Ocean thermal energy conversion otec types renewable energy. Otec has tremendous potential to supply the worlds energy. Pdf ocean thermal energy conversion otec ajer research. There are many different technologies that allow for energy production from the ocean, such as generating energy from waves, tides, and ocean temperatures. Ocean thermal energy conversion produces energy from temperature differences in ocean waters. Ocean thermal energy conversion otec usually incorporates a lowtemperature rankine cycle which boils a working fluid such as ammonia to generate a vapor which drives a turbine to generate. Ocean thermal energy conversion environmental technology. Ocean thermal energy conversion technology britannica. 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. Predictable and continuous, the energy produced in. Annual production kwh name plate kw x 8760 hours x cf.
Ocean thermal energy conversion an overview sciencedirect. In the energy conversion, the heat exchangers transfer the thermal energy to the heat engine, which converts it into power. Revisiting ocean thermal energy conversion rod fujitaa,n, alexander c. Ocean thermal energy conversion otec, which uses the oceans. The problem which arises is that most of our nations produce energy from the traditional burning of fossil fuels. And getting a right seminar for submission is really a tough task. The ocean contains enoughenergy power all of the worlds otec is a way to generateelectrical needs.
Ocean thermal energy conversion using doublestage rankine cycle. Ocean thermal energy conversion plant is a combination of marine waters and power generation. Tt documents work done by the seri materials, systems analysis, and solar thermal conversion branches on task 3127. Technical readiness of ocean thermal energy conversion. Ocean thermal energy conversion otec works in a manner very similarly to geothermal 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. Sumit thakur mechanical ocean thermal energy seminar and ppt with pdf report. 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. Ocean thermal energy conversion plant market size, industry.
Potentially of ocean thermal energy conversion otec. Thermal energy geothermal, ocean thermal radiant energy solar chemical energy oil, coal, gas, biomass nuclear energy uranium, thorium 6 sustainable energy fall 2010 conversion. There are various forms of ocean energy such as ocean thermal energy conversion otec. Ocean thermal energy conversion otec environmental impacts. Mar 10, 2015 this page contains ocean thermal energy seminar and ppt with pdf report. A signircant fraction of solar radiation incident on the ocean is retained by seawater in tropical. Ocean thermal energy conversion otec generates electricity indirectly from solar energy by harnessing the temperature difference between the sunwarmed. An ocean thermal energy conversion power plant built by makai ocean engineering went operational in hawaii in august 2015. 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. Since it is an ecofriendly resource, this does not mean that it. While pilot scale plants 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 is a process or technology for producing energy by harnessing the temperature differences thermal gradients between ocean surface waters and deep ocean waters. Sea thermal energy conversion otec is a vitality innovation that changes over sun oriented radiation to electric force.
Worldwide information indicates that although there are sufficient petroleum resources to meet demand for about 50 years, production is peaking and we will face a steadily diminishing petroleum supply. 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. Yet the potential of the otec is very large, especially in countries whose land is crossed by the equator. 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 tropical ocean at a typical otec site has two distinct layers. By looking at the advantages and disadvantages of ocean thermal energy, we might change this view.
The oceans cover a little more than 70 percent of the earths surface. Ocean thermalenergy conversionotec utilizes the worlds largestsolar radiation collector theocean. Ocean thermal energy conversion otec is considered as a promising resource of energy in the future. The ocean thermal extractable energy visualization oteev project focuses on assessing the maximum practicably extractable energy mpee from the worlds ocean thermal resources. This makes them the worlds largest solar energy collector and energy storage system. Process and technology status ocean thermal energy conversion.
Pdf the ocean thermal energy conversion strategies and. One such source of energy is ocean thermal energy conversion otec. Alternative methods of clean energy such as ocean thermal energy are available to us. Ocean thermal energy conversion otec types renewable. The temperature difference between the surface water which gets heated by the direct sun rays and the water at the sea bed is utilized to run a heat engine and produce useful work. Ocean thermal energy conversion technology brief 3 highlights.
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. Ocean thermal energy conversion simple english wikipedia. Ocean thermal energy conversion otec harvests the power from the thermal energy in the ocean, which is reserved in the ocean as the temperature difference between warm surface and cold deep seawaters. 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. Ocean thermal energy conversion otec is a promising renewable energy technology to generate electricity and has other applications such as production of freshwater, seawater airconditioning, marine culture and chilledsoil agriculture. Ocean thermal energy conversion, or otec, uses seawater to turn solar energy into electricity. Ocean thermal energy conversion, also known as otec for short, is the use of temperature differences around 20c25c from the warmer surface waters and cooler deeper water to produce electricity. In isobutane cycle, hot ocean surface water is used to vaporize and to superheat. The warm water near the surface of the ocean is used to. Ocean thermal energy conversion otec state of development such that under certain scenarios cost competitive baseload electricity could be produced, cf 0. This is the first true closedcycle ocean thermal energy conversion otec.
Otc 21016 economics of ocean thermal energy conversion otec. Wave energy conversion and ocean thermal energy conversion. The use of organic isobutane will be investigated for a closedcycle ocean thermal energy conversion otec onshore plant that delivers 110 mw electric powers. Otec transfer function the relationship between the thermal resource and the electricity generated. 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. Ocean thermal energy conversion otec uses the ocean thermal gradient between cooler deep and warmer shallow or surface seawaters to run a heat engine. Analysis of ocean thermal energy conversion power plant. 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 otec is a way of getting useful energy from the worlds oceans. This paper will cover concept, process, energy calculations, cost factoids and environmental aspects. Mpee is defined as being sustainable and technically feasible, given todays stateoftheart ocean energy. This assessment describes the potential of ocean thermal energy conversion otec to produce not only clean energy but also potable water, refrigeration, and aquaculture products. 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. Otec system is smaller than that in the conventional thermal or nuclear power systems, and subsequently the thermal ef.
Ocean thermal energy conversion otec is a method of generating energy that uses the temperature differences between warm surface water and colder deep seawater to produce 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. Preliminary feasibility study of ocean thermal energy. Welcome to the okinawa prefecture deep sea water ocean thermal energy conversion otec demonstration facility. 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. 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.
This is the first true closedcycle ocean thermal energy conversion otec plant to be connected to a u. 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. Between now and the 1990s there is a requirement to. Predictable and continuous, the energy produced in this way is particularly environment. It is one of the renewable energy resources that do not arise any indeed harmful impact on our environment. Ocean thermal energy conversion otec uses large flows of warm surface seawater and cold deep seawater to generate clean electricity. Plantship a ship designed to house an otec power plant. Diaz diazb, julia rosa martinez garciab, courtney scarboroughc, patrick green. Ocean thermal energy conversion otec is a field of science that is still less developed in the area of renewable energy sources for electricity utilization. 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. Unlike most renewable energy conversion systems, otec could deliver power at very high capacity factors and offer baseload capabilities. The governor of hawaii, david ige, flipped the switch to activate the plant. The heat stored in the ocean can be converted into electricity by means of a process called ocean thermal energy conversion otec, which uses the ocean s natural temperature gradient to drive a turbine connected to a generator which produces electricity.
The heat stored in the ocean can be converted into electricity by means of a process called. The preliminary feasibility study for ocean thermal energy conversion application project, funded by the korean research institute of ships and ocean engineering, involved the. Here youll find a collection of information on this historic project, as well as information on otec technology, news, and posts from facility staff. It is postulated that the us should begin to implement the first. Pdf this paper presents different roots of ocean thermal energy conversion otec strategies and challenges faced in terms of efficiency. 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. Nonconventional sources of energy are turning out to be extremely important sources of energy for mankind.
Basics and information on ocean thermal energy conversion. Paul rappaport for his encouragement during the initial stages of. 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. Electricity generation by the ocean thermal energy tethys. Ocean power four activities us department of energy. 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. The amount solar energy absorbed by the oceans is equivalent to atleast 4000 times the amount presently consumed by humans. Ocean surface water that is heated by solar energy then stored in the earths oceans is evaporated and used to spin a turbine in a. This situation justifies reevaluating otec for the production of electricity, desalinated water and energy intensive products. Ocean thermal energy conversion systems convert the energy available in the temperature gradient of the warm surface. Otec works in a manner very similarly to geothermal energy. Paul rappaport for his encouragement during the initial stages of this work. Pdf a closed cycle ocean thermal energy conversion basically involves a working fluid which has a boiling point just low below ambient.
At one point, we all have to make ppt of any topic and submit its report. With global warming a certainty, it is imperative that we turn to nonpolluting and renewable sources of energy. Ocean thermal energy conversion makai ocean engineering. Otec frameworks utilize the seas regular warm slopethe way that the seas layers of water have distinctive. Ocean thermal energy conversion 3 thermodynamic efficiency a heat engine gives greater efficiency when run with a large temperature difference. Ocean thermal energy conversion otec environmental. Otc 21016 economics of ocean thermal energy conversion. Technical readiness of ocean thermal energy conversion otec. The technological concept to harvest the thermal energy in the ocean is universally called ocean thermal energy conversion otec.
While pilot scale plants energy, a combination of technical and. Ocean thermal energy the otec resource covers an area exceeding 100 million km2 across tropical oceans. Ocean temperature differences, ocean thermal energy conversion, otec, renewable energy. Pdf economics of ocean thermal energy conversion otec. First introduced in 1881, otec has been described as an effective and renewable energy source.
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