Ocean thermal energy corporation ocean thermal energy corporation ote is a company now commercializing ocean thermal energy conversion otec. A turbine fixed at the opening of the dam converts tidal energy to electricity. Sumit thakur mechanical ocean thermal energy seminar and ppt with pdf report. Examining the future of ocean thermal energy conversion. Ocean thermal energy conversion produces energy from temperature differences in ocean waters. The warm seawater vaporizes the fluid in the heat exchanger which then turns the turbines of the generator. This is the first true closedcycle ocean thermal energy conversion otec plant to be connected to a u. We develop and coordinate energy systems that harness natural, hightemperature, highpressure geothermal resources used to generate electricity and clean hydrogen. 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 otec environmental impacts the environmental impact studies from the 1980s concluded that the risks of otec would likely be acceptable, however. Ocean thermal energy otec ocean thermal energy also called as ocean thermal energy conversion otec refers to a method of using the temperature difference between the deep parts of the sea which are cold and the shallow parts of the sea which are cold to run a heat engine and produce useful work. 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.
Ocean thermal energy conversion an overview sciencedirect. Ocean thermal energy conversion otec state of development such that under certain scenarios cost competitive baseload electricity could be produced, cf 0. Technical readiness of ocean thermal energy conversion otec. Electricity generation by the ocean thermal energy. Process and technology status ocean thermal energy conversion otec technologies use the temperature dffierence between warm seawater at the surface of the ocean, and cold seawater at between. Despite enthusiastic projections and promising prototypes, however, a lack of governmental support and the need for risky capital investment have. Wave energy conversion and ocean thermal energy conversion. Ocean thermal energy conversion otec, which uses the oceans. Ocean thermal energy conversion otec uses large flows of warm surface seawater and cold deep seawater to generate clean electricity. Ocean thermal energy the otec resource covers an area exceeding 100 million km2 across tropical oceans.
A signircant fraction of solar radiation incident on the ocean is retained by seawater in tropical. With global warming a certainty, it is imperative that we turn to nonpolluting and renewable sources of energy. Ocean power four activities us department of energy. Pdf ocean thermal energy conversion siddharth garaniya. Ocean thermal energy conversion otec has become a serious contender for development as an economic power generation system for the last decade of this century, since the cost of conventional fuels particularly oil rose during and from 1973. First introduced in 1881, otec has been described as an effective and renewable energy source. Nonconventional sources of energy are turning out to be extremely important sources of energy for mankind. Pdf ocean thermal energy conversion otec ajer research. 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. Otec is a proven technology that produces clean baseload 247 electricity using the temperature differential between warm surface water and cold deep water in the worlds tropical oceans. Although it may seem like an environmentalists fantasy, experts in oceanic energy contend that the technology to provide a truly infinite source of power to the united states already exists in the form of ocean thermal energy conversion otec.
Ocean thermal energy conversion, or otec, uses seawater to turn solar energy into electricity. One such source of energy is ocean thermal energy conversionotec. Ocean energy is a type of renewable energy extracted from the sea, from the sources like marine current, ocean thermal power, tides, salient gradients. Ocean thermal energy conversion otec is considered as a promising resource of energy in the future. The heat stored in the ocean can be converted into electricity by means of a process called. Our goal is to generate competitive and sustainable baseload power through ocean thermal energy conversion otec and attractive energy efficient alternatives to air conditioning through seawater district cooling sdc, as well as affordable potable water, sustainable food production, and economic development opportunities to our customers. The tropical ocean at a typical otec site has two distinct layers. Makais otec work is conducted at the ocean energy research center oerc, located within the natural energy lab of hawaii authority nelha in kailua kona, hawaii. Though there has been relatively little investment and research into ocean thermal energy compared to other renewable energies, the idea of harnessing this energy source is not a new one. At one point, we all have to make ppt of any topic and submit its report. A practical application is found in a system heat engine designed to transform the thermal energy into electricity.
This difference in temperature is exploited to obtain energy in oceanthermalenergy conversion plants. Ocean thermal energy conversion technology britannica. Most technologies to tap this huge resource are still in the developmental stages. Source of energy class 10 notes cbse class 10 help. Ocean thermal energy conversion otec types renewable energy. While pilot scale plants ocean thermal energy conference, washington, d. Wave energy conversion and ocean thermal energy conversion potential in developing member countries. It use a temperature difference 20 ac between the upper layer of ocean surface and bottom layer of ocean surface is required to run the turbine to generate an electricity. Ocean thermal energy conversion otec is a baseload renewable energy source that uses the temperature difference between the warm surface ocean water and the cold deep ocean water to generate electricity. Ocean thermal energy conversion makai ocean engineering.
The water at the surface of the sea or ocean is heated by the sun while the water in deeper sections is relatively cold. 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. And getting a right seminar for submission is really a tough task. The governor of hawaii, david ige, flipped the switch to activate the plant. Otec works in a manner very similarly to geothermal energy. Technical readiness of ocean thermal energy conversion. Ocean thermal energy conversion technology brief 3 highlights process and technology status ocean thermal energy conversion otec technologies use the temperature dffierence between warm seawater at the surface of the ocean, and cold seawater at between 8001 000 metres m depth to produce electricity.
Ocean thermal energy conversion otec environmental. Predictable and continuous, the energy produced in this way is particularly environment. 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. 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. An ocean thermal energy conversion power plant built by makai ocean engineering went operational in hawaii in august 2015. Annual production kwh name plate kw x 8760 hours x cf. Pdf a closed cycle ocean thermal energy conversion basically involves a working fluid which has a boiling point just low below ambient. Source of energy which we have started using in recent times is called nonconventional energy sources example nuclear energy, geothermal energy, solar energy, ocean tides fossils fuels fossils fuel are the remains of the prehistoric animal. Potential and realities of ocean thermal energy conversion. Ocean energy is a type of renewable energy extracted from the sea, from the sources like marine current, ocean thermal power, tides, salient gradients and waves.
Otc 21016 economics of ocean thermal energy conversion otec. Between now and the 1990s there is a requirement to. Ocean thermal energy conversion otec environmental impacts. Paul rappaport for his encouragement during the initial stages of this work. Otec is applicable to most parts of the worlds deep oceans between 20 o. Process and technology status ocean thermal energy conversion. 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. Warm seawater is taken in from the surface of the oceans and cold water from the deep at 5 o. A working fluid is successively vaporised and condensed in a thermodynamic cycle, with the gas phase driving a turboalternator producing electricity. Darsonval first thought about the idea more than a century ago but it was only in early 1970 when research on this technology started to take shape. This paper discusses about the ocean energy, ocean thermal energy potential, ocean thermal energy conversion by the close, open and hybrid cycles, environmental impact and special conditions of these process. Ocean thermal energy conversion otec is a source of renewable energy wherein the temperature differential between deeper, colder water and warmer, shallow water is used to run a heat energy engine and produce 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.
Jul 19, 2012 favourable conditions for ocean thermal energy conversion otec can be found off the coast of over 80 countries worldwide. Ocean thermal energy conversion otec generates electricity indirectly from solar energy by harnessing the temperature difference between the sunwarmed. The difference in temperature between the surface and the lower water layer can be as large as 50 c 90 f over vertical. The warm water near the surface of the ocean is used to. The ocean geothermal energy foundation is advancing geothermal technology to stop greenhouse gas and climate change worldwide. Ocean thermal energy conversion otec and the pacific islands page 5 executive summary the idea of using thermal energy from the ocean is not new. The upper layer is warmed by the sun and mixed to depths of about 100 m by wave motion. 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 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.
Mar 10, 2015 ocean thermal energy seminar and ppt with pdf report. Ocean thermal energy conversion otec is a technology that dates back to the late 1800s and makes use of temperature differences between surface and deep ocean waters to drive a heat engine, and extract energy via the rankine cycle. Ocean thermal energy conversion technology brief 3 highlights. 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. Ocean thermal energy conversion otec types renewable.
Download the seminar report for ocean thermal energy. 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 is a sustainable way to produce electricity from the difference of temperature between deep cold and warm surface seawater. The technological concept to harvest the thermal energy in the ocean is universally called ocean thermal energy conversion otec. Otc 21016 economics of ocean thermal energy conversion. 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. The greater the temperature differential, the higher the efficiency of the heat engine. Pdf this paper presents different roots of ocean thermal energy conversion otec strategies and challenges faced in terms of efficiency. 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. Tt documents work done by the seri materials, systems analysis, and solar thermal conversion branches on task 3127. Ocean thermal energy seminar and ppt with pdf report. Pichtr honolulu, hi abstract the vertical temperature distribution in the open ocean can be simplistically described as consisting of two layers separated by an interface. It is one of the renewable energy resources that do not arise any indeed harmful impact on our environment. 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.
418 861 200 131 385 1042 203 446 570 898 1625 1114 1351 666 1007 45 1347 1620 639 555 903 1012 1274 1497 915 1194 329 583 231 1126 392 368 128 1005 94 403 1320 230 273