A plurality of cleats 30 are securely attached to the bottom surface of the reaction plate 28 and pressed into the sea bed, as indicated by reference numeral 29, by the weight of the reaction plate 28. The purpose of the cleats 30 is to discourage sliding of the reaction plate over the sea bed 29 due to unbalanced horizontal force components which act on the reaction plate 28 during operation of the device.
FIG. 7 is an elevational view of the mooring system of FIG.
In the preferred embodiment the pump means comprises a plurality of pistons-and-cylinders, the pistons of which are connected to the mooring means. The device described above requires a mooring system, not only to maintain a desired physical location at sea, but also to allow proper functioning of the device. However, a device according to the present invention requires a large vertical mooring force for its proper functioning. FIG. 7 is an elevational view of the mooring system of FIG. As the crest of the wave passes, and the platform begins to settle into the trough of the wave, the slack in the mooring lines is accommodated by the flow of hydraulic fluid from the low pressure reservoir 6, through the check valves 5 and into the hydraulic cylinders 4, causing retraction of the pistons into the respective hydraulic cylinders and tightening of the mooring lines. Other tests have been conducted which show that the optimum hydraulic fluid pressure in the high pressure reservoir 8 for maximum energy conversion efficiency depends upon wave height, wave length and water depth.
FIG. 4 shows graphically the result of such tests where various platforms of high natural frequency were employed to show the effect of platform length on power conversion efficiency. This signal can be processed to determine such information as mean water depth, mean wave height, mean wave period and mean wave length as well as wave height, period and length statistical spectra. The sea condition monitor 15 transmits information such as wave height, wave length, wave period and water depth to the intelligent controller 12, which regulates the flow of sea water from the low pressure reservoir 6 through the reverse osmosis system 35 so as to maintain pressures in the two reservoirs 6, 8 that will produce optimum energy conversion efficiency regardless of varying sea conditions. The other half-cycle is used for transferring the extracted energy stored in the high pressure reservoir 8 to the low pressure reservoir 6 as pressurized sea water and for resetting the device for the next following half-cycle.
Dolor Neuropatico Curso
The other half cycle is used for resetting the device for the next following half cycle. The other is fresh water which is the product produced by the device and can be put to whatever purpose one chooses. Two fluid streams are produced by the reverse osmosis unit 35. One is concentrated salt sea water which is returned to the sea. Dolor y rigidez lumbar . SUMMARY OF THE INVENTION According to the present invention there is provided a device for producing fresh water from salt sea water by utilizing the hydrodynamic energy of waves, comprising: a buoyant platform; mooring means for mooring the platform at sea; pump means mounted on the platform and connected to the mooring means; a reservoir for containing pressurized sea water connected to the pump means; a desalination system for extracting fresh water from the sea water connected to the reservoir means; hydraulic flow control means for causing the pump means to pump sea water into the sea water reservoir, as motion of the buoyant platform is produced due to the passing of waves beneath it; measuring means for measuring parameters of the sea adjacent the buoyant platform; and a control device connected to control the pressure in the sea water reservoir and flow of sea water from the reservoir through the desalination system in dependence upon the parameters of the sea as determined by the measuring means.
- Agudo: Condición repentina y urgente con síntomas intensos
- Method for hiding
- Un omóplato más prominente que el otro
- Tocofobia (miedo al embarazo)
More specifically, the air-cushioned high pressure reservoir 8 is directly connected to the shaft end of the hydraulic cylinders 4 and acts as a gas spring, always tending to draw the piston shafts back into the cylinders and tighten the mooring lines. The details of the internal portions of the hydraulic cylinders 4 are also unchanged. However, filtering of the sea water is necessary to avoid fouling. However, any other incompressible fluid could be used if adequate means for collecting leakage flows is provided. While FIGS. 1 and 2 show the hydraulic cylinders 4 in a horizontal attitude, a vertical attitude is also possible, and eliminates the need for the guide pulleys 3. However, a gimballed support system may be necessary if the cylinders 4 are in the vertical attitude to reduce or prevent large bending moments on the shafts of the pistons during operation. 9. In this embodiment, the platform 1, the mooring lines 2, the guide pulleys 3, and the anchoring means are unchanged.