Portland Bill (Dorset, UK) is a promising site for tidal stream energy exploitation; it combines high tidal stream velocities around the headland with a location closer to population centres than other proposed sites. To better estimate available energy resources at the site, a two-dimensional...

Carbon emissions due to rural energy consumption in China have not yet been sufficiently addressed or quantified. In this work systematic accounting with a life cycle perspective was used to estimate both the direct CO2 emissions from fuel combustion and the indirect emissions from the...

Energy from marine currents offers the promise of regular and predictable electrical generation at higher power densities than other renewables. The marine current resource is potentially large but mainly concentrated in a number of sites around the world. The power density for a horizontal axis...

Utilising marine currents for electricity generation could offer a distinct advantage over other renewable energy sources due to the regular and predictable nature of the resource. This paper details the design of a horizontal axis Marine Current Turbine using 2D aerofoil data and a blade...

At present a small number of full-scale marine current energy converters are undergoing sea trials to demonstrate commercial viability of the technology. In order to provide meaningful quantities of electrical power to the grid, the next phase in the development of the technology will be the...

A 0.4m diameter horizontal axis marine current turbine was tested in a circulating water channel. The power output was measured over a range of flow speeds, blade pitch and rotor yaw angles. Experimental results were compared with the modelled output determined from a commercial blade element...

The development of a blade element momentum (BEM) model for the hydrodynamic design of marine current turbines is presented. The model includes routines for interpolation of 2D section data and extrapolation for stall delay. The numerical model is compared with experimental data obtained from...

Marine current energy converters or tidal turbines represent an emerging renewable energy technology that can provide a predictable supply of electricity. Single devices are in operation around the world with aspirations to deploy farms or arrays of multiple devices.

Various global studies have shown that marine currents have large potential as a predictable sustainable resource for commercial scale generation of electrical power. For successful exploitation of this resource, an understanding of the hydrodynamics of the marine current turbine is of primary...

Energy security, climate change and economic crises are currently dominating the attention of the world. It is also well known that access to energy is a crucial and enabling mechanism for development. In particular, the provision of electricity in rural settings has tremendous impact on well...