WPP A/S - Wave Energy
kW absorption on a smaller area
Easier to place and maintain
Why? much lower weight, smaller size, mass
Reduction app. 70% in weight
app. 30% in productions prices and reduced handling and
Inventor Erik Skaarup has invented a new concept, for use on The WavePlane, but
it can also be used on other floating wave energy converters. There has been
applied for a patent in January 2002 and for PCT in January 2003.
order to find the necessary distance between the WavePlanes at sea, it became
obvious that a park of WavePlanes would take up a large area, to large an area.
The WavePlanes has to have enough space in order to never bump in to each other.
Figure 1. Normal size of park with 7 WavePlanes
reduce the area, the WavePlanes has to be fixated with something flexible. Since
the power of the ocean is so enormous it is better to yield than try to
withstand it. It also makes the construction cheaper.
The trend in wave energy today is build on the principles from wind energy. It is to produce as many MW on as few items as possible.
certain width of a wave has a certain amount of wave energy. Double the width
double the energy.
To gain the same effect on the double width of e.g. a WavePlane, it has to withstand much larger forces. The materials needed is to bee cubed 2 x 2 x 2 = 8 times. The WavePlane will not only be the double width, but also have the double thickness and double depth in the bearing structures. But it only gains the double energy absorption.
Actually extended use in material, to replace two singles of the original
WavePlanes with one the double width, is six times.
WaveFlexGrid will fixate the WavePlanes positions in relation to each other to
prevent collisions but it will not prevent the vertical movements between the
units. At the same time the WaveFlexGrid only requires one anchorage and one
Figure 2. To the left the same 7 WavePlanes (figure 1) placed in the new WaveFlexGrid
makes it possible to make the WavePlanes smaller (to a certain degree)
and thereby gain an price and material reduction.
system of the Multi-WavePlane that divides the incoming waves in several levels
was planed to be constructed in units of 400 kW energy output, in order to gain
a price reduction by mass production. This size has now been half to 200 kW.
new system ”WaveFlexGrid” is
cheaper and much more flexible. It can be suited in series to the size of a
given area of ocean and to the MW output required.