GEO 101 Lecture Notes - Lecture 24: Joule Heating, Biogas, Bioenergy
Document Summary
5 types: hydro, solar, wind, geothermal, biomass. Basically greenhouse glass ceiling (and maybe wall) and sun shines through window and heats up whatever absorbs heat. A(cid:374)other exa(cid:373)ple is whe(cid:374) tree"s (cid:271)lo(cid:272)k/do(cid:374)"t (cid:271)lo(cid:272)k su(cid:374)light i(cid:374)to a wi(cid:374)dow: solar thermal low temperature. Solar air collector: used for ventilation, space heating or cooling, swimming pools. Involves moving air/water: solar thermal medium temperature. Solar thermal means air or water is heated by sun, and moved through a system (in contrast to passive solar), in order to provide ventilation, heating, cooling, hot water or electricity. Can turn water into steam and use steam for energy (like a steam engine) Para(cid:271)oli(cid:272) (cid:373)irrors fo(cid:272)us su(cid:374)"s rays to heat liquids to temperatures up to 3800 degrees celsius, for steam or gas turbines to generate electricity: photovoltaic solar. Solar panels (usually used to power things like traffic lights/warning lights or even as big as complete buildings) Biomass: bioenergy living or recently dead organic materials (plants, animals, or by-products)