Download PDF by National Research Council, Division on Earth and Life: An Evaluation of the U.S. Department of Energy's Marine and

By National Research Council, Division on Earth and Life Studies, Ocean Studies Board, Division on Engineering and Physical Sciences, Board on Energy and Environmental Systems, Marine and Hydrokinetic Energy Technology Assessment Committee

ISBN-10: 0309269997

ISBN-13: 9780309269995

Expanding renewable strength improvement, either in the usa and in a foreign country, has rekindled curiosity within the power for marine and hydrokinetic (MHK) assets to give a contribution to electrical energy new release. those assets derive from ocean tides, waves, and currents; temperature gradients within the ocean; and free-flowing rivers and streams. One degree of the curiosity within the attainable use of those assets for electrical energy new release is the expanding variety of allows which were filed with the Federal power Regulatory fee (FERC). As of December 2012, FERC had issued four licenses and eighty four initial allows, up from almost 0 a decade in the past. even if, each one of these allows are for advancements alongside the Mississippi River, and the particular gain discovered from all MHK assets is very small. the 1st U.S. advertisement gridconnected undertaking, a tidal venture in Maine with a ability of lower than 1 megawatt (MW), is at the moment supplying a fragment of that energy to the grid and is because of be totally put in in 2013.

As a part of its review of MHK assets, DOE requested the nationwide study Council (NRC) to supply precise reviews. In reaction, the NRC shaped the Committee on Marine Hydrokinetic power know-how evaluation. As directed in its assertion of activity (SOT), the committee first constructed an period in-between record, published in June 2011, which involved in the wave and tidal source tests (Appendix B). the present record comprises the committee's overview of all 5 of the DOE source different types in addition to the committee's reviews at the total MHK source evaluation technique. This precis specializes in the committee's overarching findings and conclusions relating to a conceptual framework for constructing the source exams, the aggregation of effects right into a unmarried quantity, and the consistency throughout and coordination among the person source exams. reviews of the person source overview, extra dialogue of the sensible MHK source base, and overarching conclusions and suggestions are defined in An review of the U.S. division of Energy's Marine and Hydrokinetic source Assessment.

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Additional info for An Evaluation of the U.S. Department of Energy's Marine and Hydrokinetic Resource Assessments

Sample text

Other use issues include sea–space conflicts raised by, for instance, shipping channels, navigation, and military considerations and multiple- or competing-use issues such as fisheries or recreation. Such filters are, by nature, specific to the local sites where decisions related to MHK projects will be made. The practical filters can greatly influence the timing of the permitting process and can lead to unpredictable consequences, which in turn can affect a project’s economic viability. Box 1-2 presents two scenarios to help elucidate the differences between the theoretical, technical, and practical resource.

In-water or field tests would assist in the quantification of realistic extraction filters and/or device-specific conversion efficiencies, because the data obtained could be used to calibrate numerical models. Outputs related to the technical resource include an estimate of the energy resource and a GIS that sets forth spatial and temporal variation in the resource associated with various technologies. In the committee’s view, the assessment groups determined that reporting the technical resource (rather than the practical resource) represented the completion of their projects.

Because the power produced by a turbine is related to the product of the head and the flow rate, it is clear that capturing tidal currents is considerably less effective than capturing the hydraulic head associated with even a modest tidal range. It is often claimed that in-stream turbines have less serious ecosystem impacts than barrages, though it is not at all clear that this is true for installations with the same average power output. In spite of these reservations, and because in-stream turbines could possibly be used in small-scale projects or in areas without a large tidal range, much work has gone into evaluating their potential.

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An Evaluation of the U.S. Department of Energy's Marine and Hydrokinetic Resource Assessments by National Research Council, Division on Earth and Life Studies, Ocean Studies Board, Division on Engineering and Physical Sciences, Board on Energy and Environmental Systems, Marine and Hydrokinetic Energy Technology Assessment Committee


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