Ocean thermal energy conversion otec generates electricity indirectly from solar energy by harnessing the temperature difference between the sunwarmed. Ertekinb department of ocean and resources engineering, university of hawaii at manoa. Marine renewable energy promises to assist in the effort to reduce carbon emissions worldwide. 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 energy, including wave and tidal current energy. Pdf ocean wave energy conversion michael mccormick. Hill climb search is the most common and accurate methodology. Tt documents work done by the seri materials, systems analysis, and solar thermal conversion branches on task 3127.
First introduced in 1881, otec has been described as an effective and renewable energy source. The ocean energy systems energy technology collaboration programme oes was launched in 2001. Principle and preliminary calculation of ocean thermal. Oceans contain a huge energy resource with different origins.
Schematic representation of an energy conversion device. Predictable and continuous, the energy produced in this way is particularly 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. Wave energy conversion and ocean thermal energy conversion.
Energy conversion device energy input energy output energy output energy input 1st law useful energy output energy input 2nd law figure 41. 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. X, sharing the same aims and scope, editorial team, submission system and rigorous. Ertekinb department of ocean and resources engineering, university of hawaii at manoa, 2540 dole st. Bohn solar energy rasearch institute a division of midwest research institute 1536 cole boulevard golden, colorado 80401 operated for the u. Nov 18, 2016 the reality of available resources for each type of ocean energy system follows. Global world energy overview with specific part from ocean energy pdf. 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. Diaz diazb, julia rosa martinez garciab, courtney scarboroughc, patrick green. Process and technology status wave energy converters wecs capture the energy contained in ocean waves to generate electricity. 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.
Wave power calculations for a wave energy conversion device. Pa p e r economic and social benefits from wave energy. Mar 10, 2015 ocean thermal energy seminar and ppt with pdf report. Ocean thermal energy conversion plant is a combination of marine waters and power generation. Tidal energy extracted from the turbines depends on ocean current speed, tidal height, sea temperature, up cross period which most artificially intelligent algorithms such as neural networks ignore. The ocean energy systems technology collaboration programme oes is an intergovernmental collaboration between countries, which operates under framework established by the international energy agency in paris. Extracting energy from ocean waves is not a recent phenomenon, as r esearchers have been studying different concepts or solutions since the 1970s. 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. Thermal energy geothermal, ocean thermal radiant energy solar chemical energy oil, coal, gas, biomass nuclear energy uranium, thorium 6 sustainable energy fall 2010 conversion.
Abstract ocean thermal energy conversion otec is the use of a high surface temperature of the water with the low temperature of the water at a certain depth thus creating a heat engine. Technical readiness of 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. Finally, case studies of ocean energy sites and devices allow for a better understanding of how ocean energy conversion works in realworld settings. The upper layer is warmed by the sun and mixed to depths of about 100 m by wave motion. The efficiency of an energy conversion device is a quantitative expression of this balance between energy input and energy output. Examining the future of ocean thermal energy conversion.
This is the first true closedcycle ocean thermal energy conversion otec plant to be connected to a u. Two major ocean thermal technologies are of interest in hawaii. Despite enthusiastic projections and promising prototypes, however, a lack of governmental support and the need for risky capital investment have. 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. Energy conversion and management has an open access mirror journal energy conversion and management. Ocean thermalenergy conversionotec utilizes the worlds largestsolar radiation collector theocean.
The united states and other countries are pursuing ocean current energy. Pdf ocean energy is an important and promising renewable energy for the future. 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. Research regarding ocean energy resources, status of wave and tidal power technologies, and ocean thermal energy conversion otec technologies was. Between now and the 1990s there is a requirement to. Ocean wave energy conversion a survey conference paper pdf available in conference record ias annual meeting ieee industry applications society 3. Ocean thermal energy conversion research, development, and demonstration act 42 u.
Ocean power four activities us department of energy. 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 is a process or technology for producing energy by harnessing the temperature differences thermal gradients between ocean surface waters and deep ocean waters. Ocean thermal energy conversion plant market size, industry. Solar, wind, and ocean energy conversion systems describes various energy harvesting technologies, different topologies, and many types of power electronic interfaces for standalone utilization or grid connection of energy harvesting applications. Global world energy overview with specific part from ocean energy. The ocean contains enoughenergy power all of the worlds otec is a way to generateelectrical needs. Tidalocean energy conversion systems by the implementation of machine learning ml. Pdf ocean thermal energy conversion siddharth garaniya. Ocean thermal energy conversion is technically feasible in geographical areas with warm surface water and cold deep water, providing a temperature difference that can be leveraged to produce power. 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.
At one point, we all have to make ppt of any topic and submit its report. Extracting energy from ocean waves is not a recent phenomenon, as r esearchers have been studying different concepts or. 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. Environmental and ecological effects of ocean renewable. 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 generates electricity indirectly from solar energy by harnessing the temperature difference between the sunwarmed surface of tropical oceans and the colder deep waters. Revisiting ocean thermal energy conversion rod fujitaa,n, alexander c. A project certified by the department of energy doe as a demonstration project is exempt from being required to obtain an otec license from noaa, pursuant to the. Ocean thermal energy conversion technology britannica. Predictable and continuous, the energy produced in this way is particularly environmentally friendly and decarbonised. Technologies to convert ocean currents energy into electricity are under development. An ocean thermal energy conversion power plant built by makai ocean engineering went operational in hawaii in august 2015. Ocean thermal energy conversion otec is considered as a promising resource of energy in the future. The most developed conversion systems refer to tidal energy, thermal energy otec, marine. Ocean thermal energy seminar and ppt with pdf report. 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. Ocean energy data tides, waves and currents can be used to produce electricity.
Ocean thermal energy conversion otec using nonazeotropic mixtures such as ammoniawater as working. Along with providing all the necessary concepts and. Technical readiness of ocean thermal energy conversion. Wave power calculations for a wave energy conversion. Otec can operate with a very high capacity factor and so can operate in base load mode the denser cold water masses, formed by ocean surface water interaction with cold atmosphere in. Aug 14, 2017 ocean thermal energy conversion otec system principle of working. Pa p e r economic and social benefits from wave energy conversion marine technology a b s t r a c t this paper summarizes the energy resource, the energy conversion technology, and the economic and social benefits of using wave energy technology. 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. Sumit thakur mechanical ocean thermal energy seminar and ppt with pdf report. This book is an invaluable resource for students at graduate and senior undergraduate level engineering ocean, mechanical, and civil and oceanography with prior knowledge of fluid mechanics and.
As with any largescale development in the marine environment, however, it comes with uncertainty about potential environmental impacts, most of which have not been adequately evaluatedin part because many of the devices have yet to be deployed and tested. After a consideration of the development of an ocean renewable energy project from site selection and device design through to grid connection and commissioning, we finally discuss how tidal energy conversion influences sediment dynamicsa process, via morphodynamics, that can influence the resource itself. The performance and effectiveness of the multistage cycle are barely. Wave power calculations for a wave energy conversion device connected to a drogue jerica d. Ocean energy is estimated to be able to provide 2 to 3 million megawatts of power from our worlds coastlines. The operation of otec plant is based upon thermodynamic principle in which if a heat source is available at a higher temperature and a heat sink at a lower temperature then the temperature difference can be utilized to run a prime mover e. Ocean thermal energy conversion otec is a process or technology for producing energy by harnessing the temperature differences thermal gradients between. Both rely on the fact that the deep ocean is significantly colder than the tropical surfacenearly 40 degrees fahrenheit colder. Ocean thermal energy conversion systems convert the energy available in the temperature gradient of the warm surface. Ocean thermal energy conversion, which generates power from the temperature difference between warm surface seawater and cold seawater at 8001,000 metres depth.
Ocean thermal energy conversion produces energy from temperature differences in ocean waters. Ocean thermal energy conversion an overview sciencedirect. 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. Wave energy conversion and ocean thermal energy conversion potential in developing member countries.