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 technical evaluation of nonelectrical carriers lead, for example, to the consideration of hydrogen produced using electricity and desalinated water generated with otec technology. Closed cycle ocean thermal energy conversion otec december 15, 2009 leave a comment go to comments darsonvals original concept used a working fluid with a low boiling point, such as ammonia, which is vaporized using the heat extracted from the warm surface water. Simply stated, this energy conversion goes against nature and nature imposes a tax on it. Figures 42 and 43 are illustrations of how to use the information provided in table 41 for the case of. Ammonia will be used as the working fluid in this cycle. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 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. Ocean thermal energy conversion otec is a concept that has the potential to address this growing issue. Here youll find a collection of information on this historic project, as well as information on otec technology, news, and posts from facility staff. Or you receive external pdf documents youd like to augment but dont. Heat extraction from coldwater sink to condense the working fluid in the condenser. Principle and preliminary calculation of ocean thermal. 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.
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, 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. Dec 15, 2009 closed cycle ocean thermal energy conversion otec december 15, 2009 leave a comment go to comments darsonvals original concept used a working fluid with a low boiling point, such as ammonia, which is vaporized using the heat extracted from the warm surface water. Ocean thermal energy conversion makai ocean engineering. Ocean thermal energy conversion otec makes use of the temperature differences between the deep cold and relatively warmer surface waters of the ocean to generate a constant, clean source of 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. 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. This constancy differs from the output of renewable resources such as wind and wave energy that sometimes produce intermittent electricity.
Yes, please and also add nuance power pdf as a supported pdf maker not just adobe. After a few uses, youll experience the flexible potency of power pdf and how it can help your business succeed. Principle and preliminary calculation of ocean thermal energy. Ocean thermal energy conversion otec is a technology for generating. Ocean thermal energy conversion otec is a technology for obesity treatment pdf generating. Ocean thermal energy conversion eliminates the heat collector, and provides steady power, but has practical issues and tends to be in distant locations. Oscillating water column owc type wave energy converter. 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. The working fluid in such a cycle will need to have a low boiling point.
Suggested citation the suggested citation for this report is. 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. Or a coworker has deleted lost the original source word document. In order to produce power with the low temperature range, a working fluid with low boiling point is used. So when converting from one form to another there will be a natural tendency to convert to a form with higher entropy. 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 developing member countries dmcs reduce their dependence on fossilfuel based energy generation and bolster energy security. 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. Oceans act as incredibly large solar energy collectors, absorbing about 80% of the suns energy. It is basically a mechanism that exploits the temperature difference between warm surface seawater and cold deep ocean water, to produce electricity.
Chapter 16 ocean thermal energy conversion commentary types of otec plant economics and finance a typical otec design the need for a demonstrator plant, current practice and the market references country notes commentary ocean thermal energy conversion otec is a means of converting into useful energy the temperature difference between surface water of the oceans in. Otec energy could be transported via chemical, thermal, and electrochemical carriers. Join us in exploring this exciting path into the future. Jan 22, 2017 vishwakarma institute of technology, pune, b tech mechanical engineering 14 conclusion ocean thermal energy conversion is a potential source of renewable energy that creates no emissions i. A marine renewable energy production system for tropical areas ocean thermal energy conversion unlimited ocean thermal. Ocean energy conversion systems are being developed in a number of countries, as shown in fig. From olden times, people had previously utilized the force of the waters in order to crush grain or. Download the seminar report for ocean thermal energy. Otec, or ocean thermal energy conversion, is an energy technology that converts solar radiation to electric power. Energy conversion maximizing the power produced from a geothermal plant is crucial for costeffective operation.
If a file is created by printing to pdf, it will not be correctly tagged. Apr 03, 20 ocean thermal energy conversion sph3u i. 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. Canada and norway also have a significant number of technology development activities. Ocean thermal energy conversion simple english wikipedia.
Ocean thermal energy conversion otec and the pacific islands page 5 executive summary the idea of using thermal energy from the ocean is not new. Otec can operate with a very high capacity factor and so can operate in base load mode. If a pipe is put down into the ocean we can bring the cold. Welcome to the okinawa prefecture deep sea water ocean thermal energy conversion otec demonstration facility. 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 otec types renewable energy. View ocean thermal energy conversion research papers on academia.
It is found that separate evaporator and condenser discharges potentially increase otec net power limits by about 60%. Of all the new ocean energy sources, otec ocean thermal energy conversion seems to offer the best medium term prospects. Pdf ocean energy technology development the challenge of. Darsonval first thought about the idea more than a century ago but it was only in early 1970 when research on this technology started to take shape. 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. Vishwakarma institute of technology, pune, b tech mechanical engineering 5 abstract otec, or ocean thermal energy conversion, is an energy technology that converts solar radiation to electric power. Biofoulingbiof ouling is the result of certain marine organisms attaching themselves to submerged objects, biofouling may be detrimental to the system in a number of. Otec is not like wind power or solar power which are intermittent, because the technology can operate on a 247 basis.
T where this energy is called the thermal or internal energy because it arises from motion within the system rather than overall motion of the container itself. 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. Otec ocean thermal energy conversion systems use the oceans natural thermal gradient the fact that the oceans layers of water have different temperatures to drive a powerproducing cycle. Apr 23, 2018 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 remain few and far between. There are many benefits to otec, but there is also some cons. The purpose of the otec foundation with the otec news website is to centralize and organize the current scattered information on otec, educate the public and raise global awareness by providing factual otec information. It is this internal energy u that changes when heat flows into or out of the gas through the fixed container walls, raising or lowering the temperature. Concludes with an overview of the economic viability, market potential and. 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. Every form of energy has an associated entropy or degree of randomness. A portion of the heat extracted from the warm sea water must be rejected to a colder thermal sink.
Renewable, clean and reliable power for energy needs of today and tomorrow. Ocean thermal energy conversion research papers academia. From olden times, people had previously utilized the force of the waters in order to crush grain or help them to do their work more efficiently. It has a low environmental impact, can supply pure water for both drinking and agriculture purposes. Otec systems use the oceans natural thermal gradientthe fact that the oceans layers of water have different temperatures to drive a power. Energy conversion and management has an open access mirror journal energy conversion and management.
The stored thermal energy is completely renewable so that ocean thermal energy use. Were hoping for a onestep conversion to pdf in netdocs. Noaa office for coastal management about the office. My lectures on thermodynamics and energy conversion are now a book 600 pages, good for 2 or 3 courses. Salinity gradient conversion exploits the difference between salinity of fresh water and salt water, or salt.
The warm seawater vaporizes the fluid in the heat exchanger which then turns the turbines of the generator. Overall, ocean thermal energy conversion is a great possible way to produce clean renewable energy without any harmful emissions. 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. 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. It discusses the key factors of otec systems, as well as coproducts, plus the possible mitigation of global warming with the absorption of atmospheric carbon dioxide.
Introductory covering over 70% of the earths surface, water is one of the most amazing energy sources. An ocean thermal energy conversion otec is a system of converting thermal energy in electricity by using the temperature difference between warm water at the surface of the ocean and cold water. Ocean thermal energy conversion research, development, and demonstration act 42 u. If you access through a subscribing library, you can download the ebook for free through. Thermal energy conversion otec power plant technical and economic feasibility technical report,vol. The stored thermal energy is completely renewable so that ocean thermal energy use will not reduced the stored energy quantity. For example, if i have a word document or any office document in. This paper attempts to provide a better understanding of the hydrodynamic behaviour of a floating multiresonant oscillating. Electric heater electricity thermal energy hair drier electricity thermal energy electric generator mechanical energy electricity.
Ocean thermal energy conversion otec types renewable. Deep cold and relatively warmer surface waters of the ocean to generate baseload. 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. Ocean thermal energy convert ion power station oceans. Start studying thermal energy conversion types examples. Otec ocean thermal energy conversion systems use the ocean s natural thermal gradient the fact that the ocean s layers of water have different temperatures to drive a powerproducing cycle. The low energy conversion efrciency of otec means that more than 90% of the thermal energy extracted from the oceans surface is wasted and must be rejected to the cold, deep sea water.
Wave energy conversion and ocean thermal energy conversion potential in developing member countries. 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. This text presents the scientific principles and developmental potential of ocean energy resources. Ocean thermal energy conversion otec generates electricity indirectly from solar energy by harnessing the temperature difference between the sunwarmed. Cost effective otec ocean thermal energy conversion. Otec systems must be designed with regard to potential efficiency issues.
The following instructions can also be used to convert powerpoint files to pdf. Warm seawater is taken in from the surface of the oceans and cold water from the deep at 5 o. Department of energy is researching a range of technologies that will improve plant operating efficiencies. Ocean thermal energy conversion otec is a way of getting useful energy from the worlds oceans. During the last few years, however, new options for energy out at sea have been introduced. 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. This means that every day, the oceans on our planet absorb solar energy equivalent to 250 billion barrels of oil, and if we could convert 0. Otec plants pump large quantities of deep cold seawater and surface seawater to run a power cycle and produce electricity. Our goal is to generate competitive and sustainable baseload power through ocean thermal energy conversion otec and attractive energy efficient alternatives to air conditioning through seawater district cooling sdc, as well as affordable potable water, sustainable food production, and economic development opportunities to our customers. Why is it hard to convert heat into electrical or any.
Guide for authors energy conversion and management. 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. Ocean thermal energy convert ion free download as powerpoint presentation. 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. Ocean thermal energy conversion, or otec, uses seawater to turn solar energy into electricity.
Ocean thermal energy conversion renewable energy caribbean. 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 developing member countries dmcs reduce their dependence on fossilfuel based energy generation and. Availability of report a pdf file of this report is available at. Ocean thermal energy conversion technology britannica. Ocean thermal energy conversion otec is a process that employs the natural temperature difference between the surface and the depths of the ocean. The second law of thermodynamics precludes the complete conversion of thermal energy in to electricity. First introduced in 1881, otec has been described as an effective and renewable energy source. Wave energy conversion and ocean thermal energy conversion. Ocean thermal energy is a electrical energy produced by using the temperature difference between deep cold ocean water and warm tropical surface waters. Otec ocean thermal energy conversion, the process of converting the ocean thermal energy into electricity. Ocean thermal energy heat exchanger energy conversion. A simple algorithm previously used to evaluate steadystate global ocean thermal energy conversion otec resources is extended to probe the effect of various effluent discharge methodologies.
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