Cold water, pumped through a second heat exchanger, condenses the vapor into a liquid, which is then recycled through the system. Warm H2O is collected through a screened enclosure near to the shop. Ongoing cold water pipe research and design.
The disadvantages of OTEC is produced electric at present would be more than electricity generated from fossil fuels at theirs current costs. Although there are numerous important environmental and institutional questions, they are secondary to the economic and cost issues. With an increasingly electrified population and concerns about energy efficiency and carbon footprint increasing worldwide, industrial and military users are looking for ways to make more efficient use of their thermal energy resources.
The study was performed by Makai Ocean Engineering under a cost-shared grant and can be downloaded here. It is therefore in the tropics that OTEC offers the greatest possibilities.
It will be connected to the ocean via several pipes, and an tremendous fish farm football countries by other pipes. The test facility allows Makai to measure the performance of evaporators and condensers, as a function of water velocity, temperature difference, and ammonia flow rate.
Warm surface sea H2O is pumped through a heat money changer where the low boiling H2O point is vaporized. Work is being conducted to develop a 1MW facility on Kume Island requiring new pipelines. The testing and research will be conducted with the support of Saga University until the end of FY It is a demo plant capable of generating kilowatts, enough to power about homes.
OTEC is not competing for other vital resources such as food and fresh water. This paper addresses the economic, social and environmental issues pertinent to the commercialization of OTEC.
Carbon dioxide is a nursery gas and can impact planetary clime ; nevertheless, OTEC systems release one or two orders of magnitude less C dioxide than comparable dodo fuel power workss and those emanations may be sequestered easy in the ocean or used to excite marine biomass production.
Publication CEC, March Unlike other renewable energies, the maximum available energy from OTEC is not limited by land, shorelines, water, environmental impact, human impact, etc. OTEC has the potential of being a very clean alternative energy — unique for a firm power source capable of providing massive energy needs.
Major concerns considered in the design include crushing the pipe and dropping the pipe. Makai uses a unique OTEC plant analysis software to design heat exchangers which accounts for lifespan, performance heat transfer and pumping efficienciesand cost fabrication and effect on platformto enable true optimization.
Hawaii is the best US OTEC location, due to its warm surface water, access to very deep, very cold water, and high electricity costs. Furthermore, only a few have been tested at sea, in ocean waves, rather than in artificial wave tanks.
Favored locations include those with narrow shelves volcanic islandssteep degrees offshore slopes, and relatively smooth sea floors. This fully functioning OTEC power plant will provide several benefits: The tropical ocean at a typical OTEC site has two distinct layers: Warm seawater passes through an evaporator and vaporizes the working fluid, ammonia.
OTEC plants pump large quantities of deep cold seawater and surface seawater to run a power cycle and produce electricity. Weather and waves destroyed it before it could generate net power. Floating works ships could supply more flexibleness. With these applications, the total number of FERC permits and applications for wave and tidal projects in California waters totals twelve.
At present, OTEC plants can be built that will be economically attractive to Hawaii, Puerto Rico and Guam at electrical rates just above twenty cents per kWh range without energy credits.
A development Road Map was created that is now being implemented. Even within the US, this island market is very large; globally it is many times larger.
Makai is an engineering services provider, and thus we work with multiple OTEC project developers to provide objective technical guidance at all levels, from engineering and economic feasibility to component design. First, land based power workss, the land based pilot works will dwell of a edifice.
Lockheed invented a unique fiberglass cold water pipe fabrication technology, which led to a cooperatively funded Department of Energy project.
The figure to the right shows the facility under construction in mid-Octoberportions of these systems are visible.The energy in waves comes from the movement of the ocean and the changing heights and speed of the swells.
It is estimated that the total power of waves breaking on the world’s coastlines is 2 to 3 million megawatts. An average 4 foot, second wave striking a coast puts out more than horse power per mile of coast. OTEC systems use the ocean’s natural thermal gradient, consequently the temperature difference between the warm surface water and the cold deep water below metres by about 20’c, an OTEC system can produce, a significantly amount of power.
Ocean Thermal Energy Conversion Otec Environmental Sciences Essay. Print Reference this.
Published: 23rd The concept of OTEC (ocean thermal energy conversion) has existed for over a century as fantasised by Jules Verne in and conceptualised by French physicist, Jacques arsene d arsonval in Surface water is these regions. An ocean thermal energy conversion power plant built by Makai Ocean Engineering went operational in Hawaii in August The governor of Hawaii, David Ige, "flipped the switch" to activate the plant.
This is the first true closed-cycle ocean Thermal Energy Conversion (OTEC) plant to. Ocean Thermal Energy Conversion Otec Environmental Sciences Essay July 17, July 13, The oceans cover a little more than 70 per centum of the Earth surface.
Your in-depth source of information for Ocean Thermal Energy Conversion. Home; News; and events around Ocean Thermal Energy Conversion (OTEC) and related subjects, such as ocean engineering, mariculture, power infrastructure, environmental impact and global climate change.
The purpose of the OTEC foundation with the OTEC news website is to.Download