Transcript Energy Sources renewable vs non

Energy Sources renewable vs nonrewnewable
• Renewable – can’t be
exhausted
• Solar
• Geo-thermal
• Tidal
• Wind
• Hydro
• Non-renewable-can be
exhausted
• Fossil fuels (oil, coal etc)
• Nuclear
How much do we use?
• World energy
consumption
• US energy consumption
How much do we use?
How much do we use?
• Almost 95% of the energy we use comes from
non-renewable energy sources!
• One of these days we will run out, and then
what?
• What are some short and long term answers
to this question?
Fossil fuels
FOSSIL FUELS
• Carbon or hydrocarbons (a compound made of hydrogen
and carbon) found in the earth’s crust
• Formed from the bacterial decay of plant and animal life in
ancient (a few hundred million years ago) seas.
• The decomposing material was covered with mud and
sediment
• This increased the pressure and temperature on the
material and deprived it of oxygen.
• A variety of hydrocarbon molecules are created in solid,
liquid and gas states.
• The gas and liquid could travel through the porous rock and
collect in geological traps (rock features that prevent
further movement of the hydrocarbons).
Petroleum traps
Why is there oil in Texas?
A little history….
• 1859 Colonel Drake(a title he adopted to impress
the locals) first drilled for oil and found it in
Titusville, PA.
• Area was already known to have many active
surface springs or seeps. Oil had been fond by
accident via drilling for water.
• Other wells were drilled and the oil was refined
into kerosene.
• Oil was soon found in Ohio, Indiana, California
and Texas.
Triumph Hill oil field in PA
What about Kentucky or Tennessee?
Oil in KY
• Well that didn’t really happen but there are
oil fields in KY and TN!
• Largest in KY is Big Sinking, spanning Estille,
Lee, Powell and Wolfe counties.
Current KY oil reserves
US Oil Reserves
All good things must come to and end…..
• It looks like there is a lot left, but it won’t last
very long.
• It takes about 11 years from the time an oil
reserve is discovered until the oil reaches
production.
• Also, the production of any energy resource has
to be economically feasible; it can’t take more
energy to get the energy produced than the
energy itself produces.
• Q∞ denotes the amount of a resource available
for all time, until it is exhausted
M.K. Hubbart: The Nostradomus of
petroleum
• Predicted Q∞ to be 165 X 109 barrels of oil for
the US in 1956 (this did not include Alaska or
other “non-conventional sources).
• Much smaller value than his contemporaries
and he predicted that US oil production would
peak between 1966 and 1971 and then fall off,
independent of anything the oil industry did.
• Not a popular prediction, but it rang true, US
oil production peaked in 1970.
Hubbart Curve
Oil production around the world
World Oil Production