Ocean thermal energy conversion otec environmental. Technical readiness of ocean thermal energy conversion otec. Between now and the 1990s there is a requirement to. Technical readiness of ocean thermal energy conversion. Predictable and continuous, the energy produced in. Otec has tremendous potential to supply the worlds energy. Ocean thermal energy conversion otec generates electricity indirectly from solar energy by harnessing the temperature difference between the sunwarmed.
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. 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 environmental technology. Ocean thermal energy conversion otec is considered as a promising resource of energy in the future. 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. 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. This paper will cover concept, process, energy calculations, cost factoids and environmental aspects. Ocean thermal energy conversion an overview sciencedirect. Potentially of ocean thermal energy conversion otec. 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. Download the seminar report for ocean thermal energy. Otec transfer function the relationship between the thermal resource and the electricity generated. Ocean thermal energy conversion produces energy from temperature differences in ocean waters.
An ocean thermal energy conversion power plant built by makai ocean engineering went operational in hawaii in august 2015. Ocean thermal energy conversion 3 thermodynamic efficiency a heat engine gives greater efficiency when run with a large temperature difference. The ocean contains enoughenergy power all of the worlds otec is a way to generateelectrical needs. Ocean thermal energy conversion otec environmental impacts. 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 plant is a combination of marine waters and power generation. Otec system is smaller than that in the conventional thermal or nuclear power systems, and subsequently the thermal ef. Mar 10, 2015 this page contains ocean thermal energy seminar and ppt with pdf report. This makes them the worlds largest solar energy collector and energy storage system. Ocean thermal energy conversion systems convert the energy available in the temperature gradient of the warm surface. The use of organic isobutane will be investigated for a closedcycle ocean thermal energy conversion otec onshore plant that delivers 110 mw electric powers. 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 governor of hawaii, david ige, flipped the switch to activate the plant.
First introduced in 1881, otec has been described as an effective and renewable energy source. 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. Preliminary feasibility study of ocean thermal energy. 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. 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.
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. Pdf the ocean thermal energy conversion strategies and. 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 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 power four activities us department of energy. 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. Analysis of ocean thermal energy conversion power plant. Ocean thermal energy conversion using doublestage rankine cycle. 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. This vast amount of solar energy absorbed in the oceans can be converted into electricity by a process known as ocean thermal energy conversion, popularly. Alternative methods of clean energy such as ocean thermal energy are available to us. Ocean thermal energy conversion otec uses large flows of warm surface seawater and cold deep seawater to generate clean electricity. Ocean thermal energy conversion technology brief 3 highlights.
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. Since it is an ecofriendly resource, this does not mean that it. At one point, we all have to make ppt of any topic and submit its report. The ocean thermal extractable energy visualization oteev project focuses on assessing the maximum practicably extractable energy mpee from the worlds ocean thermal resources.
Otec works in a manner very similarly to geothermal energy. The upper layer is warmed by the sun and mixed to depths of about 100 m by wave motion. 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. Ocean thermal energy conversion otec types renewable. Pdf this paper presents different roots of ocean thermal energy conversion otec strategies and challenges faced in terms of efficiency. Ocean thermalenergy conversionotec utilizes the worlds largestsolar radiation collector theocean. Ocean thermal energy conversion plant market size, industry. The tropical ocean at a typical otec site has two distinct layers. Ocean thermal energy conversion makai ocean engineering. 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. There are various forms of ocean energy such as ocean thermal energy conversion otec.
Ocean temperature differences, ocean thermal energy conversion, otec, renewable energy. Basics and information on ocean thermal energy conversion. 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 britannica. Ocean thermal energy conversion otec state of development such that under certain scenarios cost competitive baseload electricity could be produced, cf 0. 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. Otec frameworks utilize the seas regular warm slopethe way that the seas layers of water have distinctive. Ocean thermal energy conversion otec uses the ocean thermal gradient between cooler deep and warmer shallow or surface seawaters to run a 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. 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 the otec resource covers an area exceeding 100 million km2 across tropical oceans. There are many different technologies that allow for energy production from the ocean, such as generating energy from waves, tides, and ocean temperatures. Sea thermal energy conversion otec is a vitality innovation that changes over sun oriented radiation to electric force. One such source of energy is ocean thermal energy conversion otec.
Annual production kwh name plate kw x 8760 hours x cf. Diaz diazb, julia rosa martinez garciab, courtney scarboroughc, patrick green. The technological concept to harvest the thermal energy in the ocean is universally called ocean thermal energy conversion otec. 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. This is the first true closedcycle ocean thermal energy conversion otec plant to be connected to a u. A signircant fraction of solar radiation incident on the ocean is retained by seawater in tropical. The warm water near the surface of the ocean is used to. While pilot scale plants energy, a combination of technical and. 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. 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. Tt documents work done by the seri materials, systems analysis, and solar thermal conversion branches on task 3127. Thermal energy geothermal, ocean thermal radiant energy solar chemical energy oil, coal, gas, biomass nuclear energy uranium, thorium 6 sustainable energy fall 2010 conversion. Pdf a closed cycle ocean thermal energy conversion basically involves a working fluid which has a boiling point just low below ambient. Welcome to the okinawa prefecture deep sea water ocean thermal energy conversion otec demonstration facility.
In the energy conversion, the heat exchangers transfer the thermal energy to the heat engine, which converts it into power. Sumit thakur mechanical ocean thermal energy seminar and ppt with pdf report. Otc 21016 economics of ocean thermal energy conversion. In isobutane cycle, hot ocean surface water is used to vaporize and to superheat. It is one of the renewable energy resources that do not arise any indeed harmful impact on our environment. Mpee is defined as being sustainable and technically feasible, given todays stateoftheart ocean energy. Ocean thermal energy conversion otec is a way of getting useful energy from the worlds oceans. 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. Otc 21016 economics of ocean thermal energy conversion otec. Revisiting ocean thermal energy conversion rod fujitaa,n, alexander c. Pdf ocean thermal energy conversion otec ajer research. This is the first true closedcycle ocean thermal energy conversion otec.
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. 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. Electricity generation by the ocean thermal energy tethys. Unlike most renewable energy conversion systems, otec could deliver power at very high capacity factors and offer baseload capabilities. 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. Wave energy conversion and ocean thermal energy conversion. This situation justifies reevaluating otec for the production of electricity, desalinated water and energy intensive products. The oceans cover a little more than 70 percent of the earths surface. 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. 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. Yet the potential of the otec is very large, especially in countries whose land is crossed by the equator. Ocean thermal energy conversion simple english wikipedia. Ocean thermal energy conversion, or otec, uses seawater to turn solar energy into electricity.
And getting a right seminar for submission is really a tough task. Paul rappaport for his encouragement during the initial stages of. 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 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. It is postulated that the us should begin to implement the first. The problem which arises is that most of our nations produce energy from the traditional burning of fossil fuels. Predictable and continuous, the energy produced in this way is particularly environment. Pdf economics of ocean thermal energy conversion otec.
By looking at the advantages and disadvantages of ocean thermal energy, we might change this view. The preliminary feasibility study for ocean thermal energy conversion application project, funded by the korean research institute of ships and ocean engineering, involved the. The amount solar energy absorbed by the oceans is equivalent to atleast 4000 times the amount presently consumed by humans. Paul rappaport for his encouragement during the initial stages of this work.
Process and technology status ocean thermal energy conversion. With global warming a certainty, it is imperative that we turn to nonpolluting and renewable sources of energy. 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, which uses the oceans.
Ocean thermal energy conversion otec types renewable 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. Plantship a ship designed to house an otec power plant. Ocean thermal energy conversion otec works in a manner very similarly to geothermal energy. Nonconventional sources of energy are turning out to be extremely important sources of energy for mankind.
400 717 16 1357 265 362 843 954 336 328 574 42 1250 517 539 399 1319 876 1498 42 647 882 1186 728 1131 991 599 849 648 1023 253 1260 111 1269 1345 1277 226 561 1461 995 85 1074 76