Transcript Power Stations in Estonia
Power Stations in Estonia By: Ann, Annika, Kerli, Jaana, Kaija, Merit, Diana What is oil-shale? • One of the most important mineral products found in Estonia • Resembles brownish, flaky stone • Thin oil-shale leaves can be lit with a match: reason to be called “burning rock” in Estonian First power plants • At the end of the 19th century power engineering development began in the largest towns and industrial centres of Estonia- Tallinn, Pärnu, Kunda, Tartu and Narva • Power engineering in Narva: connected with industries such as Kreenholm Manufactory, the Narva Flaw Mill and the Narva Cloth Factory (worked on water!) Mining oil-shale in 1928 Mining oil-shale underground Power stations in Estonia Based on oil-shale: • The Balti Power Plant • The Eesti Power Plant • The Iru Power Plant Cover 95% of energy needs The Balti Power Plant • One of the world`s biggest power stations that uses oil-shale • Built 1956-1965, • fullpower 600 MW, • uses 10-12 million tons of oil-shale per year • Possible to use oil-shale ashes: no need to process raw material+ less pollution The Eesti Power Plant • the biggest power station in the world that uses the local oil-shale with low calorific value • Full power is 1610 MW The Iru Power Plant • Near Tallinn, built to heat Lasnamägi (Tallinn’s district) and Maardu • Since 1993 gas has been used (low repairing costs, higher profitableness) Ash hills • The ash- as result of production activity is stored in the ash disposal area located not far from the power station • 100 million tons of ash sediments • Most ash can be used liming acid soils in agriculture but… MOST ASH FORMS ASH HILLS! A Survey among students • How much energy do you use at home per month? 46 students answered on average 250 kWh/month 23 students (50%) 950 kWh/month 8 students (~18%) do not know 15 students (~33%) A Survey among students (2) • How do you save energy at home? 1. Saving bulbs (30) 2. Daylight lamps (11) 3. Lower (night) price for higher power machines at home (26) 4. Automatic electric heating (5) 5. Switching lights off when leaving a room (45) 6. A-category machines (22) 7. Stove heating (2) Thank you for listening!