Final environmental impact statement for commercial ocean thermal energy conversion otec licensing pdf. A new rankine power cycle utilising a combination of ocean thermal energy and geothermal waste energy is proposed and thus called a geotec geo ocean thermal energy conversion power cycleplant. Ocean thermal energy conversion otec works in a manner very similarly to geothermal energy. At the mouths of rivers where fresh water mixes with saltwater, energy associated with the salinity gradient can.
Ocean thermal energy conversion, or otec, uses seawater to turn solar energy into electricity. Ocean thermal energy conversion otec systems use a temperature difference of at least 77 fahrenheit to power a turbine to produce. With global warming a certainty, it is imperative that we turn to nonpolluting and renewable sources of energy. Exporting japanese ocean thermal energy conversion technology to asia owing to the fact that japan is surrounded by ocean on all sides it has been carrying out research and development on ocean thermal energy conversion, which uses the temperature differences in the warm ocean water at the oceans surface and the cold ocean water in the ocean. 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.
The solar energy that is received by the oceans is mainly absorbed and converted into heat, due to the low. Desikan bharathan principal engineer national renewable energy laboratory golden co 80401. View ocean thermal energy conversion research papers on academia. The concept of otec was first proposed by french physicist in 1881. Ocean thermal energy conversion as a viable source of renewable energy. 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. The ocean and seas constitute about 70% of the earthssurface area and hence they represent a large storage reservoir of the solar energy. 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.
Ocean thermal energy conversion produces energy from temperature differences in ocean waters. 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. May 04, 2014 introduction ocean thermal energy conversion otec is a technology for generating renewable energy that uses the temperature difference between the deep cold and relatively warmer surface waters of the ocean to generate baseload electricity. Wave energy conversion and ocean thermal energy conversion potential in developing member countries wave energy conversion wec and ocean thermal energy conversion otec are two potentially significant sources of renewable energy that are available to. Dynamic simulation of system performance change by pid. Ocean thermal energy conversion otec types renewable energy. Ocean thermal energy conversion power plantocean thermal. The ocean thermal energy conversion otec system relies on the stored thermal energy difference in the oceans. Energy conversion takahashi, patrick, trenka, andrew on. 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. Three types of otec systems can be used to generate electricity. International levelised cost of energy for ocean energy.
This is referred to as otec for ocean thermal energy conversion. Between now and the 1990s there is a requirement to. In converting ocean thermal energy to electricity, we would need less than 1 percent of this. Principle and preliminary calculation of ocean thermal energy. Ocean thermal energy conversion renewable energy caribbean. Ocean thermal energy conversion technology brief 3 highlights. Otec international llc a leader in ocean thermal energy conversion commercialization author. The upper layer is warmed by the sun and mixed to depths of about 100 m by wave motion. Ocean thermal energy conversion otec is a promising renewable energy technology to generate electricity and has other. Revisiting ocean thermal energy conversion rod fujitaa,n, alexander c.
Ocean energy europe 20 estimates that there is the potential to create 20 000 jobs throughout the supply chain of the marine energy sector by 2030. Wave energy conversion and ocean thermal energy conversion potential in developing member countries wave energy conversion wec and ocean thermal energy conversion otec are two potentially significant sources of renewable energy that are available to help the asian development banks adb. 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. Ocean thermal energy conversion otec technology generates electricity using a temperature difference between warm water on the oceans. Oceans account for more than 70% of the earths surface and are the worlds largest collector of solar energy. Thermal energy due to temperature gradient between sea surface and deepwater can be harnessed using different ocean thermal energy conversion otec processes. The technology ocean thermal energy conversion otec harnesses the temperature difference between surface and deep water. This constancy differs from the output of renewable resources such as wind and wave energy that sometimes produce intermittent electricity. Ocean thermal energy conversion otec is considered as a promising resource of energy in the future.
Ocean thermal energy conversion ocean thermal ocean thermal energy conversion in the caribbean. Ocean thermal energy conversion otec is a process that can produce electricity by using the temperature. 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 act oteca of 1980 limits the ownership, construction and operation of offshore ocean thermal energy facilities and plantships to those licensed by the national oceanic and atmospheric administration noaa. While this publication promotes the adoption and use of renewable energy, the international. Among ocean energy sources, otec is one of the continuously available renewable energy resources that. 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.
Process and technology status ocean thermal energy conversion. The stored thermal energy in the top meter depth is more than two years of delivered solar energy, at 100 % conversion efficiency, the stored energy is sufficient for 10,000 years of human use. Ocean thermal energy conversion systems slideshare. Download ocean thermal energy conversion and the next generation.
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. Mpee is defined as being sustainable and technically feasible, given todays stateoftheart ocean energy. The technology uses sea water from the ocean depths to generate. 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. 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. At present, the cost per kwh from otec is more than that of the electricity generated from fossil fuels and decreases with increasing capacity of the power plant.
It is one of the renewable energy resources that do not arise any indeed harmful impact on our environment. In order to produce power with the low temperature range, a working fluid with low boiling point is used. Ocean thermal energy conversion climate technology centre. Exporting japanese ocean thermal energy conversion technology. Annual production kwh name plate kw x 8760 hours x cf. By utilizing the natural temperature differences between warm surface waters and deep cold water, this technology, without burning fossil fuels, generates a baseload 247 supply of renewable energy. This is the first true closedcycle ocean thermal energy conversion otec. The preliminary feasibility study for ocean thermal energy conversion application project, funded by the korean research institute of ships and ocean engineering, involved the. Ocean thermal energy conversion and the next generation. The oceans on earth already stored more than two years of solar energy transmitted to earth in the thermal form in the top meter depth.
With increases in energy prices and technical innovations over the last few years, otec systems, such the one produced by the ocean thermal energy corporation, are becoming viable technological solutions to help provide some of the worlds energy requirements. Jun 11, 2018 ocean thermal energy is a electrical energy produced by using the temperature difference between deep cold ocean water and warm tropical surface waters. Optimization of solar assisted ocean thermal energy conversion plant design and system performance is the result of my own research except as cited in the references. Ocean thermal energy conversion development update. Hawaii ocean thermal energy conversion plant first in us. In depth study about ocean thermal energy conversion systems. The larger part of this sunlight is captured as heat in the upper layers of the oceans. 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. Ocean power four activities us department of energy. A new era in the technology of ocean thermal energy conversion otec, which is a system of converting thermal energy in ocean into electricity, has come now. Ocean thermal energy conversion simple english wikipedia.
Electricity generation by the ocean thermal energy. 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. And getting a right seminar for submission is really a tough task. Pdf geoocean thermal energy conversion geotec power. Noaa office for coastal management about the office. Preliminary feasibility study of ocean thermal energy. Pdf s due to the worlds heavy dependence on fossil fuels for electricity, pollution and global warming is on the rise. Otec energy could be transported via chemical, thermal, and electrochemical carriers. Download the seminar report for ocean thermal energy. 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.
Ocean thermal energy conversion otec 1 open cycle or claude cycle. Apr 23, 2018 island nations in the developing world are especially well placed to benefit from technology that exploits a new potential source of energy from sea water. Ocean thermal energy conversion research papers academia. Predictable and continuous, the energy produced in. Introducing ocean thermal energy as efficient and viable solution to increasing energy demands, this presentation also brings out how.
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. Otec ocean thermal energy conversion was first proposed in 1881. It relies on the ocean s thermal gradient the temperature decline from the sunwarmed waters on the surface to the cold waters found at great depths. The stored thermal energy is completely renewable so that ocean thermal energy use will not reduced the stored energy quantity. Welcome to presentation on seminar topicwelcome to presentation on seminar topic ocean thermal energy conversionocean thermal energy conversion otecotec govt. At one point, we all have to make ppt of any topic and submit its report. Welcome to the okinawa prefecture deep sea water ocean thermal energy conversion otec demonstration facility. Technical readiness of ocean thermal energy conversion. Read online ocean thermal energy conversion and the next generation. Otec can operate with a very high capacity factor and so can operate in base load mode. Each day the sun provides the equivalent of 250 billion barrels of in the form of thermal energy to our oceans. Nonconventional sources of energy are turning out to be extremely important sources of energy for mankind. Aguileraf a environmental defense fund, 123 mission street, 28th floor, san francisco, ca 94105, usa b department of industrial engineering, university of matanzas, carretera a varadero km3 12. Since then, although many scientists have made earnest effort to materialization, otec has never.
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. How will ocean thermal energy conversion help the environment. Ocean thermal energy conversion otec types renewable. One ocean energy technology that has already been proven to work is ocean thermal energy conversion otec. 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. The future of ocean energy ocean thermal energy corporation. Ocean thermal energy conversion otec is a renewable energy. A signircant fraction of solar radiation incident on the ocean is retained by seawater in tropical. All books are in clear copy here, and all files are secure so dont worry about it. 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.
The governor of hawaii, david ige, flipped the switch to activate the plant. Ocean thermal energy conversion otec state of development such that under certain scenarios cost competitive baseload electricity could be produced, cf 0. Sumit thakur mechanical ocean thermal energy seminar and ppt with pdf report. International levelised cost of energy for ocean energy technologies an analysis of the development pathway and levelised cost of energy trajectories of wave, tidal and otec technologies final version 28th may 2015 a study commissioned by ocean energy systems oes, the international voice of ocean energy. Cost effective otec ocean thermal energy conversion. Ocean thermal energy conversion otec pdf ocean thermal energy conversion otec uses the temperature difference between. 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.
An ocean thermal energy conversion power plant built by makai ocean engineering went operational in hawaii in august 2015. Ocean thermal energy conversion systems convert the energy available in the temperature gradient of the warm surface. Ocean thermal energy conversion otec uses the ocean thermal gradient between cooler. Apr 11, 2015 ocean thermal energy conversion systems 1. Otec, or ocean thermal energy conversion, is an energy technology that converts solar radiation to electric power. Sep 20, 2012 the ocean thermal energy conversion act of 1980, on august 3, 1980. The thesis has not been accepted for any degree and is not concurrently submitted in candidature of any other degree. The technical evaluation of nonelectrical carriers lead, for example, to the consideration of hydrogen produced using electricity and desalinated water generated with otec technology. Ocean thermal energy conversion otec, which uses the oceans natural o bem amado dias gomes pdf temperature gradient to drive a turbine connected. Aug 21, 2015 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. Otec is applicable to most parts of the worlds deep oceans between 20 o north. Diaz diazb, julia rosa martinez garciab, courtney scarboroughc, patrick green. Makais ocean thermal energy conversion otec power plant.
Aug 27, 2015 hawaii became the first state in the us to generate electricity from the thermal energy stored in ocean water using a new 105kilowatt ocean thermal energy conversion otec plant on big island. The warm water near the surface of the ocean is used to provide thermal energy in a heat exchanger, and the cold water in the deep portions of the ocean is used to cool the exchanger fluid back down. Marine renewables are, in general, at a relatively early stage in their development and, as such, the methods of converting these potential energy sources into. 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. Wave energy conversion and ocean thermal energy conversion. The ocean thermal extractable energy visualization oteev project focuses on assessing the maximum practicably extractable energy mpee from the worlds ocean thermal resources. Ocean thermal energy conversion makai ocean engineering. 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. Apr 07, 2020 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 conversion otec is a way of getting useful energy from the worlds oceans. Ocean thermal energy conversion technology britannica.
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