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7.5 Renewable Energy - Coggle Diagram
7.5 Renewable Energy
Wind Energy
works at land or at sea
always in motion due to the different temperatures on Earth
can price many times the current use of electricity
high net energy process with low electricity cost with no greenhouse gases released
need backup storage systems
Energy efficiency and conservation
energy can be conserved with responsible consumption
energy waste
80% of energy is lost in combustion engines
data servers use energy all day to store and process information
heat foes to the atmosphere from power plant's fuel
energy efficiency is based on how much useful work yo do from one unit of energy and reduces unavoidable loss
solutions
have better transit systems
buildings should turn off unused energy consumers and go for effective heating and cooling
power plants and industries can change electric motors making them efficient
Transition to renewable energy
saves money and offers job opportunities
less use of fossil fuels
mix of renewable energy
better energy efficiency and reduces energy waste
Solar energy
active solar heating systems captures energy by pumping to be used later or to be stored
solar thermal systems
parabolic mirrors
moving mirrors
passive solar heating systems taken energy from the sun directly and is really common
photovoltaic cells convert sunlight into electricity by a chemical phenomenon
does not contaminate, easy to use, and requires less maintanence
low efficiency, does not work at night, and is expensive
Geothermal energy
uses the heat stored in soil, rocks, and fluids on Earth's core
geothermal pumps extract heat from the ground using water pipes and can transfer it to the soil
the most efficient and reliable form of heating or cooling
hydrothermal reservoirs are better sources of geothermal energy to generate electricity
used to create heat, grow crops, raise fish, and spin turbines by taking out dry, wet steam or hot water
Hydrogen
negative net energy
more efficient and requires less maintenance
Biodigesters
produce methane and produces heat in the atmosphere
produces biogas and solis used as fertilizers which are organic material broken down by bacterias
Biomass
used to generate heat and electricity
biofuels: biomass into liquid for motor vehicles
ethanol comes from plants and its wastes
easily transported and stored. Found anywhere
causes ecological damages and air pollution
algae can be used because it contains natural oils and can create energy faster than biofuels
biodiesel comes from vegetable oils
Hydraulic energy
the usage of water to produce energy
risk to store and transport
kinetic energy comes from flowing rivers
take energy from tides and waves