renewable energy. solar energy can be used to: -heat water -heat spaces -run electricity...
TRANSCRIPT
RENEWABLE
ENERGY
SOLAR ENERGY
Can be used to:-Heat water-Heat spaces-Run electricity (electronics,
appliances)
Works from PHOTOVOLTAIC devices (PV)
P R O S
No pollution or CO2 emissions
When on buildings, they have minimal impact on the environment
Renewable
Saves $
Low maintenance
C O N S
Sunlight not always constant (weather, location)
Requires a large surface to collect sun energy to power a building
Installation is expensive
HYDROGEN
ENERGY
HYDROGEN ENERGY
-Can be made from stored Hydrogen (not common)
-Can also come from fossil fuels, hydrocarbons, biomass, and water, sunlight, wind, and nuclear sources.
Fuel Cells
http://www.hydrogen.energy.gov/production.html
http://www.autospectator.com/cars/models/2011-honda-fcx-clarity-official-photos-features-specs-pricing
HYDROGEN ENERGY
P R O S
-no pollution
-no moving parts
-operates at higher efficiencies than normal fuels
C O N S
-More expensive
-cars not built to hold fuel cells
-may still require fossil fuels
-H2 is hard to store or transport
-few refilling stations
WIN
D ENERGY
WIN
D T
URBINES
http://inhabitat.com/bahrain-world-trade-center-turbines-activate/
WIND ENERGY
P R O S
-sustainable
-Non-polluting
-continual
-low maintenance cost
-proven effective
C O N S
-unreliable and depends on wind patterns, temp, time of year
-equipment is expensive
-initial expense is high
HYDROELECTRIC ENERGY
P R O S
-sustainable
-Non-polluting
-controls flooding
-recreational opportunities
-low expenses after initial cost
-lasts longer
C O N S
-changes to river ecosystem
-lowers water quality, pollutants back up in lake
-effects fish migration
-long construction process
Click icon to add pictureGEOTHERMAL
ENERGY
WHAT IS IT?
It’s heat energy from the earth
http://www.eere.energy.gov/topics/geothermal.html
HTTP://WWW.GENI.ORG/GLOBALENERGY/LIBRARY/RENEWABLE-ENERGY-RESOURCES/GEOTHERMAL.SHTML
GEOTHERMAL ENERGYP R O S
-sustainable
-mostly non polluting
-energy can be produced non-stop
-minimal expenses AFTER initial costs
-minimal impact on stations that collect the energy
C O N S
-limited locations
-constantly replenishing water
-could contaminate groundwater
-CO2 and H2S could possibly be released
-pricey installation
Click icon to add picture
BIOMASS F
UELS
BIOMASS FUELS
http://www.nrel.gov/gis/biomass.html
BIOMASS FUELS
P R O S
-reduces/equals out greenhouse gases (CO2)
-gives an alternate to fossil fuels
-almost everywhere
-reduces waste products
C O N S
-uses food crops
-increases price of food and livestock
-takes more energy to produce then it makes
-expensive