Introducing
Your new presentation assistant.
Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.
Trending searches
Example: Tidal Barrage.
These have large capital costs (~$700,000) and long construction times. However, its balanced by 100 years of work for the actual barrage structure and 40 years for the equipment. Also has low operating costs. Once the technology has matured, its estimated that the cost could be 10 cents per kilowatt-hour.
Environmental: disrupt the migration of fish and possibly kill them. But studies show that the damages would be minimal.
The technology is just in its nascent (beginning) stages. Main types include, point absorber, attenuators (floats), Cf devices (OWC), tapered channel, and over-topping device
Social and Environmental Impacts (wave energy)
The tidal energy is just in the developmental stages. Even though there are some generators in use, they are not world wide yet. There are three types of tidal generators.
Point Absorber: Utilizes wave energy from all directions at a single point. The waves act as a pump that pressurizes the internal fluid and drives a turbine.
Over-topping device
Maintenance of the devices have possibilities that harmful mechanical fluids can leak out
Social: Fishermen, shipping vessel operators, recreational boaters, and coastal citizens will have a say in what goes where because they can be affected along with the marine life.
Oscillating Water Column
Over-topping Device: A floating reservoir that breaks waves over its walls which generates pressure necessary to turn a hydro turbine as the water flows out the bottom back to the sea.
Oscillating Water Column (OWC): Uses the rise and fall of water in a shaft to generate energy. The water drives air out of the top of the shaft, powering a air-driven turbine.
Floats
Fungibility is easily described as replacing something so... tidal energy can replace the coal and oil burning to reduce pollution and if there was a nuclear reactor meltdown, we would probably start to glow. With tidal energy, we won't glow. ^-^
Tidal Turbines A.K.A Tidal Streams: Turbines that are placed in shallow waters. That rely on the kinetic energy of water to power them.
Floats: Use the rise and fall of the ocean swells (waves) to drive hydraulic pumps.
Tapered Channel: Can be located on or off shore. concentrates waves and drives them into an elevated reservoir where it is generated into energy.
Tappered Channel
Tidal Barrages: Large dams that the water can flow over the top or through the turbines. When the tides begin to come in the water is channeled into a large basin behind the dam, this dam holds the potential energy from the tide. When the tide recedes the potential energy is converted into mechanical energy as the water is released through large turbines that create electrical power through the use of generators.
Tidal Lagoon: a minimal threat to fish, even the little fish can swim through and escape large predators. Birds would most likely flock to the area too. However that can block off ecosystems and might cause fish to migrate and nest in different areas.
Tidal Lagoons: Like the barrages, the lagoons are partially closed off and the water flows through the turbines. However they are placed in artificial ecosystems
Tidal Turbines: the blades may strike a fish or the high speed water may push organisms near or through the devices. They may also disrupt the tides, however, the turbines move slowly which gives a less threat of a threat to the fish.
Tidal Barrage: may change the shoreline within the area which effects the ecosystem depending on the tidal flats. There may be less flushing of the bay which there is less saltwater and may cause death of the fish which are vital to birds and mammals. Migrating fish may not be able to access breeding streams and may attempt to pass through the turbines (in which they become sushi). There is a actual name for fish being sucked into a turbine, entrainment, I like being made into sushi better (Andrew).
In efficiency, 90% of hydro-power is able to be converted over the minor 50% that is able to be converted from fossil fuels. Certain projects have been able to generate up to 5 megawatts of energy, this is enough to power up to 1,200 homes with this clean tidal energy.
Hydrokinetic engery is a possible new source of energy. Water being used for many years can now be used to power many more homes and can improve the pollution issue that our world faces. The tides and waves will always be around and usable and predictable (tides). Hopefully, one day the world will use tidal and wave energy. And for people who like sushi, there may be more of that...
Hydrokenetic Energy is energy generated by the movement of a body of water. The earths tides, waves, ocean currents and free flowing rivers contain the untapped power. In-stream hydrokinetic Energy, Marine Hydrokenetic Energy, Wave Energy, and Tidal Energy all harness the power of water. However the most used and conversed on is wave and tidal energy.
Questions?
http://science.howstuffworks.com/environmental/earth/oceanography/wave-energy2.htm
McPherson, Sara B. "Tidal Power." Science World/Current Science 23 Mar. 2015: 5. Acedemic OneFile. Web. 13 May 2015.
http://www.c2es.org/technology/factsheet/hydrokinetic
http://worldoceanreview.com/en/wor-1/energy/renewable-energies/
http://www.ucsusa.org/clean_energy/our-energy-choices/renewable-energy/how-hydrokinetic-energy-works.html#
http://www.green-mechanic.com/2014/06/tidal-lagoon.html
http://www.reuk.co.uk/Severn-Barrage-Tidal-Power.htm
http://www.alstom.com/press-centre/2013/7/alstoms-tidal-turbine-reaches-1mw-in-offshore-conditions/
http://www.energybc.ca/profiles/tidal.html
http://www.alternative-energy-tutorials.com/wave-energy/wave-energy-devices.html