Each of the lower rows of piezoelectric elements comprises a pair of piezoelectric elements in this example, with at least one of the piezoelectric elements from a given lower row being staggered relative to the pair of piezoelectric elements from an adjacent one of lower rows, as was described for the upper row of piezoelectric elements above.
Dolor Neuropatico Curso
1) A blanket-like assembly for generating energy from waves, the assembly comprising: a planar, lower layer made of buoyant material; a planar, upper layer made of weighted material; and a plurality of spaced-apart piezoelectric/elastic elements between the planar, lower layer and the planar, upper layer. However, this is not strictly required and the buoyant planar members and elastic planar members may be made of other materials in other examples and the buoyant planar members may be constructed in other ways such as with a lighter box structure illustrated in FIG. However, this is not strictly required and the elastic planar members may be made of other materials in other examples such as a spring steel sheet, for example. Also, the elastic planar members do not have to be continuous but could be made of shorter lengths sufficient only to include the length of the beam, with sufficient extra length to allow the members to be clamped to two buoyant planar members at their ends.
The piezoelectric elements 226 in this example have a thickness TP of about 1.6 millimeters. The wave-interacting portion 48.7 of the assembly 20.7 is triangular in top profile in this example, with the buoyant planar members and piezoelectric/elastic planar members being arranged in a triangular array. 4) The assembly of clause 3 with the piezoelectric/elastic planar member that extends along and operatively couples to the buoyant planar member and is operatively coupled to that layer. The assembly includes a buoyant planar member that is flexible and an elastic planar member that extends along, operatively couples to and is coplanar the buoyant planar member. Referring to FIG. 11, each buoyant planar member 148 has a width WB that extends between its ends 162 and 164 and a length LB that extends between its sides 162 and 164. The lengths of the buoyant planar members are selected to be small, with the lengths being at least four or five times less than the wavelength of the smallest wave from which the assembly 20.1 is being designed to extract power.
Dolor Espalda Alta Causas
The assembly 20.4 thus includes the addition of relatively thin but stiff slats at regular intervals along the length of the elastic planar members 74.4, 406, 412, and 416. The width Ws of the slats in the direction of the wave motion is shaped to be at least four or five times less than the wavelength LWA.4 of the smallest wave from which the assembly 20.4 is being designed to extract energy. When the whole assembly is assembled, the piezoelectric elements and elastic planar members are thus curved or ‘pre-bent’ downwards, thereby inducing tension in the elastic planar members and compression in the piezoelectric elements. The elastic planar member so flattened causes compressive stress in the piezoelectric elements 226.5, 86.5, 228.5, 464, 466 and 468. Thus, when the assembly 20.5 is assembled and the elastic planar members 74.5 are clamped to the buoyant planar members 148.5 and 156.5, the elastic planar members are straightened again, further increasing in the compression of the piezo material to insure against the possibility of tensile rupture.
Accordingly, the piezoelectric elements as herein described are configured to promote a state of compressive stress therein. 5 and therefore will not be described in detail. The term piezoelectric element as herein described may also be referred to as a piezoelectric device. The buoyant planar member 68 may be referred to as a planar, lower layer of the assembly made of buoyant material. Alternatively, the weighted planar member may be made of other suitable materials in other examples.
Also such units or larger ones located at numerous suitable locations could generate as much energy as the Mica Dam. In certain embodiments, the elements are designed to enter into mechanical resonance in response to the passage of waves thereover, such flexure and/or resonance increasing the mechanical coupling efficiency between the waves and the elements. 7, the tethers 54 and 56 carry electrical cables 57 and 59 connected via DC busses 53 a, 53 b and 53 c, and 55 a, 55 b and 55 c, respectively, to the diode bridge circuits 98 such that when waves moving in the direction of arrow 36 pass under the assembly 20, the piezoelectric elements 86, 88, 90 and 93 seen in FIG.
Referring to FIG. Dolor fosa iliaca derecha y lumbar . 9, the following is a prediction of the energy that should be obtained by assembly 20.1 for a situation where an ocean wave of ten horsepower per foot (along the wave), of a wavelength LWA.1 of 22 meters, with a period of 3.1 seconds, and a wave height HWA.1 of 2.6 meters, with the wave-interacting portion 48.1 of the assembly 20.1 seen in FIG. The lengths LP.4 of the piezoelectric elements, as well as the lengths LE.4 of the elastic planar members will be considerably shorter than the width Ws of the slats so that the above mentioned economy may be achieved. The assembly may further include a weighted planar member operatively coupled to the buoyant planar member to promote contact of the assembly with the water. The method includes the steps of deploying a seismic streamer carrying an electrically powered device from a vessel into water having waves.
According to a third aspect, there is provided an assembly for generating energy from waves. 19 and 20 with decimal extension “0.6” replacing decimal extension “0.5” and being added for numbers not previously having decimal extensions, and with the following exceptions. The elastic planar member is between the first layer of piezoelectric elements and the second layer of piezoelectric elements.
Dolor Neuropatico Herpes
The assembly comprises a plurality of piezoelectric elements including a first said piezoelectric element coupled to and extending outwards from the first side of the buoyant planar member, a second said piezoelectric element coupled to and extending outwards from the third side of the buoyant planar member, and a third said piezoelectric element coupled to and extending outwards from the fifth side of the buoyant planar member. 3, with the rows of layer 73 being spaced-apart from and staggered relative to the first layer 71 of piezoelectric elements 86. The second layer of piezoelectric elements is arranged in a substantially similar manner to the first layer seen in FIG.
- Primero, en un recipiente vierte el agua y ponla a hervir
- Quistes mamarios
- Consumo de medicamentos como las píldoras anticonceptivas y los corticosteroides
- Algunos tipos de broches utilizados para los aneurismas de cerebro
- (d) Whenever required, ingest only air so as to float the pipe wholly, wherein flow ceases
- Grupo de Estudio de Conducta y Demencias
- Sequedad de boca, nariz y ojos
The energy to produce the bending comes from the waves. 22, when the elastic planar members are coupled to the buoyant planar members 148.6 and 156.6 and the buoyant planar members return to their normal horizontal calm water orientation. Also in calm water the assembly would lie flat. This curvature of the elastic planar member 74.3 would be removed during assembly under the action of the weighted planar member 80.3 when it is added. However as the wave passes and the bending stresses are relieved, the energy is not completely returned to the wave as it would be with a simple elastic beam.