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II. Wave Water Pumps - WWP - more WWP-Construction 1. Reciprocating Wave Water Pumps a. Pumps are installed on a floating underwater structure at six (6) meters below mean sea level, with quick coupling and decoupling means for ease of installation and maintenance. The hydro turbo generator is installed at a fixed structure and anchored to the sea bed. b. The WWP needs a minimum water depth of 14 meters. c. Discharge pipes and cross dummy piping are in integral part of the mooring system. d. The WWP consists of a cylinder with a reciprocating piston moving up and down to pump a small quantity of water to a high head. A piston rod connects the float to the piston. e. For a floating structure system, the WWP is anchored to the sea bed and kept vertical by a submerged floating system. f. For a fixed structure system, the WWP is fixed to the under structure of the “Construction Unit”. g. The float may act directly on the WWP, or through a power pulley. h. A power pulley system is used to reduce the piston travel four times and reduce the length of the pump cylinder. 2. Rotary Wave Water Pumps a. Installation and mooring are similar to the WWP. b. The Major Float moves up and down with the incoming. For a 4 meter high wave the large volume Major Float develops an uplift force up to 2,650.7 Kilograms that act on the piston of a small diameter piston pump to extract an average of 119 liters per cycle to 50 m head. This is equivalent to extracting 58.14 KW from a 108 KW incoming wave WWP-Operation a. The design output of the pumps is to pump a small quantity of water to a working head of fifty (50) meters. other working heads may be provided by varying the inside diameter of the reciprocating pump or the impeller diameter of the rotary pumps. b. The efficiency of energy extraction for a set of four (4) pumps is as high as 93%. c. The rotary pumps operate at 1,800 revolutions per minute. d. The Major Float moves up and down with the incoming wave and develops an uplift force up to 2,650.7 Kilograms that act on the piston of a small diameter piston pump, or turn a rotary pump at 1,800 RPM to extract an average of 119 liters per cycle to 50 m head. This is equivalent to extracting 58.14 KW from a 108 KW incoming wave WWP-Output Output of the pumps is as shown in Table-1.
WWP Elevation View - Fixed Structure WWP Elevation View - Floating Structure
Detailed Drawings available upon request
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