Bài giảng Environmental Sciences - Chapter 14 Renewable Energy

Tài liệu Bài giảng Environmental Sciences - Chapter 14 Renewable Energy: Chapter 14 Renewable EnergyRenewableSunlight, wind, falling H2O, geothermalNot fossil fuels, not nuclearIndirect Solar powerHow does it affectWind?Hydropower?Firewood?Hydro carbon fuels?Nuclear and Geothermal are not indirect solar Passive Solar HeatingLarge south-facing windows, heavy drapes to trap heat at night, interior bricks to trap heatShade windows in summerEven though back up systems are required, and solar heating may only lessen the need for heating oil a few %, it will help us adapt to diminishing oil supplies.PhotovoltaicsActive solar energyPhotovoltaic (PV) panels can be used to convert the energy from the sun into electricty.“Every hour enough solar energy reaches the Earth to meet the world's energy demand for a whole year." you know thatPower towers are sun tracking mirrors used to focus sunlight on a central boilerYou can cook food in a solar ovenCH4 (methane) results from digesting manure anaerobicallyAlcohol results from fermenting sugars or starch anaerobically...