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- Presentation:
Rose and Ertsgaard
Most future emissions models predict that hundreds of billions of tons of carbon dioxide removal is needed by the end of the 21st century to complement emission reductions to meet the goals of the 2015 Paris Agreement. Macroalgae farming has been identified by several highly recognized organizations as a potential carbon capture strategy, and significant research investments have…
- Presentation:
Farr et al.
The marine energy industry is advancing from early-stage research and development towards large scale deployments and commercialization. Many US participants have been active in the industry for over a decade and have learned some hard-fought lessons. This study sought to capture these lessons and ensure that knowledge is not lost, past mistakes are avoided, and successes are capitalized on.…
- Presentation:
Browning et al.
Many remote communities in Alaska have significant hydrokinetic resources. However, the remote locations make collecting large amounts of resource data challenging and costly. Through accurately up sampling hourly ADCP data, we are seeking ways to faithfully reproduce annual energy estimates for velocity time series with high enough temporal resolution to be useful for grid-modeling tools.…
- Presentation:
Robertson et al.
Extracting useful electricity from ocean waves is consistently receiving significant research attention. However, the technology of wave energy conversion is underdeveloped. There are many challenges that need to be addressed in order to improve the economic index of wave energy converters (WECs). One important challenge is the expenditures on developing the energy storage units to improve the…
- Presentation:
McWilliams et al.
The development and success of commercial scale marine energy (ME) projects are connected to a thorough understanding of how ME devices interact with the surrounding environment. Quantification of these effects can help facilitate effective site planning and communication between developers, regulators, and stakeholders. Understanding the interplay of ME conversion technologies and the local…
- Presentation:
Bassett
In spring 2022 R/V Russell Davis Light was moored in Agate Pass, Washington, to perform the first saltwater test of a university-developed tidal turbine designed for sustained deployment as a bottom lander to power oceanographic sensors. The system, as deployed, was self-contained in that all system components associated with a hypothetical bottom-lander configuration were present. Potential…
- Presentation:
Niffenegger et al.
The HexDEEC is a small, characteristic length approximating a centimeter, energy transducer that converts the dynamic deformations of its elastomer housing into electricity through a variable capacitance charging-discharging cycle. This device is a type of Distributed Embedded Energy Converter Technology (DEEC-Tec), a new domain for marine renewable energy research that utilizes a…
- Presentation:
Kim et al.
Ocean waves represent a significant source of renewable energy.
However, accessing and converting this energy requires working at the boundary of several physics domains: hydrodynamics, mechanics, electrical, and control.
This project explores the development of a multiphysics unifying modeling framework based on equivalent electrical circuits.The two-body Reference Model…
- Presentation:
Abdellatef et al.
As rotary power take-offs (PTO) are showing promising advantages for commercial wave energy converters (WECs), especially as rope elements are replaced with composite polyurethane-steel tension belts, the service life predictions of the PTO are becoming a major concern in design. Using belts instead of ropes for winching elements is shown to improve Cyclic Bend Over Sheave (CBOS) performance…
- Presentation:
Duvoy et al.
We introduce a methodology for a comprehensive characterization of river flows from transects surveyed at different times over near coincident transects from acoustic Doppler current profiler (ADCP) data acquired from a moving vessel.
The ADCP measurements are first rotated from East and North velocities into primary and secondary flows that are projected onto a grid of points on an…
- Presentation:
Vivekanandan et al.
The capabilities of marine vehicles, such as autonomous underwater vehicles (AUVs) and remotely-operated vehicles (ROVs), have significantly advanced to perform complicated operations such as navigating through unexplored and dynamic environments, inspection of underwater structures, and monitoring of ocean conditions in deep waters. However, the limited energy resources of AUVs and tethered…
- Presentation:
Schurtenberger
This presentation will contain much new information not presented previously about testing of hydrokinetic turbines of up to 3 m diameter with a new purpose-built test vessel. This test vessel is powered by solar and wind energy with electric motors (i.e. a “green” vessel) and has zero carbon footprint. We will also elaborate on the design and construction method of this vessel and the funding…
- Presentation:
Bosma et al.
As part of the development process, scaled testing of wave energy converter devices are necessary to prove a concept, study hydrodynamics, and validate control system approaches. Creating a low-cost, small, lightweight data acquisition system is often a barrier for wave energy converter developers’ ability to test such devices. This paper outlines an open-source solution to these issues, which…
- Presentation:
Hartman and Polagye
Oscillating Surge Wave Energy Converters (OSWECs) aim to harness the energy in ocean waves using a buoyant flap with a bottom hinge that oscillates in response to surge forces. To interpret OSWEC performance in real-word conditions, foundational knowledge is required from simulation and laboratory testing with scaled models. In laboratory experiments to characterize an OSWEC’s hydrodynamics,…
- Presentation:
Torre et al.
The marine energy potential in the United States is twice the current total national electricity consumption. Generally, it has been cost-prohibitive to take advantage of this tremendous resource. We are developing and launching a framework to analyze the potential revenue streams for marine energy to participate in existing electricity markets. This framework will provide wave energy and…
- Presentation:
Medina et al.
Ocean waves represent a large amount of clean renewable energy that could be harvested to power systems from a commercial grid scale to small stand-alone applications. Renewable wave energy development can improve energy security and enhance community resilience for American Samoa. This study presents a model and satellite-based analysis of the wave climate around American Samoa. The wave…
- Presentation:
Wynn et al.
Unlike for wind power, no winning design has yet emerged for wave energy capture. New concepts still have a chance. They need first to be scrutinized for feasibility, in particular survivability, the Achilles Heel of many past efforts. Numerical modeling then allows early-stage, low-cost design optimization for a TPL estimate. Because the PIP (Pitching Inertial Pump) WEC - a novel, pitching,…
- Presentation:
Murdy
The Marine Energy Advanced Materials project addresses the barriers and uncertainties facing marine renewable energy developers in using composite materials for load-bearing structures. Sponsored by the U.S. Department of Energy’s Water Power Technologies Office, the multiyear project comprises of collaborators from the National Renewable Energy Laboratory (NREL), Sandia National Laboratories…
- Presentation:
Faria et al.
With the world's rising concern about climate change and sustainability, renewable energy technologies evolved substantially over the past few years as result of increasing political and financial support. The US government, for example, has recently announced a 30GW target for offshore wind energy deployment by 2030 and 110GW by 2050. As the size of offshore renewable energy deployments…
- Presentation:
Williams et al.
Human induced climate change has increased the urgency to move away from reliance on fossil fuel sources for energy. While wind and solar have dominated the post carbon landspace, researchers across the globe are exploring ways to harness the power of the oceans and bring marine energy into a sustainable energy portfolio. While marine energy designs encompass a breadth of concepts and…
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