7.4 Renewable energy
transition to renewable energy
improve energy efficiency
industries and power plants
energy efficenty and energy conservation
fossil fuels are responsible fore the three worlds largest environmental problems
market prices do not include these environmental effects
climate change
ocean acificication
air pollution
energy priorities
decreasing our dependence on nonrenweable energy
relying more on a mix of renewable energy
improving energy efficency and reducing energy waste
economical benefits
enviormental beneftis
help keep climate change in control
slow increase in ocean acidity
save lives by sharpley reducing air pollution
save money
create jobs and business opportunities
biggest source of renewable energy
we waste a lot of energy and money
no energy device operate at 100% efficency
energy efficency is a measure of hoe much useful work we can get from each unit of energy used
impriving energy efficiency means more energy goes into the form needed so less energy is needed to provide te same amount of useful work
we can cut energy waste by adapting oour behavior and choices
energy conservation means reducing or eliminating the unnecessary wasting of energy
unavoidable loss as a reult of inefficent technology
avoidable loos that happens as a result of carelessness or ignorance
combustion engine
nuclear, coal and natural gas power plants
huge data center: electronic servers processing and storing information
transportation
building
power plants and industry
cogeneration
upgrade the electrical grid to an energy efficient smart grid
reduce reuse recyle
electric and hybrid vehicles
mass transit systems- discourage car use
CAFE vehicle fuel efficiency targets
use energy-efficient appliances
switch off unused energy-consumers (especially computers and servers)
insulate buildings for more efficient heating and cooling (isolate inside from outside)
utilities: power planys
industries: all facilities and equipment used to produce, process, or assemble goods
industries that use the most energy are thoese that produce petroleum, chemical, cement, steel, aluminum, and paper and wood products
variable-speed electric motors: run at the minimum speed needed for each job
to produce two useful forms of energy, (electricity and heat) from the same fuel source
a smart grid enables power companies and consumers to connect to and buy electricity produced by homes and businesses from, wind, solar and other renewable form of energy
gasoline electci hybrid cars (gasoline powered engine) (battery powered electric motor)
plug in hybrid electric vehicle (first electricity then gasoline)
all- electric vehicle (battery only)
reducing weight of a vehicle can also improve fuel efficiency
individual cars
raise taxes on gasoline
give tax breaks
biggest energy cost
cooling
electronics and appliances
heating