WO2008064691A1

WO2008064691A1 - Wave energy device

Info

Publication number: WO2008064691A1
Application number: PCT/EG2007/000038
Authority: WO
Inventors: Mamdouh Ali Mahfouz
Original assignee: Mamdouh Ali Mahfouz
Priority date: 2006-11-27
Filing date: 2007-11-10
Publication date: 2008-06-05
Also published as: EG26615A

Abstract

A floating cylinder (2) is driven up and down by sea water waves (1 ). Said floating cylinder (2) actuates a submersed non return valve (7) and a flexible tube (8) and pumps water in a fixed tube (5) up to a water tank (4).

Description

USING SEA WAVES TO GENERATE POWER

Technical Field:

Power Generation

Background Art:

Nothing

Disclosure of Invention;

Using the sea waves to push up quantity of water (Q) to height (H) which can be used to fall down to produce power.

WATER PULLING SET TWPS)

Drawing (1-1) is showing the (WPS) as a set, and drawing (1-2) is showing the items consisting the (WPS).

1 - wave ( 1 ) is pushing up the floating cylinder (Fl) -it is an empty closed cylinder - for height (W)

2- When (Fl) go up it pull the movable part (3) up -(Fl) is connected to movable part (3) with the coupling (4)

3- Movable part (3) is sliding on the fixed pipe (5) which allows sliding up and down as per drawing.

4- The lowest part of the moving part is item (6) , it is connected to the non return valve item(7) .it pull item (7) up and item (7) push item(8) - the diaphragm- up.

5- When item (8) go up the water pressure increases. The pressure close item (J) and open item (9) which are fixed to the pipe forcing the water to go up in the pipe (H) height.

6- When (F) goes down -after the wave pass- all the moving parts go down and the pressure inside the diaphragm go down making item (7) open and item (9) closed and water go in. 7- Repeating this gives quantity of water (Q) at height (H).

The (WPS) is related to some parameters:

- The floating cylinder (F) its diameter (Dl) and its length

(L).

-the wave height (W).

ASSAMTIONS:

L (the cylinder length) = 400 cms

D 1 (the cylinder diameter) = 100 cms

D2 (the fixed pipe diameter) = 50 cms W ( the wave height) — 60 cms

Nl ( number of ^{^} waves in min.) = 10 wave N2 ( number of WPS in system) = 4 wps

__ TT(Pl)² XL

^{Force l} - iooo

= 12571 kg

This force is the act of the wave on the cylinder.

Force 1 is the same force pushing the water in the fixed pipe up with height (H).

ττ(D2)² XH Force 1 = 12571 kg = _{±m Q}

12571X1000

H = ^_n ^_n = 1599 cms

TT XSO XSO

To know the quantity of water (Q)

π(D2)² XΪV jτXSOxSO xόG Q = 1000 1000

=471 litre Considering 10 waves / min

471 X10

Q = — ^ = 78.5 1/3

So we have (Q) = 78.5 LfS

at height (R) = 16 M

Note 1 :

Item (10) is a submersed balloon connected to the moving part. The force of this balloon is nearly equal to the load of the moving part.

(Force of balloon is little less than the load of moving part to allow it to go down)

Note 2:

The height (H) in design should be little less then the result of (H) in the equation to allow (F) to go up.

HOW TO USE:

A STEEL BASE (PLATFORM) TO BE IN THE SEA IN A PLACE WITH SUTABLE WAVES AS PER DRA WING (2). FIXED ON THE BASE THE (WPS) WHICH IS PULLING WATER TO THE COLLECTING TANK AS DRA WING (3) THE WATER DROPES FROM THE TANK (Q). THE TANK HIGHT IS (H). THE (Q₅ H) IS PRODUCING ELECTRICTY BY A WATER TURBIN AND ELECTRIC GANERATOR.

EXAMPLE FOR 75 KW POWER STATION:

L = 600 cms Dl = 80 cms D2= 45 cms W= 80 cms Nl = 12 wave/min _ (Dl)² XL _ 80² X600 W ~ (D2)^{2 ~} 45^{2 χ}lO(f ^{18*9 m}

= 60.8 feet

^ τr(D2)² xW JΓ(45)² X80

Q ⁼ 1000 " 1000 = ^{509 L/wave}

3960

1616X60 .8

= 24 .8 HP

3960

24.8

= 18.5 KW 1.34

### CONSIDERING 8 (WPS)

### CONSIDERING 50% LOSSES

Brief Description of Drawings

DRAWING(I -n&q -2)

THE WATER PULLING SET (WPS) WHICH CONSISTING OF THE

FOLLOWING ITEMS CONNECTED TO EACH OTHED AS ONE SET

AS PER DRAWINGS:

1 - Wave with height (w).

2- Floating cylinder (Fl).

3- Moving part.

4- Connection bet. (Fl) and moving part

5- Fixed pipe

6- Moving part bas

7- Cv. down the diaphragm allow the water to go in.

8- Diaphragm made of suitable rubber.

9- Cv. above the diaphragm allow water to go out.

10- Submersed balloon to make balance. DRAWING (2)

1-A steel base fixed in a place with a suitable waves.

2- Steel frame to fix the pipes to it.

3- Base for the water tank.

4- Base for the generator.

5- Base for the water turbine.

6- Ground under the sea.

DRAWING (3)

1- The base feet.

2- Water pulling set.

3- Fixed pipe.

4- Water tank.

5- Pipe taking water from tank to turbine.

6- Water turbine.

7- Electric generator.

8- Cable to transfer electricity.

DRAWING (4)

1- Nun return valve.

2- Nun return valve.

3 - Base of the moving part. 4- Rubber diaphragm (half ball)

Claims

ELEMENT l :

THE WATER PULLING SET (WPS) WHICH CONSISTING OF THE FOLLOWING ITEMS CONNECTED TO EACH OTHED AS ONE SET AS PER DRAWINGS:

11 - Floating cylinder (Fl)

12- Movable part (3)

13 - Connection between (Fl) and part (3 )

14- Fixed part (5)

15 - Movable part base

16- Non return valve (7,9)

17- The diaphragm.

18- Submersed balloon. (Above connected as a set)

ELEMENT 2:

Drawing (1-1) the water pulling set. ELEMENT 3:

Drawing (3) power generating system (from sea waves) ELEMENT4: Drawing (4) the rubber half ball (the option of the diaphragm)

ELEMENT5:

The way to produce power from the (WPS): - Wave (1) pull up the cylinder (Fl) for height (w) - The movable part which is connected to(Fl) go up for height (W) - Movable part is allowed to slide no any fixed item up and down only. - Movable parts base (6) pulls the nun return valve (7) up and the it pull the diaphragm up. - Pressure inside diaphragm close c.v.(7) and open c.v.(9) and push the water up to the fixed pipe. - After the wave (Fl) go down all the parts go down. Vacuum inside diaphragm open c.v. (7) and close c.v. (9) and water go inside the diaphragm. - Repeating give us (Q) of water on head (H).