Ocean Thermal Energy Conversion (OTEC)

Energy Research and Development Administration research progress in Ocean Thermal Energy Conversion (OTEC) is outlined. The development program is being focused on cost effective heat exchangers; ammonia is generally used as the heat exchange fluid. Projected costs for energy production by OTEC vary between $1000 to$1700 per kW

The potential impact of Ocean Thermal Energy Conversion (OTEC) on fisheries

The commercial development of ocean thermal energy conversion (OTEC) operations will involve some environmental perturbations for which there is no precedent experience. The pumping of very large volumes of warm surface water and cold deep water and its subsequent discharge will result in the impingement, entrainment, and redistribution of biota. Additional stresses to biota will be caused by biocide usage and temperature depressions. However, the artificial upwelling of nutrients associated with the pumping of cold deep water, and the artificial reef created by an OTEC plant may have positive effects on the local environment. Although more detailed information is needed to assess the net effect of an OTEC operation on fisheries, certain assumptions and calculations are made supporting the conclusion that the potential risk to fisheries is not significant enough to deter the early development of IDEe. It will be necessary to monitor a commercial-scale plant in order to remove many of the remaining uncertainties. (PDF file contains 39 pages.

A Guide to the Meyer-Roney OTEC Library

The collection consists of journal articles, books, reports, magazines, correspondence, memos, and additional publications. One of the primary publications is the Ocean Energy (formerly The OTEC Liaison), is a monthly, international newsletter published since 1976. Publication deals with all forms of solar ocean energy, mostly OTEC, and is the principal communication vehicle in the field. There were subscribers in over 40 countries. This collection has been digitized and made available online here: http://nsuworks.nova.edu/nsudigital_otec-liaison/ Correspondence includes letters with luminaries in the field of oceanography around the world. There is documentation on multiple proposed OTEC plants in various countries as well as an excellent compendium of research on OTEC (see inventory list, primarily Box 2 of 4). Dr. James R. Roney partnered with Richard Meyer in many projects involving the advancement of OTEC, from the establishment of basic research principles to commercial installations, the largest of which was a 150-Megawatt plant at St. Croix in the U.S. Virgin Islands planned to provide both electricity and potable water. Others included in that project were Lockheed, TRW, Chase Bank, and contractors from the offshore oil industry. More recent ocean energy projects include Sea Water Air Condoning, or SWAC, with the focus of the Meyer-Roney team, with a major development in the Miami-Fort Lauderdale area. Further information is available at the website of The Ocean Energy Council, based in West Palm Beach. A much condensed biography of Dr. Roney follows: Career naval officer in Engineering and Submarine Service, included: submarine command, and lead instructor, Naval Nuclear Power School. Consultant to the Department of Energy on OTEC. Reviewed proposals by Lockheed, TWR\u3c and other potential contractors. Prepared report Economics of OTEC , with Wharton Econometrics. Site visits for OTEC projects included: site visit to Taiwan for OTEC project review, to Guam (several) for major review and report on energy in Guam, and for financing and possible construction support for Guam OTEC. Contractor on feasibility and site studies for OTEC plant on St. Croix, U.S. Virgin Islands. U.S. Representative to United Nations Conference on Health of the Oceans, Geneva

Розробка алгоритму роботи та програмного забезпечення пристрою економного управління нагрівачем з захистом від перенапруги і замерзання

I Durban diskuteras i dagarna inte bara koldioxidutsläpp utan också hur man bäst tar tillvara den enda procent av världens vatten som är tjänligt dricksvatten. Att värna om befintligt sötvatten är viktigt, men det finns också ett annat sätt: extrahera dricksvatten från havet med den gröna tekniken OTEC. Bara några mil från ökenområdena ligger Afrikas kust och OTEC kan ge både elektricitet och tusentals kubikmeter sötvatten varje dygn. Projektet OTEC Africa (www.otecafrica.org) syftar till att åstadkomma just detta

Ocean Energy: Using the Ocean's Tides, Waves, and Heat to Generate Electricity

Key facts: - The oceans' tides, waves, current, and heat can be used to generate electricity. These resources are renewable, because the moon's gravity drives tides, and winds create waves. Covering 70 percent of the Earth's surface, the oceans collect significant amounts of heat from the sun. - A tidal dam with a capacity of 240 megawatts (MW) has operated in France since 1966; a 100 MW tidal dam has generated power in China since 1987; and a 20 MW tidal dam has operated in Canada since 1984. Several other, smaller ocean energy systems are also in use around the world. Theoretically, ocean waves could produce more than 2 million MW of electricity, according to the US Department of Energy. - The best locations for harnessing wave power are regions with the strongest winds. Areas off the Northwest and Northeast coasts of the United States have good potential for ocean energy

Tunneling and Drilling for OTEC Cold Water Pipes

This report summarizes the results of a study to determine the feasibility of using a tunnel or large-diameter drilled shaft as a conduit for transporting cold water from an ocean depth of 2000 ft to an ocean thermal energy conversion (OTEC) plant located on shore. The report identifies five possible cold water pipe (CWP) approaches that are dependent on the geologic formation and hydrology of the site. For this survey, the site under consideration is Keahole Point on the west coast of the big island of Hawaii. The site was chosen because of the easy access to deep cold water provided by the steep offshore slope, the proximity to air and sea transportation, and the availability of land. The survey concludes that although many site-specific factors must be considered, tunneling or drilling is in general a viable option for meeting the long-term OTEC cost goals. This study was carried out for the United States Department of Energy (DOE) by the Energy Technology Engineering Center (ETEC) as part of the OTEC Cold Water Pipe Technology program.Prepared for the United States Department of Energy, Ocean Engineering Technology Division, under Contract Number DE-AC03-76-SF00700, Task 43532-6530