FIG. 25 shows a near shore, shore facing apex with the limbs of the WEC pointing towards open water. One or more embodiments of the present invention may be configured in an open curve or arc orientated either towards the ocean with the open side towards shore (convex) or with the open side towards open water (concave). The Shore orientated apex variant concentrates excess wave energy towards the centre (apex) of the converter which offers greater conversion efficiencies in light seas. The wedge shaped profile of the WEC 10 encourages the wave to ramp up on approach to the WEC and then ride over the WEC with minimal disturbance whilst maximising wave surge to wave heave conversion and thereby maximising wave energy conversion as the membrane compresses.
- Wave height=4 meters
- Evitar exponernos a escenarios cargados de contaminación ambiental o sustancias tóxicas
- Uso de drogas recreativas
- Tratar a síntomas tales como dificultad en respirar y dolor
- Apertura de hombros (Uttanasana)
Preferably the valving is accessible by removing an access port cover at a rear of the WEC 10 and preferably in-line with the axis of the valving 68. The valving 68 is released and then withdrawn rearward and upward. Then as the wave trough passes over the converter the wave flow assists return of the membrane ready for the next wave action.
Load on the generator(s) (or electrical power output) or performance of the turbine(s) can be varied based on actual or predicted or expected wave height, form and period information so that the pressure differential and flow across the turbine(s) can be controlled or optimised and the resultant turbine speed(s) optimised for maximum electrical energy production.
Dolor En El Hombro
Electricity generated by the wind turbine may be used to power electrical equipment, such as pumps and control systems and safety systems relating to the WEC. The face member and membrane may be pre attached to each before mounting to the body. A further aspect of the present invention provides a wave energy converter (WEC), including a body portion and at least one cell, each said cell defined at least in part by a flexible membrane and an opposed surface, wherein, for a vertical plane through the cell the length of the curve of the membrane cut by the plane is substantially the same as the length of the curve of the face cut by the same plane. This allows the WEC to be swung to face the prevailing oncoming waves to maximise wave energy conversion, or to be angled to control how much effect the waves have on the WEC i.e.
This allows the WEC to be hinged forward to adapt to changes in prevailing wave conditions by altering the angle β to tilt the WEC forward. These WECs can, in general, exhibit better coupling with the wave than other WECs because of low system inertia (fast response) and due to their reduced complexity, and have the potential to produce power more cost effectively over a broader range of wave conditions than other types of WEC discussed above. Alternatively, it is desirable of the present invention to provide a wave energy converter (WEC) better able to harness available wave energy than the aforementioned known converters. BACKGROUND TO THE INVENTION With present concerns over global warming, carbon emissions and limited access to or availability of traditional fossil fuels, sources of alternative, renewable, energy are becoming more and more important.
FIGS. 12a and 12b show an alternative valving or porting option for a WEC according to an embodiment of the present invention and a close coupled turbine adjacent the cell according to an embodiment of the present invention. WEC according to an embodiment of the present invention. The sequential steps show the action of a wave 14 on a flexible membrane 16 of the WEC over a complete wave sequence for a WEC according to an embodiment of the present invention. FIGS. 2a to 2k show in sequential steps wave action on the membrane for a half swept cell volume over a complete wave sequence for a WEC according to an embodiment of the present invention.
While there may be an average period and average wave height at a given location and given time, there will still be variations from wave to wave, and within each wave. The converter is preferably arranged with cells in line horizontally so there is an even average air pressure across the cells. Average pressure may be determined, at least in part, by averaging various pressures within a cell or across a number of cells at a particular time (simultaneous average pressure) or across one or more cells over time (temporal averaging). Aliviar el dolor de espalda . 194) may pass around the winch pulley 190, or separate tethers may be provided 192, 194, each controlled to effectively lengthen or shorten to allow the WEC to rotate. The rear face or surface of the membrane within the cell and/or the corresponding face or surface of the body of the cell that contact each other when the cell is deflated may be non-smooth.
The converter may also be used for the production of a pressurised third fluid (typically water for storage or sea water-for desalination), by exchanging the electrical generator for at least one pump. Solar, wind and wave power systems for generating electrical energy are well known. ‘pillow shaped bags’ mounted off the side of the spine to capture wave energy and reduce bag wear. 38 to 40, the wave energy converter 10 may have alternative forms of rear wall arranged to direct return flow 142 of water.