G5 Renewable Energy

Renewable
Energy Group 5
Catama, Julius Ryan T. Gallardo, Mason H.
Navan, Zenekiah A. Numbanal, Khyla D.
Picar, Risha Jayne G. Tiam, Jares Jade C.
• Pollution
• All fossil fuels contribute
greenhouse gas emissions.
Reasons to Coal pollution causes acid
transition precipitation and human
to health issues. Oil can spill.
renewable • Supply
• Oil and natural gas supplies
will only last about 50 years
at current usage rates. 2
• Cost - Initial investment costs
may be very high.
• Intermittency - May not be
productive 24/7 like fossil fuels
and nuclear. Challenges
• Environmental Impact - to the
Renewables are mostly pollution- Renewable
free but still impact ecosystems. Transition
• Geography - Certain parts of the
earth have better availability for
renewables than others.
3
The biggest challenge in
transitioning is replacing each
application of fossil fuels.
Ex. Heat – Natural gas
Transportation – Oil,
Electricity Natural gas, coal
Nonconventional fossil fuels are

resources that are more difficult/costly
to extract.
4
Hydrokinetic Energy
1 see Hydro-electric plants
⊹ Hydrokinetic energy is generated by the movement of water.

× Rivers, ocean currents, and tides.
• Hydroelectric power is continuous

• Pumped storage hydropower uses a second upper
reservoir to make production adjustable.
• Surplus: Water is pumped into the upper reservoir.
• Deficit: Water flows out of the upper reservoir
through the turbine.
Dams
- use is a significant water drop
to move a hydraulic turbine.
They are typically
built in barrages and
reservoirs.
Tidal Power Plants
- In which the movement of
water caused by high and low
tides drives a turbine,
Which produces electricity by
means of a generator.
Wave Power Plants
uses the force of waves
instead of tides.
POINT
ABSORBERS
OSCILLATING Wave Power Plants
WATER COLUMN uses the force of waves
instead of tides.
ATTENUATOR
Wave Power Plants
uses the force of waves
instead of tides.
Overtopper
2 Wind EnergyEnergy from moving air.
⊹ Wind farms are clusters of wind turbines that generate large amounts
of power.
• Wind turbines have three large rotor blades that spin with the wind.
• Attached to a generator that immediately converts that energy to
electricity.
• Able to change direction to follow the wind.
• Brakes halt the rotors when a component malfunctions or wind speed is
too high.
• Each wind turbine produces enough power to supply about 900 average
homes 1
1
3 Geothermal
Energy from the Earth’s heat.
⊹ Geothermal plants generate steam by pumping hot

water from deep below the Earth’s surface.
⊹ Geothermal plants have massive upfront costs.
⊹ Small amounts of sulfur dioxide and carbon dioxide are
released.
⊹ Extracting steam and hot water from underground can
trigger earthquakes.
4 Solar Photovoltaic and parabolic.
Solar power is energy from the sun that is

converted into thermal or electrical
energy.
2 Ways How to Collect Solar Energy
• Parabolic solar collection uses curved mirrors to
reflect sunlight to a heat collector.
• Photovoltaic cells directly convert solar energy to
electric current, without any moving parts.
• Parabolic solar collection uses curved mirrors to reflect
sunlight to a heat collector.
• Photovoltaic cells directly convert solar energy to electric
current, without any moving parts.
5
Comparing Energy Metrics
Hydroelectric plants must Wind turbines have the
be built along river greatest potential in areas
courses with significant with few geographic wind
elevation or tidal barriers.
differences.
Renewables
Geothermal power has Solar power has the
the greatest potential greatest potential closer
along active tectonic plate to the equator, in
boundaries – volcanically naturally arid climates.
active areas.
6 Managing Fossil Fuels
Renewable Fuel Sources and How to lessen the use of Fossil Fuels
Powering vehicles, planes, and ships.
Types of Fuel Sources other than Fossil Fuels
• Biofuels are fermenting plant matter
• Fuel cell vehicles use hydrogen gas as a
source of energy.
• Hybrid vehicles have both a combustion
and electric engine to improve efficiency.
• All-electric vehicles can be recharged
from any electricity source.
6 Managing Fossil Fuels
Renewable Fuel Sources and How to lessen the use of Fossil Fuels
How to Save Energy

• Reduce Energy Consumption
• Switch to Renewable Energy
• Support Renewable Energy Policies
• Invest in Energy Efficiency
• Change Transportation Habits
Thank You!
References
Renewable Energy Powerpoint Lecture. (n.d.).
https://
www.aurumscience.com/environmental/12_ren
ewable/lecture.html
Gumayagay, R. (n.d.). PRINCIPLES OF

ELECTRICITY [Slide show; Powerpoint].

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Renewable

Nonconventional fossil fuels are

⊹ Hydrokinetic energy is generated by the movement of water.

• Hydroelectric power is continuous

⊹ Geothermal plants generate steam by pumping hot

Solar power is energy from the sun that is

How to Save Energy

Gumayagay, R. (n.d.). PRINCIPLES OF

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