A basic 4minute introduction from offshore infrastructure associates, inc, with good animations, based on puerto rico as an example location. Potential environmental impacts and fisheries christina m comfort, m. Warm seawater is taken in from the surface of the oceans and cold water from the deep at 5 o. Ocean thermal energy conversion is a technology that converts thermal energy into electricity. Download the seminar report for ocean thermal energy. Other components for otec floating plants that present engineering challenges are the position keeping system and the attachment of the submarine power cable. Tropical and subtropical regions where the water temperature at the ocean surface is relatively high are best suited for its use. There are three methods to increase the efficiency. Ocean thermal energy conversionmaterials issues springerlink.
Here youll find a collection of information on this historic project, as well as information on otec technology, news, and posts from facility staff. Syllabus the physics of energy physics mit opencourseware. Jan 22, 2009 uh awarded one of two ocean energy test centers announced by usdoe fall 2008 objectives. A special feature of this technology is its capability to generate a stable supply of electricity around the clock. 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 oceans natural temperature gradient to drive a turbine connected to a generator which produces electricity. An ocean thermal energy conversion power plant built by makai ocean engineering went operational in hawaii in august 2015. The physics of energy is a new subject, offered for the first time in the fall of 2008. 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.
A longer, 14minute introduction that includes details of lockheeds otec plant in hawaii and how it was tested. If youre seeing this message, it means were having trouble loading external resources on our website. And getting a right seminar for submission is really a tough task. In order to produce power with the low temperature range, a working fluid with low boiling point is used. There are many benefits to otec, but there is also some cons. Ocean thermal energy conversion yokogawa australia. 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. 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. Wave energy conversion and ocean thermal energy conversion potential in developing member countries. Ocean thermal energy is thus considered a reliable source of energy due to having minimal variations.
This is the first true closedcycle ocean thermal energy conversion otec. 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. Ocean thermal energy seminar and ppt with pdf report. Ocean thermal energy high capital costs, limited to sites in tropical oceans, sites far from land must transmit electricity long distances of course, all of these issues must be weighed against the benefits of ocean power.
They receive thermal energy through heat transfer from surface sea water warmed by the sun, and transform a portion of this energy to electrical power. The ocean contains enoughenergy power all of the worlds otec is a way to generateelectrical needs. 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. Department of energy, is concerned with the development of options that can be utilized to extract and distribute significant amounts of energy from the ocean. However, the sea energy conversion is not completely developed yet due to some unsolved technical problems.
Nov 18, 2016 the ocean covers more than 70% of the earths surface and has the ability to produce two types of energy. Opencycle ocean thermal energy conversion otec research. Between now and the 1990s there is a requirement to. 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. The greater the temperature differential, the higher the efficiency of. Process and technology status ocean thermal energy conversion. Pdf the ocean thermal energy conversion strategies and. Ocean thermal energy conversion otec is a renewable energy technology which produces power using a heat engine driven by the temperature difference between warm surface ocean waters and cold deep ocean waters gritton et al. 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.
Ocean thermal energy conversion technology britannica. Ocean thermal energy conversion otec environmental impacts. Overall, ocean thermal energy conversion is a great possible way to produce clean renewable energy without any harmful emissions. This is because this form of energy generation may not have low seasons unlike solar and wind power which may face low. Apr 15, 2020 welcome to the okinawa prefecture deep sea water ocean thermal energy conversion otec demonstration facility. Cost effective otec ocean thermal energy conversion. The potential impact of introduction ocean thermal. Uh awarded one of two ocean energy test centers announced by usdoe fall 2008 objectives. Ocean thermal energy conversion research papers academia. Review of the applied mechanical problems in ocean thermal. Welcome to the okinawa prefecture deep sea water ocean thermal energy conversion otec demonstration facility. Otc 21016 economics of ocean thermal energy conversion. 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.
How will ocean thermal energy conversion help the environment. Both rely on the fact that the deep ocean is significantly colder than the tropical surfacenearly 40 degrees fahrenheit colder. Learn what thermal energy is and how to calculate it. Otc 21016 economics of ocean thermal energy conversion otec. At one point, we all have to make ppt of any topic and submit its report. 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. Wave energy conversion and ocean thermal energy conversion. 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. 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. Actual ocean thermal energy conversion efficiency at any location is likely to be around 3 %. Thus, firms that provide ocean thermal energy do not have to seek alternative methods of electricity generation.
Since ocean thermal energy is free and of large reserve, the technology of energy conversion is feasible even with low efficiency 3%. Predictable and continuous, the energy produced in this way is particularly environmentally friendly and decarbonised. The course is designed for mit sophomores, juniors, and seniors who want to understand the fundamental laws and physical processes that govern the sources, extraction, transmission, storage, degradation, and. A signircant fraction of solar radiation incident on the ocean is retained by seawater in tropical. Ocean thermal energy conversion otec technolo gy has been proposed as a solu %ion for clean, renewable alterna %ive energy. The governor of hawaii, david ige, flipped the switch to activate the plant. This is the first true closedcycle ocean thermal energy conversion otec plant to be connected to a u.
A portion of the heat extracted from the warm sea water must be rejected to a colder thermal sink. View ocean thermal energy conversion research papers on academia. 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 high capital costs, limited to sites in tropical oceans, sites far from land must transmit electricity long distances of course, all of these issues must be. 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. The ocean thermal energy conversion otec program, in the ocean energy technology divison of the u. Ocean thermal energy conversion an overview sciencedirect. If only a 10% were used to generate electricity, it would be a significant.
Join us in exploring this exciting path into the future. Predictable and continuous, the energy produced in this way is particularly environment. The working fluid temperature would be increased by 4. Dynamic simulation of system performance change by pid. First the design and optimization of the thermal cycle system with different parameters eg. The potential impact of introduction ocean thermal energy. Ocean thermalenergy conversionotec utilizes the worlds largestsolar radiation collector theocean. As early as the fifteenth century pollution control was not an issue but within the. Ocean thermal energy conversion otec, which uses the oceans natural. Technology issues in renewable energy and energy efficiency. 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.
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. Innovation challenges most technology components for otec plants up to 10 mw. 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. The heat engine can take the form of a closedcycle process fig. 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. Ocean thermal energy conversion linkedin slideshare. If youre behind a web filter, please make sure that the domains. 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. A new rankine power cycle utilising a combination of ocean thermal energy and geothermal waste energy is proposed and thus called a geotec geoocean thermal energy conversion power cycleplant. 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.
Two major ocean thermal technologies are of interest in hawaii. 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. Otec,ocean thermal energy conversion is an energy otech,ocean thermal energy technology that converts solar that converts conversion is an energy technology radiations to electricalto electric power. Parsons august 1984 to be presented at the asme winter meeting new orleans, louisiana 9 14 december 1984 prepared under task no. Ocean thermal energy conversion, or otec, uses seawater to turn solar energy into electricity. Ocean thermal energy conversion systems convert the energy available in the temperature gradient of the warm surface.
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, 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 types renewable. A process called ocean thermal energy conversion generates electricity using the difference in temperature between the warm surface of the ocean and the. There are two approaches one referred to as closed cycle and the other as open cycle. 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 technology generates electricity using a temperature di erence between warm water on the oceans surface and cold water between 800 and m deep. Ocean thermal energy conversion otec types renewable energy.
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