Date post: | 30-Dec-2015 |
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Disadvantages
Flaws in our brilliant ideas…
By: Jessica
FOSSIL FUELS
FOSSIL FUELS
+ Contributes to Global Warming
+ Acid rains
+ Availability of fuels
+ Prices may be inconsistent
NUCLEAR (URANIUM FISSION)
NUCLEAR (URANIUM FISSION)
+ Scarcity + Non-renewable
resource+ Workers are in danger
if work too long
+ H2O used for cooling becomes radioactive
+ Mining to getting U+ Wastes need to be
disposed of somewhere“Natural RADON
Water 25¢”
NUCLEAR (PLUTONIUM FISSION)
NUCLEAR (PLUTONIUM FISSION)
+ Need place for wastes+ Could lead to uncontrolled reaction+ More radioactive, compared to
Uranium
NUCLEAR (FUSION)
NUCLEAR FUSION
+ Difficult process; many countries gave up
+ Short reaction; won’t produce much+ Need place for wastes + "Some optimal reactors require rare
fuel, like He-3”
SOLAR (PHOTOVOLTAIC)
SOLAR (PHOTOVOLTAIC, OR PV)
+ Used only during day
+ Affected by:– cloudy day– rainy day
+ More costly, when compared to Solar Heating Panel
SOLAR (SOLAR HEATING PANEL)
SOLAR HEATING PANEL
+ Used only during the day+ Affected by:
– cloudy day– rainy day
+ Need space+ Inefficiency from converting solar energy
! Photovoltaic Cell: Sun → Electricity! Solar Heating Panel: Sun → Directly
warms water
HYDROELECTRIC
HYDROELECTRIC
+ Affect mobility of fish (especially during migration) 16million → to 30,000 fish!
+ Supersaturation of air into water+ Formation of Scour holes+ Land lost, and people must move from that area+ Can lead to disasters: + Only used in areas near water
WHAT’S A SCOUR HOLE?
Effect similar to Bridge Scour, the constant force of water hitting the bottom creates these
holes, and it could make the dam collapse. Water is indeed powerful.
WIND
WIND
+ Wind may be too weak+ Yields less energy, when compared
to other methods+ Turbines are costly+ Takes space+ Contributes to noise pollution
$35,000-$50,000
is the cost of a turbine
that would power an average home in America.
WAVE
WAVE
+ May be too weak; need to be strong enough
+ Sustainable site needed
COST, COST, COST… BUT REALLY HOW MUCH IS A
LOT?
Power Plant
Wind
Coal
Natural Gas
48 50 52 54 56 58 60
59.3
55.6
53.1
52.5
Cost of obtaining electricity through dif-ferent methods
Cost ($) / MWH
THANK YOU FOR
WATCHING!