffic in decline
• Biggest state investments focused on state roads,
• Biofuels accounting for 2% in Slovenia,
• Air quality problematic, as the biggest problems
being nitrogen oxides and dust particles.
Jaka Zorman, 3.f
Špela Pozvek, 3.c
Does not destroy the working surfaces,
Money back in 14 years,
Lasts 25 years.
• Danger to birds,
• Requires more conventional power plants to
• Wind turbines are noisy.
• In 2010 all wind turbines generated 197 GW,
• Today they generate 430 THW, which is 2.5% of
global electrical energy consumption,
• In the last five years, the annual growth of new
plants was 27.6 percent.
FIRST BIG SLOVENIAN WIND TURBINE
Dolenja vas near Senožeče,
PROBLEMS IN SLOVENIA
• For cottages„ energy,
• Documentation and licenses,
• Natural heritage