Ocean thermal energy conversion simple english wikipedia. Ocean thermal energy conversion otec is a way of getting useful energy from the worlds oceans. Two major ocean thermal technologies are of interest in hawaii. Ocean thermal energy conversion otec is considered as a promising resource of energy in the future. Ocean thermal energy conversion research papers academia. Ocean thermal energy corporation ote builds and operates clean hydrothermal energy plants worldwide using the proven technologies of ocean thermal energy conversion otec and seawaterlake water air conditioning swac. Most technologies to tap this huge resource are still in the developmental stages. Ocean thermal energy conversion otec by ajer issuu. Ocean thermal energy, ask latest information, ocean thermal energy abstract,ocean thermal energy report,ocean thermal energy presentation pdf,doc, ppt,ocean thermal energy technology discussion,ocean thermal energy paper presentation details,ocean thermal energy, ppt, pdf, report, presentation, source code, abstract, seminar, project idea, seminar topics, project, project topics,latest. There is a multitude of other factors to be considered before it can be said that a. New idb report on ocean energy potential in barbados the interamerican development bank idb has published a report on the potential of ocean energy in barbados. Closed cycle ocean thermal energy conversion systems use a working fluid with a low boiling point, ammonia for example, and use it to power a turbine to generate electricity.
Ocean thermal energy conversion otec generates electricity indirectly from solar energy by harnessing the temperature difference between the sunwarmed surface of tropical oceans and the colder deep waters. The governor of hawaii, david ige, flipped the switch to activate the plant. Otec,ocean thermal energy conversion is an energy otech,ocean thermal energy technology that converts solar that converts conversion is an energy technology radiations to electricalto electric power. Actual ocean thermal energy conversion efficiency at any location is likely to be around 3 %. Makais ocean thermal energy conversion otec power plant. Welcome to presentation on seminar topicwelcome to presentation on seminar topic ocean thermal energy conversionocean thermal energy conversion otecotec govt. Otec plants pump large quantities of deep cold seawater and surface seawater to run a power cycle and produce electricity. Ocean thermal energy conversion makai ocean engineering. Both rely on the fact that the deep ocean is significantly colder than the tropical surfacenearly 40 degrees fahrenheit colder.
The suns heat warms the surface water a lot more than the deep ocean water, which creates the oceans naturally available temperature gradient, or thermal energy. Ocean thermal energy conversion otec types renewable. Ocean thermal energy conversion otec is a process that can produce electricity by using the temperature difference between deep cold ocean water and warm tropical surface waters. Ocean thermal energy conversion otec uses the temperature difference between cooler deep and warmer shallow or surface seawaters to run a heat engine and produce useful work, usually in the form of electricity. Jan 29, 2018 cbse class 10 science sources of energy we will understand how the temperature difference between the water levels of the ocean can be used to generate electricity. First introduced in 1881, otec has been described as an effective and renewable energy source. Wave energy conversion and ocean thermal energy conversion. As the ocean covers 70% of the earth surface, this makes it the worlds largest solar energy collector. Find out information about ocean thermal energy conversion. Many oceans are very deep and the water at depths of 1,000 meters can be around 5 c. There are many benefits to otec, but there is also some cons. Ocean thermal energy conversion, or otec, uses seawater to turn solar energy into electricity. Warm seawater is taken in from the surface of the oceans and cold water from the deep at 5 o. Ocean thermal energy conversion is a process using the heat energy that is stored in the ocean.
Cost effective otec ocean thermal energy conversion. What is otec ocean thermal energy conversion otec is a marine renewable energy technology that harnesses the solar energy absorbed by the oceans to generate electric power. As sunlight falls on the oceans, its energy is absorbed by seawater. Find out information about ocean thermalenergy conversion. Ocean thermal energy conversion otec is a means of converting into useful energy the temperature difference between surface water of the oceans in tropical and subtropical areas, and water at a depth of approximately m which comes from the polar regions. Apr 15, 2020 welcome to the okinawa prefecture deep sea water ocean thermal energy conversion otec demonstration facility. An ocean thermal energy conversion power plant built by makai ocean engineering went operational in hawaii in august 2015. The oceans collect a huge amount of the worlds heat energy. Otec international llc a leader in ocean thermal energy conversion commercialization author. The practical problem is finding a way to extract that energy and make it available for human use. Ocean thermalenergy conversion article about ocean thermal. Welcome to the okinawa prefecture deep sea water ocean thermal energy conversion otec demonstration facility. It is one of the renewable energy resources that do.
Benefits of ocean thermal energy conversion energy 2. Ocean thermal energy conversion otec the worlds oceans constitute a vast natural reservoir for receiving and storing heat energy from the sun. Overall, ocean thermal energy conversion is a great possible way to produce clean renewable energy without any harmful emissions. The sun shines on the oceans of the world and in the hot parts near the water at the seas surface can be quite warm, sometimes as high as 30c. This would be followed, in 20 to 30 years, with otec factories deployed along equatorial. Principle and preliminary calculation of ocean thermal energy. Energy conversion takahashi, patrick, trenka, andrew on. Otec can operate with a very high capacity factor and so can operate in base load mode the denser cold water masses, formed by ocean surface water interaction with cold atmosphere in. Floating pilot units with capacities of the order of 10 to 40 mw will be in operation by 1985, according to present development plans. The warm seawater vaporizes the fluid in the heat exchanger which then turns the turbines of the generator.
The ocean is a huge storehouse of energythe sun heats the surface, wind creates waves, and tidal forces exerted by the sun and the moon create tidal fluxes. A signircant fraction of solar radiation incident on the ocean is retained by seawater in tropical. This is referred to as otec for ocean thermal energy conversion. Ocean thermal energy conversion otec uses the ocean thermal gradient between cooler deep and warmer shallow or surface seawaters to run a heat engine and produce useful work, usually in the form of electricity.
Otec uses the heat differences between deep and shallow ocean waters to evaporate a fluid to run a steam turbine and generate. Ocean thermal energy energy is available from the ocean by tapping ocean currents using the ocean as a heat engine tidal energy wave energy energy from ocean currents ocean currents flow at a steady velocity place turbines in these currents like the gulf stream that operate just like wind turbines water is more than 800 times denser than air, so for the same surface area, water moving 12. Otec systems use the oceans natural thermal gradientthe fact that the oceans layers of water have different temperaturesto drive a powerproducing cycle. Two major ocean thermal technologies are of interest in. The use o slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Wave energy conversion and ocean thermal energy conversion potential in developing member countries. Oceans act as incredibly large solar energy collectors, absorbing about 80% of the suns energy. An ocean thermal energy conversion otec is a system of converting thermal energy in electricity by using the temperature difference between warm water at the surface of the ocean and cold water. Of all the new ocean energy sources, otec ocean thermal energy conversion seems to offer the best medium term prospects. Join us in exploring this exciting path into the future.
Ocean thermal energy conversion karen anne finney university of guelph, guelph, ontario, n1g 2w1, canada ocean thermal energy conversion otec is a process that employs the natural temperature difference between the surface and the depths of the ocean. Ocean thermalenergy conversion article about ocean. Ocean thermal energy conversion otec makes use of the temperature differences between the deep cold and relatively warmer surface waters of the ocean to generate a constant, clean source of electricity. Otec ocean thermal energy conversion works by using the temperature gradients found in large bodies of water, where the temperature of water found on the surface is significantly higher than the cold water found deeper down. Ocean thermal energy conversion technology britannica.
Due to the high heat capacity of water, the, water near the surface is maintained at significant higher temperatures than water at greater depth. This is the first true closedcycle ocean thermal energy conversion otec plant to be connected to a u. Ammonia will be used as the working fluid in this cycle. Ocean thermal energy conversion otec technology uses a turbine generator to create renewable energy from the temperature difference between cold, deep seawater circulating in the ocean and surface seawater warmed by the sun. Noaa office for coastal management about the office. Otec is not like wind power or solar power which are intermittent, because the technology can operate on a 247 basis. Otec systems use the ocean s natural thermal gradientthe fact that the ocean s layers of water have different temperaturesto drive a powerproducing cycle. The working fluid in such a cycle will need to have a low boiling point. A marine renewable energy production system for tropical areas ocean thermal energy conversion unlimited ocean thermal.
Download the seminar report for ocean thermal energy. May 05, 2017 ocean thermal energy conversion otec is considered as a promising resource of energy in the future. Cbse class 10 science sources of energy we will understand how the temperature difference between the water levels of the ocean can be used to generate electricity. Ocean thermal energy conversion energy and the environment. The pros are otec is fuel free, has a low environmental impact, can supply pure water for both drinking and agriculture, can supply refrigeration and. This is surprising since otec seems to be especially wellsuited for remote. Implementation otec utilizes the temperature difference that exists between deep and shallow waters within 20 of the equator in the tropics to run a heat engine as the oceans are continually heated by the sun and cover nearly 70% of the earths surface, this temperature difference contains a vast amount of solar. This means that every day, the oceans on our planet absorb solar energy equivalent to 250 billion barrels of oil, and if we could convert 0. The oceans are in one sense, therefore, a huge storage tank for solar energy. If a pipe is put down into the ocean we can bring the cold. Abstract ocean thermal energy conversion otec is the use of a high surface temperature of the water with the low temperature of the water at a certain depth thus creating a heat engine.
Ocean thermal energy conversion otec sea solar power uses the basic technology known as ocean thermal energy conversion, or otec, which was invented in 1881 by a french scientist years ahead of his time by the name of jacque arsene darsonval. Here youll find a collection of information on this historic project, as well as information on otec technology, news, and posts from facility staff. Ocean thermal energy conversion otec, form of energy conversion that makes use of the temperature differential between the warm surface waters of the oceans, heated by solar radiation, and the deeper cold waters to generate power in a conventional heat engine. Otec, or ocean thermal energy conversion, is an energy technology that converts solar radiation to electric power. Ocean thermal energy conversion for many years, scientists have been aware of one enormous reservoir of energy on the earths surface.
It is one of the renewable energy resources that do not arise any indeed harmful impact on our. Ocean thermal energy conversion development update. This constancy differs from the output of renewable resources such as wind and wave energy that sometimes produce intermittent electricity. It relies on the oceans thermal gradient the temperature decline from the sunwarmed waters on the surface to the cold waters found at great depths. The conversion of energy arising from the temperature difference between warm surface water of oceans and cold deepocean current into electrical energy or. Ppt ocean power powerpoint presentation free to download. Otec news reports on ocean thermal energy conversion, seawater air conditioning and related technologies. Helps produce fuels such as hydrogen, ammonia, and methanol produces base load electrical energy produces desalinated water for industrial, agricultural, and residential uses is a resource for onshore and nearshore mariculture operations provides airconditioning for buildings provides moderatetemperature refrigeration has significant.
In order to produce power with the low temperature range, a working fluid with low boiling point is used. Apr 23, 2018 a number of island states in the caribbean and pacific have ocean thermal energy conversion otec resources within 10 kilometres of their shores, though projects remain few and far between. Apr 11, 2015 otec or ocean thermal energy conversion, is a renewable energy technology that converts solar radiation to electric power by use of the world oceans. Makai ocean engineerings ocean thermal energy conversion otec power plant is the worlds biggest operational facility of its kind, with an annual power generation capacity of 100kw, which is sufficient to power 120 homes in hawaii. Ocean thermal energy conversion otec types renewable energy. During the last few years, however, new options for energy out at sea have been introduced. View ocean thermal energy conversion research papers on academia. Ocean thermal energy conversion renewable energy caribbean. Ocean thermal energy conversion otec sea solar power. When otec is implemented in 5 % of the earth surface area which is 7% of the ocean covered area,less than 15 % of the tropical ocean area, the 3% conversion efficiency will be sufficient to provide energy at 0. Principle and preliminary calculation of ocean thermal.
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