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[lba]

Hi,

I post a new message maybe easier to understand (I hope).
Goal: Move pieces 2,4,6 in D1 direction and pieces 3,5,7 in D2 direction without left forces. Suppress left force is difficult but not impossible: put water and fixe pressure in pieces.

Description:
Fig. 1 is top view (like you can see above the sea)
Fig. 2 is sectional view of fig.1, we can see where we cut in fig 1 with the red line. Arrows show how we see the sectional view.
Fig. 1 and Fig. 2: I draw initial position. We have 7 triangles pieces (number 1 to 7, the number can be different). First piece is fixed, others (2 to 7) move to the right. Between each pieces we put P0 pressure. P0 pressure is air pressure with P0<<Water_Pressure. I have draw baskets which can retain P0 pressure. In green, this is areas with P0 pressure. Create P0 pressure areas don't need energy because each area is extremely thin, like for example: 0,0000000000001 meter, in theory this don't need energy, in practise a little. The form of pieces is a triangle (top view). When we see this system like this, in the top view, pieces (2,4,6) want to move in the D1 direction and pieces (3,5,7) want to move in D2 direction.

Fig. 3  (I don't draw baskets) We want to move pieces at the right. The problem is that pieces want to move at the left (forces want !) and like this don't give energy.  Fig. 3: if we use block piece, top of the figure, we can see a left force, we this the system can't give energy. In the middle of the figure with water in the piece, a left force is always present. In the bottom, we add a fixed pressure with water in the piece for compensate the pressure with the next piece. We put:

   piece 6: pressure water + d (d pressure is a pressure give by 1/2 height of piece)
   piece 5: pressure water + 2d
   piece 4: pressure water + 3d
   piece 3: pressure water + 4d
   piece 2: pressure water + 5d
   piece 1: pressure water + 6d (fixed piece)

Like volume of each piece is constant, add constant pressure don't need energy. But we need to compensate Fa1-1 with Fa1-2. Compensate Fa2-1 with Fa2-2 etc (we write FaX-1 with FaX-2, X is a number 1 to 6). Surface FaX-1 and FaX-2 are special surface and compensate together pressure. With this, we don't have a left force, only a force on piece 7 (see fig.4) but at this pressure force is very small compared than water pressure.


Fig. 4: this is the Fig.1 when pieces have moved. We can see the force which is on piece 7. The goal  with this system is to take energy in a depth H and to transfer it to a smaller depth (H/Number).

Fig. 5: (I don't draw baskets, but there are) we can see the system when it has moved in the sectional view. We can see d pressure, constant pressure in pieces, couple of FaX-1/FaX-2 and left force on piece 7.

Fig. 6: we can see the surface FaX in initial position, the surface is a floatable surface. I don't draw all technical details but it's possible to do. If you need more detail don't hesitate.

Fig. 7: we can see the surface FaX after moved, note the volume of the piece is always constant.

Fig. 8: When the system have moved, it give energy. For return to initial position: it's simple, we cut all P0 pressure, in fact these areas are pratically 0 (don't need energy in theory a little in practise). We cut all mechanical link with FaX-1/FaX-2  (don't need energy in theory, a little in practise). We block all surfaces FaX-1 or FaX-2 in the piece. We can return to the initial position without need energy. All small energy give are nothing to compared with energy recover.

The cycle can repeat.

What do you think about this ? Maybe I have write something false, help me to find it !

Ludovic

[lba]

I think this system give energy like that, I don't find my mistake 

If the lenght of surface FaX-1/FaX-2 (X, number 1 to 6) change, the efficiency is not perfect (100%) because a left force appear gradually when surface Fa decrease (but give energy even so). We can attached mechanically couple of surfaces FaX-1/FaX-2 in the all lenght, and move the couple (in the same time) when it is necessary (for X = 2 to 6). I draw Version2 of the figure 4, I see I forget to show FaX-1/FaX-2 in the figure 4, in this figure I show surfaces with fixed lenght (better efficiency) with Fa1-1/Fa1-2 when the system have moved.

Don't hesitate to ask question if you don't understand.
Have a good day.

Ludovic

PS. In figures 1 and 2 I don't draw surfaces FaX-1/2 but they are ! Idem with the pressure Water+N*d they exist. I add Version 2 of figure 1 and 2.

I add a gif file to show how the pieces move. The up figure is above view (fig.1) and the bottom figure is a sectional view (fig.2) . I think the system can move like that. Others possibilities are available.