Showing papers on "Marine energy published in 2003"

AquaBuOY-the offshore wave energy converter numerical modeling and optimization

Abstract: This paper describes development of the mathematical model simulating ocean performance of an offshore wave energy point absorber device-AquaBuOY. The AquaBuOY is the next generation of the technology, based on the IPS point absorber system and the hose pump, both of Sweden. AquaEnergy Group Ltd., USA, is developing the system in cooperation with RAMBOLL, Denmark. In March 2003 the Danish Energy Authority awarded a grant for a design study that includes development of the numerical model for the AquaBuOY operation, experimental testing and design optimisation. The scale model tests will be carried out at Aalborg University, Denmark in order to optimise the device design, operation and installation configuration with the goal of minimising system footprint. The paper provides an overview of the numerical modelling used in establishing system operating characteristics. The experimental results from the model tests on mooring forces under survival conditions will be presented during the conference in conjunction with different footprint configurations and different mooring systems. Finally the performance data based on theoretical and experimental results will be presented for the AquaBuOY in five representative generic sea states. Ocean energy and offshore wave energy conversion in the United States is at a significant milestone. During the next year, ocean energy technology developers and energy officials have the potential to deploy pilot scale ocean power plants and transition to commercial plants in the US. This capability comes at a time of increased interest in ocean energies at the National Academy of Sciences and the US Department of Energy. AquaEnergy will conclude its presentation with a brief overview of current legislation affecting the industry. In 2004, ocean scientists, engineers, and developers can continue to lay the groundwork for government spending and interest in ocean energies.

The OPD Pelamis WEC: Current status and onward programme (2002)

Abstract: SYNOPSIS Ocean Power Delivery Ltd is developing an offshore Wave Energy Converter concept known as Pelamis. The device is a free-floating articulated cylinder, with hydraulic power take-off, suitable for general deployment in water depths over 50 metres. Survivability is the core theme but various techniques are employed to enhance power capture. The device is an assembly of available technology reducing the required development time. A 1/7th scale prototype incorporating the full hydraulic power take-off, control and data acquisition systems has been tested in the Firth of Forth. A full-scale preproduction prototype is due to be built, launched and deployed at the new Orkney Marine Energy Test Centre within the next 12 months. This paper describes the Pelamis development programme to date [1] with goals for the onward programme.

Energy Island

Abstract: This paper deals with diverse renewable energy sources such as: wind energy, sea current energy, wave energy, solar energy, ocean thermal energy conversion.

Waving in energy

Abstract: Alexander M Gorlov explains how the helical turbine can be used to extract energy from currents and waves at sea, as well as rivers.

Ocean power generator airplane type legless chair

Abstract: An object of the present invention is to generate electricity by rotating a generator with a tidal flow and a river flow in order to solve the problem of environmental pollution caused by conventional power generation methods such as thermal power generation and nuclear power generation. A generator frame fuselage is mounted on an airplane wing and bolted, and the generator frame propeller is moored by a chain between a float and a submersible anchor on the sea floor with a generator frame rudder. It is characterized by a warm current flowing along the Japanese archipelago of 1,5 meters, and a marine power generator airplane-type chair that is installed in the domestic strait or back door and Okawa to produce electric power. [Selection diagram] Fig. 1

Ocean energy power generator

Abstract: The ocean energy power generator consists of buoyancy energy taker, air pump, high pressure cabinet, air turbine, electric generator, float, chain, power output wheel, tension wheel, weight, push rodand rack. The buoyancy energy taker may be either drawing chain type or pushing rack type. The present invention can utilize both tide energy and wave energy of sea and convert the tide energy and wave energy into the energy stored in high pressure gas and the energy stored in high pressure gas is further converted into electrical energy as required.

Phase change energy-accumulating stable electricity generating method and plant

Abstract: The present invention relates to a new technology of utilizing unstable energy source in generating electricity and outputting stable energy. An outer drive force produced by unstable energy source produces power, transmission work medium is fed to sealed system with energy-accumulating stabilizing work medium, and the output of the sealed system is then used to drive power generator set to produce electricity. The present invention can be used in the field of utilizing and developing marine energy, wind energy and other unstable energy source to obtain stable output energy.

To Ruminat About Continuous Development Strategical Problem of Energy Source in China

Abstract: Carry out a researches into continuous development p ro blem of energy source in the China.Resources quantities gather store quantiti es consumetion quantities of convention energy(coal,petroleum,natural gases )domestic and abroad have been analysed development and application problem of reproducing energy(sun energy,water energy,wind energy,biology energy and ocean energy)are discussed.Saving problem of convention energy has been rese arched.