1. Water – Source of Energy COLEGIUL TEHNIC BUZAU COMENIUS MULTILATERAL PARTNERSHIP LIFE-GIVING WATER This project has been funded with support from the European Commission. This publication [communication] reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein. AUTHORS: THE STUDENTS IX D – POPA VALERIU, XI B – PETRISOR MADALIN, XI G - NITA BOGDAN, PAVEL IONELA, PETRE VALENTINA, XI H – GHIŢĂ LILIANA

2. Hydroelectric energy is a form of energy used in ancient times, for water mills and other traditional technologies and currently is exploited for electricity production using hydraulic turbines. HYDROELECTRIC ENERGY

3. Hydroelectric strengths are : simple operation, do not pollute the environment. Hydroelectric energy is a renewable energy. Rivers, with a difference in level, produce electricity by fall and flow. The force of falling water, moves turbines that produce electricity. The share of electricity produced from hydro power is approx. 22-33%.

4. WHAT IS A HYDRO ? Hydraulique energy is in fact a mechanic energy formed by water potential energy given by the difference in level between the lake and central, that the kinetic energy of the moving water. Exploiting this energy is current in hydropower that converts the water's potential energy into kinetic energy, which then captures using hydraulic turbines that drive electric generators that convert into electricity..

5. Hydroelectric Basins of Romania

6. The largest hydroelectric central in Romania

7. filmulete Portile de fier 1, Danube river, Romania, 2011.06.13..mts Hidrocentrala Lotru Ciunget Visit Romania ~ Barajul Vidraru

8. THE SIRIU DAM The dam is the second largest rockfill dam in country, 5th in Europe and 12th in the world. The Siriu Dam is impressive: over 250 feet long, 150 wide and 120 high, with a length of about 13 km and an average width of 500 meters.

9. The Siriu Dam and The Siriu Lake, Buzau The purpose of its construction was on the one hand an industrial water supply and irrigation downstream localities of 50,000 ha of agricultural land and, on the other hand, the production of electricity.

10. Filmulete youtube Lacul si Barajul Siriu sau Barajul de la Siriu si Viaductul Stanca Teherau

11. Geothermal energy Geothermal energy is a Class renewable ( green ) clean and is heat coming from the Earth ( the rocks and fluids underground ). It is obtained by capturing hot water and steam from volcanic activity and tectonic areas or underground heat. It can be used for heating (a dwelling, water ), and to produce electricity.

12. Geothermal energy Geothermal Map of Romania marks the two types of resources, as temperature distribution according to depth : resources that can be used for heat (temperatures of 60-120 degrees Celsius ) specific to Western Plain ( Banat, Bihor, Hunedoara) resources that can be used to make electricity (water is over 140 degrees, at over three kilometers deep ), specific areas Oas - Gutai - Ţibleş, C ă limani - Gurghiu – Harghita. In Romania geothermal energy is used to: * domestic heating * agriculture ( greenhouses ) * industrial processes *for therapeutic purposes

13. Geothermal Potential of Romania

14. The Green Cities – the future of every city in Romania “The use of renewable natural resources” must become the motto of all the cities of the country.