Hydroelectric power Yul van der Stap What is

Hydroelectric power Yul van der Stap

What is… Hydroelectric power water power generated through the energy of flowing

History

History Fox river in Appelton, Wisconsin

History

Dam

Energy transformation

Formula PE=pgh. V P=ηρgh. Q For 1 m^3/sec from head of 1 m , P=9 k. W, if η 90%

Advantages & disadvantages Dam + Constant rate of electricity production Long durability Lake can be used as irrigation purpose Leisure area - High cost of construction Destruction of environment Alter of natural water table level.

Run of river

Energy transformation

Formula Pmax =½ηρQv 2 Q=Av Pmax if =1/2ηρAv 3 1 m 3 of water flows 1 ms-1 with 100% efficiency, P=0. 5 k. W

Advantages & disadvantages Run of River + Avoids the need to build large dams to store water projects will operate anywhere between 65% to 90% of the time in any given year Low potential risk of water quality Has minimal impact on environment - Low production rate Low availability

Tidal flows

Transformation KE (water) KE (turbine) Electricity (generator)

Formula Pmax if =1/2ηρAv 3 1 m 3 of water flows 1 ms-1 with 100% efficiency, P=0. 4 k. W

Advantages & disadvantages tidal flow + Can harness until sun and moon exist Efficiency of 80% Predictability Protection of coastal area High construction cost Effective only 10 hrs /day Environmental damage

The end http: //www. technologystudent. com/energy 1/hydr 2. htm http: //www. mpoweruk. com/hydro_power. htm http: //greenliving. nationalgeographic. com/history-hydroelectric-power 20128. html http: //www. window. state. tx. us/specialrpt/energy/renewable/ http: //teeic. anl. gov/er/lhhydro/restech/desc/index. cfm http: //www. runofriverpower. com/media/documents/CEBC_FSRun. Of. River_WEB 354. pdf http: //hydroearth. blogspot. kr/2012/10/tidal-power-advantages-anddisadvantages. html http: //www. youtube. com/watch? v=q. RUl 1 m. JQHmc&list=PLC 73 D 6 D 66 C 6 F 9 D 747 http: //www. pembina. org/re/sources/hydro-power http: //www. youtube. com/watch? v=rn. PEtw. Qtm. GQ