BIOL-103 Lecture Notes - Lecture 11: Kinetic Energy
3 Oct 2018
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Large scale hydroelectricity: high dam across a large river to create reservoir, water flow @ controlled rate > turbine > generator > electricity. Large scale: small scale, as lo(cid:374)g as you ha(cid:448)e e(cid:374)ough ru(cid:374)(cid:374)i(cid:374)g (cid:449)ater, it"ll (cid:449)ork throughout the year a(cid:374)d (cid:1006)4 hours a day, u(cid:374)like solar that (cid:374)eeds su(cid:374)light co(cid:374)sta(cid:374)tly, especially at (cid:374)ight. You"re produci(cid:374)g electricity for as long as water exists and flows. Low or no dam with no reservoir across small river: stream flow > turbine/water wheel > generator > electricity, run-of-ri(cid:448)er syste(cid:373) di(cid:448)erts a portio(cid:374) of the ri(cid:448)er"s (cid:449)ater for electricity ge(cid:374)eratio(cid:374). Some designs involve piping water downhill through a powerhouse and releasing it downriver, and some involve using water as it flows over shallow dams. Hydroelectricity in 2012: 19% of global electricity, canada: 2nd largest producer in the world - 10. 8%. Chi(cid:374)a: (cid:1005)7% of it"s electricity - largest global producer: other countries, norway: 97% of its electricity.
