Ocean thermal energy conversion research, development, and demonstration act 42 u. Energy conversion takahashi, patrick, trenka, andrew on. 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. Ocean thermal energy conversion otec projects have been around since. Paul rappaport for his encouragement during the initial stages of this work. Ocean thermal energy conversion systems convert the energy available in the temperature gradient of the warm surface. Ocean thermal energy conversion development update. The governor of hawaii, david ige, flipped the switch to activate the plant.
Here youll find a collection of information on this historic project, as. Ocean thermal energy conversion otec is a way of getting useful energy from the worlds oceans. This would be followed, in 20 to 30 years, with otec factories deployed along equatorial. Ocean thermal energy conversion, sometimes referred to as otec, is a form of renewable energy that utilizes the difference in ocean temperature at various depths and converts it to a heat engine. 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. Paper presentation on ocean thermal energy presented by department of mechanical engineering. Ocean thermal energy conversion technology, or otec in short, is a. 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. Otc 21016 economics of ocean thermal energy conversion. 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. 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. Ocean thermal energy conversion makai ocean engineering. Ocean thermal energy conversion, sometimes referred to as otec, is a form of renewable energy that utilizes the difference in ocean temperature at various depths and converts it to a heat. Ocean thermal energy conversion otec is an energy technology that makes use of the oceans temperature difference between the warm surface water and the cold deeper water to drive a turbine connected to a generator to produce electricity.
A project certified by the department of energy doe as a demonstration project is exempt from being required to obtain an otec license from noaa, pursuant to the. Mpee is defined as being sustainable and technically feasible, given todays stateoftheart ocean energy technology. Otec news reports on ocean thermal energy conversion, seawater air conditioning and related technologies. Ocean thermal energy conversion otec is a process or technology for producing energy by harnessing the temperature differences thermal gradients between ocean surface waters and deep ocean waters.
The oceans are in one sense, therefore, a huge storage tank for solar energy. Sea thermal energy conversion otec is a vitality innovation that changes over sun oriented radiation to electric force. The low energy conversion efrciency of otec means that. 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 is a otec process that generates power using. The ocean thermal extractable energy visualization oteev project focuses on assessing the maximum practicably extractable energy mpee from the worlds ocean thermal resources. It relies on the oceans thermal gradient the temperature. Closed cycle ocean thermal energy conversion otec december 15, 2009 leave a comment go to comments darsonvals original concept used a working fluid with a low boiling point.
Predictable and continuous, the energy produced in this way is particularly environmentally friendly and decarbonised. Ocean thermal energy conversion otec paper presentation. Ocean thermal energy conversion otec harnesses the difference in temperature between the surface water about 25c and the water at depth about 5c at depths greater than m based on the principle of thermal exchange. 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. The oceans collect a huge amount of the worlds heat energy. Otec international llc a leader in ocean thermal energy. Otec uses the heat differences between deep and shallow ocean waters to evaporate a fluid to run a steam turbine and generate.
Dec 15, 2009 closed cycle ocean thermal energy conversion otec december 15, 2009 leave a comment go to comments darsonvals original concept used a working fluid with a low boiling point, such as ammonia, which is vaporized using the heat extracted from the warm surface water. Ocean thermal energy conversion otec is one of the few. 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. The ocean thermal energy conversion strategies and analysis of current challenges conference paper pdf available september 2007 with 2,763 reads how we measure reads. How will ocean thermal energy conversion help the environment. Otc 21016 economics of ocean thermal energy conversion otec.
This is referred to as otec for ocean thermal energy conversion. Estimates suggest that ocean thermal energy could contain more than twice the worlds electricity demand. Ocean thermal energy conversion technology britannica. Ocean thermal energy conversion otec types renewable energy. Ocean thermal energy conversion is a process using the heat energy that is stored in the ocean. Helps produce fuels such as hydrogen, ammonia, and methanol produces base load electrical energy produces desalinated water for industrial. Mar 01, 2017 paper presentation on ocean thermal energy presented by department of mechanical engineering.
This is the first true closedcycle ocean thermal energy conversion otec plant to be connected to a u. Overall, ocean thermal energy conversion is a great possible way to produce clean renewable energy without any harmful emissions. 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. The low energy conversion efrciency of otec means that more than 90% of the thermal energy extracted from the ocean s surface is wasted and must be rejected to the cold, deep sea water. Cost effective otec ocean thermal energy conversion. It is one of the renewable energy resources that do not arise any indeed harmful impact on our environment.
Introduction history how does it work in real life. 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. And getting a right seminar for submission is really a tough task. Otec is not like wind power or solar power which are intermittent, because the technology can operate on a 247 basis. 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. 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. 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. Ocean thermal energy conversion energy and the environment.
Actual ocean thermal energy conversion efficiency at any location is likely to be around 3 %. In order to produce power with the low temperature range, a working fluid with low boiling point is used. This report describes the ocean thermal resource and the conventional methods for. The energy source of otec is abundantly available, free and will be so for as long as the sun shines and ocean currents exist. 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. 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. The ocean contains enoughenergy power all of the worlds otec is a way to generateelectrical needs. Ammonia will be used as the working fluid in this cycle. Ocean thermal energy conversion, or otec, uses seawater to turn solar energy into electricity. 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. Wave energy conversion and ocean thermal energy conversion potential in developing member countries. Ocean thermal energy conversion for many years, scientists have been aware of one enormous reservoir of energy on the earths surface. The sun shines on the oceans of the world and in the hot parts near the water at the seas surface can be. View ocean thermal energy conversion research papers on academia.
This makes it necessary for us to give it a closer look. Pdf the ocean thermal energy conversion strategies and. Ocean thermal energy conversion climate technology centre. Tt documents work done by the seri materials, systems analysis, and solar thermal conversion branches on task 3127.
During the last few years, however, new options for energy out at sea have been introduced. 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. Join us in exploring this exciting path into the future. 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. Of all the new ocean energy sources, otec ocean thermal energy conversion seems to offer the best medium. Process and technology status ocean thermal energy conversion. Ocean thermal energy conversion linkedin slideshare. Ocean thermal electric conversion otec is a kind of renewable energy technology that relies on solar energy that is absorbed by the ocean to generate electric power. Ocean thermal energy conversion renewable energy caribbean. Otec plants pump large quantities of deep cold seawater and surface seawater to run a power cycle and produce electricity. At one point, we all have to make ppt of any topic and submit its report.
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. Otec an attractive energy solution renewable energy a catalyst for economic growth wind, solar, geothermal, biomass, hydropower no single technology provides an ideal solution otec advantages baseload power 24 hoursday, 365 days a year high operating capacity reliable and consistent. Download the seminar report for ocean thermal energy. The organizers of the 8th international otec symposium, scheduled for october 2223, 2020 in cancun, have released a website for this years event. Ocean thermalenergy conversionotec utilizes the worlds largestsolar radiation collector theocean. Apr 15, 2020 welcome to the okinawa prefecture deep sea water ocean thermal energy conversion otec demonstration facility. There are two approaches one referred to as closed cycle and the other as open. 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. Ocean thermal energy conversion simple english wikipedia. Ocean thermal energy conversion otec uses the temperature difference between cooler deep and warmer shallow or surface ocean waters to run a heat engine and produce useful work, usually in the. When otec is implemented in 5 % of the earth surface area which is 7% of the ocean covered area,less than 15 %. The heat engine converts this heat energy to a mechanical output. The suns heat warms the surface of the ocean and this heat is used to vaporize a liquid that has a lower boiling point than water, and generate high pressure, which is used to. Here youll find a collection of information on this historic project, as well as information on otec technology, news, and posts from facility staff.
Scvh6hwivbiaaaaaaaadn0l5plcrhysaks400empirestatebuilding. There are two approaches one referred to as closed cycle and the other as open cycle. As sunlight falls on the oceans, its energy is absorbed by. 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. One method of extracting this energy is ocean thermal energy conversion.
As sunlight falls on the oceans, its energy is absorbed by seawater. Principle and preliminary calculation of ocean thermal. Wave energy conversion and ocean thermal energy conversion. 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. Ocean thermal energy conversion produces energy from temperature differences in ocean waters.
Ocean thermal energy conversion otec is considered as a promising resource of energy in the future. Ocean thermal energy conversion otec uses the temperature difference between cooler deep and warmer shallow or surface ocean waters to run a heat. 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. Oceans act as incredibly large solar energy collectors, absorbing about 80% of the. Otec,ocean thermal energy conversion is an energy otech,ocean thermal energy technology that.
Noaa office for coastal management about the office. 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. Ocean thermal energy conversion research papers academia. Ocean thermal energy conversion otec types renewable. There are many benefits to otec, but there is also some cons. Ocean thermal energy conversion otec is a marine renewable energy technology that harnesses the solar energy absorbed by the oceans. Otec frameworks utilize the seas regular warm slopethe way that the seas layers of water have distinctive. 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.
Technical readiness of ocean thermal energy conversion otec. The low energy conversion efrciency of otec means that more than 90% of the thermal energy extracted from the oceans surface is wasted and must be rejected to the cold, deep sea water. Sumit thakur mechanical ocean thermal energy seminar and ppt with pdf report. The working fluid in such a cycle will need to have a low boiling point.
The types of ocean thermal energy conversion systems include closed, open, and hybrid. Ocean thermal energy conversion otec uses the ocean thermal gradient between cooler. Benefits of ocean thermal energy conversion energy 2. Potential environmental impacts and fisheries christina m comfort, m. Many oceans are very deep and the water at depths of 1,000 meters can be around 5 c. 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. Electricity generation by the ocean thermal energy. 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. An assessment of the performance and potential of otec innovation. Principle and preliminary calculation of ocean thermal energy.