Utilizing wave power at anchor - As a complement for marine vessels
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Examensarbete på grundnivå
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Model builders
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Abstract
When not being in service and at anchor, vessels such as M/T Ramona produces greenhouse
emissions when powering vital components on the vessel. When a vessel is anchored and
waiting for a new order or to enters a port, the auxiliary engines provide the vessel with
electrical power.
The auxiliary engines run on diesel that costs money, and being a fossil fuel, it contributes to
global warming.
One solution is to use a wave energy converter attached to the hull to produce zero-emission
energy.
Several cylindrical buoys are attached to the vessel through an arm and pump a hydraulic oil
pressure when the buoy goes up and down. The hydraulic oil pressure accumulates in an
accumulator tank and drives the turbine that drives a generator. With the help of SMHI's
weather buoys outside Brofjorden, wave amplitude and frequency have been used to calculate
how much potential power the wave energy converter can produce. The result can define how
vessels at anchor produce energy and new applications for environmentally sustainable
transports at sea.
This report is based on the specifics of M/T Ramona and the FABWEC system that recently
was tested by Yang et al. (2019) as a good candidate for such a system. This article only covers
the theoretical side of the test, and no real-life test was conducted. Nevertheless, the findings
suggest that enough energy can be converted to supply a vessel the same size as M/T Ramona.
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Keywords
wave energy converter, wave energy, FABWEC, Brofjorden,, M/T Ramona