Hydromotor: another ecological pump

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Hydromotor: another ecological pump




by Christophe » 27/11/09, 07:25

The hydromotor is a Belgian invention (it is an elephant who will be happy) which recalls, by its principle the 2-stroke engine and by its performance, the hydraulic ram :

The patents which cover the LJ Hydromotor claim a machine essentially composed of an enclosure in which the ascent and descent of a float produce a work which drives a pump or any other mechanical application.

Inspired by the "2-stroke engine", it is the float itself which controls, thanks to an appropriate "light", the entry of water into the enclosure. It will come out through a "butterfly door" which swivels around a horizontal axis located at mid-height.

The length of the float is imperceptibly less than the interior length of the enclosure and its height will be equal to the height of the door. By cons, its width will be significantly less than that of the enclosure so that the water can descend quickly.

As long as the enclosure is filled with water, the lower part of the door will experience a higher hydrostatic pressure than the upper part.

At the start and for a fraction of a second, the enclosure is filled with water, the float is at its bottom dead center and the door is blocked by the float.

Under Archimedes' thrust that it undergoes, the float will begin its ascent by gradually closing the "light" which had allowed water to enter the enclosure.

As soon as the bottom of the float arrives above the door, it will be unlocked, it will pivot, the water will escape and the float will come down, forcing it to close.

During its descent, the float will stop blocking the inlet "light" and water will reenter the enclosure.

Once the float returns to its bottom dead center, a new cycle will start instantly.


More:

http://www.hydromoteur.com/fonction.htm
http://www.hydromoteur.com/applications.htm
and a video http://www.hydromoteur.com/video.htm

Performance of the model "HM 120"

This machine occupies 1 m in length and 50 cm in width on the ground. Its height, without the pump, is also 1 m.

The float, 0,3 m high, releases a net thrust of 120 kg and its stroke is 0,3 m, or, at each cycle, a work of 360 Nm.

At the rate of 8 cycles / min, it will therefore produce:

8 cycles / min x 60 min x 24 hx 360 Nm,

or 4.147.200 Nm per day!


In other words it develops a gross power of: 8/60 * 360 = 48 W

Which can also be obtained in this way: P = V * F = 0.3 * 8/60 * 1200 = 48 W
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by elephant » 27/11/09, 09:47

Indeed, that pleases me, because this principle had already been imagined a good twenty years ago by an inventor of the surroundings of Eupen-Verviers: it was about the "pump monteau"

This industrialization project had at the time been supported by Minister Busquin (Doctor of Physics, Minister of Scientific Programming) and the validity tested by the Von Karman Institute of Rhode Saint Genèse. The Monteau pump was a little different and more difficult to make because it was a sealed piston. The hopes of seeing this product impose itself in the developing countries were immense, but apparently the business did not follow: the production was probably much more expensive than that of the hydromotor, because a piston-cylinder assembly of this size requires significant and delicate machining.

Basically, this pump would answer a lot of irrigation problems, but is it really cheaper than a PV connected to a 12 volt pump?
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by elephant » 27/11/09, 09:55

Last-minute:

I have just contacted the inventor, Monsieur Jourdain.
The new 10 m³ / day model at 10 m in height should be marketed around 750 euros excluding VAT.

I do not rule out, because he did not propose it, to push a point as far as his home to make a small report, but not before 10 days from here
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by Christophe » 27/11/09, 10:03

It's not expensive but must be added the costs of "civil engineering" on the stream!

In any case the idea is not bad even if the raw power (if I am not mistaken) is low.

According to the folder that I have the dealer is champlon ... but I do not know if it is the only one
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by elephant » 27/11/09, 11:07

As usual, there are no perfect solutions:

a PV panel 12 volts of 150-200 euros and a pump of 25 euros at Conrad do the same job.

But, there are other perspectives:

- Local production in developing countries (they generally have very good ironworkers)
- 24 hour operation
- Use beyond the 65th parallel
- Possibility of directly producing air for aeration of ponds
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by Christophe » 27/11/09, 11:23

elephant wrote:a PV panel 12 volts of 150-200 euros and a pump of 25 euros at Conrad do the same job.


Uh for the pump at 25 € which makes 10 m3 / day continuously you have to give me the model because I don't know any.

In any case, its lifespan will be considerably less than that of the hydromotor!
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by elephant » 27/11/09, 12:14

site conrad.fr, "pump" in the search engine: there are other bigger models
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by Christophe » 27/11/09, 12:17

Thank you for taking me for an idiot: if if I know conrad ... :frown:

Only their shit pump at 25 € it does not last 100h of life ...
: Cheesy:
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by elephant » 27/11/09, 12:20

Excuse me, I did not read the 100-hour line in your speech. You are probably right.
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by elephant » 27/11/09, 12:24

I have just re-examined the principle diagram of the animation: in fact all the genius is the revolving door: a pity that it requires to make a square tank.
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