The Emerging Electrical Markets for Copper
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- Alternative Technical and Market Solutions Wave Power
- Figure 71: Oscillating Water Column Generator
Marine Energy GenerationSector Background The largest natural energy resource of all is found in the oceans. To date, we have not learned to tap this resource. Most technologies are at the design stage, and the projects that are supposed to be commercial have met with limited success. Yet, in the future, ocean power technologies will almost certainly become very important. They fall into two main types, those tapping wave energy, and those utilising the tidal range. Other technologies require the exploitation of thermal and temperature gradients in the ocean. It is possible that marine power will start to provide a market by 2020, but the real potential is later than this. Alternative Technical and Market Solutions Wave Power: This technology involves the capture of the energy of ocean surface waves to generate electricity. The world's first commercial wave farm is based in Portugal, at the Aguçadoura Wave Park, which consists of three 750 kW Pelamis devices. It became operational in 2008. The European Marine Energy Centre (EMEC) has enumerated approximately 100 wave energy concepts, with many of them still at the R&D stage. There are three main technologies, however, which are described briefly below. Oscillating Water Column (OWC) is the oldest and to date most successful of the technologies. It comprises a partly submerged structure that is open to the sea below the water surface so that it contains a column of water. Air is trapped above the surface of the water column. As waves enter and exit, the water column moves up and down, acting like a piston pushing the air back and forth. The air is channelled through a turbine coupled to a generator, and so produces electricity. Figure 71: Oscillating Water Column Generator 
Wave Collection Systems rely on replacing ocean breaks or sea walls with wave collection systems. By creating a series of layered “reservoirs” up a carefully calculated slope, they trap water from waves, releasing it through a turbine and thereby generating electricity. It is estimated that a 500 metre breakwater should have 150 kW capacity. Marine Buoy Systems convert the vertical motion of a marine buoy into an electrical charge. The charge is converted to DC electricity, which is collected and transported to shore. It is estimated that a 10 MW station would occupy one and a half hectares of sea area, and that a 15 hectare 100 MW station could be cost-competitive with energy produced from fossil fuels. The Pelamis Wave Power Generator, now placed off Portugal, is a variant of the Marine Buoy System. The name Pelamis comes from a sea-snake. This system comprises a number of large semi-submerged tubular metal sections. The movement of waves makes these sections ripple or bend, rather like a snake. This bending action forces hydraulic pistons, causing fluid to flow inside. This movement is then converted into energy. Directory: wordpress -> wp-content -> uploads -> 2017 uploads -> Professor rona s beattie and dr david bamaung glasgow caledonian university email for corresponding author uploads -> Best Offensive Players: qb #19 keenan reynolds, N, ’16. Lg #57 E. K. Binns, N, ’16 uploads -> Smart Supervision Research Partner Orientation Course fy13 and fy14 Grantees September 29- october 1, 2015/San Antonio, tx uploads -> Autonomous Control for a Reliable Internet of Services (across) 2017 -> 6 Thai Market Analysis 2017 -> Birchwood intermediate school 2017 -> Operation corporate 2017 -> This document is written for the amateur radio operator that will be using the PiGate as an emergency communications device in a disaster situation Download 10.26 Mb. Share with your friends:
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