SEARASER could be one of the most efficient sources of renewable energy. It could also be one of the cheapest methods of producing electricity this includes nuclear, gas or coal as it does not attract a carbon levy.
The thinking behind the “SEARASER” by its British Inventor ALVIN SMITH.
Nuclear energy is by far the most reliable form of electricity production, but the clean-up over subsequent decades might outweigh the early fruitful years of production.
Hydro energy for the production of electricity is the next most efficient energy source and has advantages over direct wind systems in being storable and controllable. However, most hydro systems in the western world have been exploited to their full potential, which means that future demand will not be satisfied by hydro unless new hydro energy forms become available.
SEARASER represents that new, sustainable energy form. If we move water to higher ground or to a hilltop we would have a controllable hydro system similar to the Welsh and Scottish pumped storage systems but utilising RENEWABLE ENERGY and not fossil fuels to pump the water up to the head.
So how do we get water to run up hill?
SEARASER uses wave displacement to lift a float attached to a piston and uses gravity in the wave’s following trough to push the piston back down. It is different from other wecs as it is tethered to a weight on the seabed by a single flexible tether, but utilises a double acting piston, thereby producing volumes of pressurised water in both directions of the piston.
Another age-old problem is how to accommodate the pump at all levels of a rising and ebbing tide. Incorporated in the design of the SEARASER pump is an adjustable hydraulic column platform which adjusts itself and locks to any height of the tide.
So now we have a wave (or swell) pump, to pump sea water to a hilltop (or water from lakes that are large enough for waves). It uses the 100% clean, renewable energy of the water in which it floats to pump the stored potential energy. The water lubricates the pump, thus avoiding the need for oils.
If high ground is not available or unsuitable for storing the water for the turbines, the pressurised water pumped via an accumulator direct from the waves will be of sufficient pressure to drive the turbine generators near sea level. These are based on land or offshore rigs, or indeed afloat. The disadvantage of no high head storage is no guarantee of on-demand energy!
A scooped-out and lined hilltop does not require a dam. It can only be seen from above, could be pleasant to the eye and a source of food, and if properly landscaped and managed, could provide habitat for wildlife. All machinery can be subterranean, and no electrics at all need be at sea which drastically reduces the cost of maintenance.
Read More at http://dartmouthwaveenergy.com/index.html