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Renewable, Non-Renewable and Replenishable Resources

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Valerio Franchi

on 2 February 2015

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Transcript of Renewable, Non-Renewable and Replenishable Resources

Different kinds
of Resources
A renewable resource: can be totally replaced or
is always available naturally, or that is practically inexhaustible.

A non-renewable resource: raw materials that, once consumed, cannot be replenished through
a natural process. Opposite of renewable
resources.

Replenishable Resources: capable of being
used over and over, again and are capable of regeneration. They are in-exhaustible.




Non-Renewable: Nuclear Energy
Nuclear energy originates from the splitting of uranium atoms in a process called fission. Fission releases energy that can be used to make steam, which is used in a turbine to generate electricity.

Uranium is a nonrenewable resource that cannot be replenished on a human time scale. Uranium is extracted from the earth through traditional mining techniques or chemical leaching.

In the plant’s nuclear reactor, neutrons from uranium atoms collide with each other, releasing heat and neutrons in a chain reaction. This heat is used to generate steam, which powers a turbine to generate electricity. Nuclear power generates a number of radioactive by-products, including tritium, cesium, krypton, neptunium and forms of iodine.
PROS AND CONS
PROS CONS

1) provides constant source 1) in terms of fatalities
of energy (not limited by respect to other power
weather) plants it ranks second to
2) very high level of productivity hydroelectric dams
3) none of disasters were caused 2) meltdown of 500MW reactor
by system errors but only by 30 ml from city would provoke
human negligence/error immediate deaths of 45,000
4) power plants can be made injury of 70,000 people, and
in any environment; technology 17$ billion costs
to make it is readily available 3) Each nuclear reactor each year
and has low operation costs produces 20-30 tons of high
once constructed level nuclear waste
4) if it is not shielded, it
delivers a lethal dose in
seconds and becomes a
hazard for 12,000 generations

Replenishable:
Groundwater Pump System
Bibliography
"Geothermal Energy Pros and Cons - Energy Informative." Energy Informative. N.p., n.d. Web. 02 Feb. 2015. <http://energyinformative.org/geothermal-energy-pros-and-cons/>.

"Ground Water Source (Open Loop)Heat Pump Systems." Ground Water Source (Open Loop)Heat Pump Systems. N.p., n.d. Web. 02 Feb. 2015. <http://bge.apogee.net/ces/library/tcwshp.asp>.

J., Samuel. Nuclear Power – Pros and Cons (n.d.): n. pag. Web. 2 Feb. 2015.

"Nuclear Energy." EPA. Environmental Protection Agency, n.d. Web. 02 Feb. 2015. <http://www.epa.gov/cleanenergy/energy-and-you/affect/nuclear.html>.

"What Are Non-renewable Resources? Definition and Meaning." BusinessDictionary.com. N.p., n.d. Web. 02 Feb. 2015. <http://www.businessdictionary.com/definition/non-renewable-resources.html#ixzz3Q1CwXBnf>.

"What Are Renewable Resources? Definition and Meaning." BusinessDictionary.com. N.p., n.d. Web. 02 Feb. 2015. <http://www.businessdictionary.com/definition/renewable-resources.html#ixzz3Q1CHG03O>.
Renewable:
Geothermal Energy
Below the Earth's crust there is magma, which continuously produces heat mostly from the decay of uranium and potassium (radioactive elements). Seismically active locations around the world are where tectonic boundaries meet or Earth's crust it thin enough to let heat pass. However, supplies of milder heat can be found anywhere on Earth, even though the majority of the quantity is found in seismically active locations.

Geothermal power plants exploit naturally occurring "hydrothermal convection" systems, where cooler water seeps into Earth's crust, is heated up, and then rises to the surface. Once this heated water is forced to the surface, hot water and heat are pulled up through wells and used to drive electric generators. Geothermal power plants drill their own holes into the rock to more effectively capture the steam. Once heat has been used, it is pumped into a condenser, which transforms it into water, and is then returned in the form of warm water to prolong the life of the underground source.
Renewable, Non-Renewable and Replenishable Resources
PROS AND CONS
PROS CONS

1) Environmentally friendly 1) in extreme cases, power
(does not cause lots of pollution) plants can cause earthquakes
2) reservoirs are naturally 2) power plants and heating and
replenished cooling systems have high costs
3) small footprint on land (can 3) very location specific
be partially built underground) 4) this energy is only sustainable
4) high productivity compared to only if reservoirs are maintained
other renewable energies 5) high level of greenhouse gases
5) used for heating/cooling and toxic metals in reservoirs
households can be emitted to the surface
6) getting this energy does
not involve fuels so stable
electricity prices and less
cost fluctuations
PROS AND CONS
PROS

1) Open loop systems have less loss in heat transfer
2) Open loop systems have lower heat pump energy costs
CONS

1) Heat pump, disposal wells can be costly,
2) Water qualities could change over time to poor quality and cause problems e.g. corrosion
3) Costs of drilling the well and damage environment
4) Open-loop and closed-loop systems could bring outside water into the unit. This can lead to clogging, mineral deposits, and corrosion in the system.
5) Open-loop systems require a large supply of clean water in order to be cost effective.
6) Limit water in the coastal areas, e.g lakes, rivers, streams, etc.
7) Each unit requires precise electrical and plumbing service.
8) Backup heat sources are required
in cooler climates.
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