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#4623 11/24/05 09:13 AM
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In this post I will describe a hydraulic system. For argumentative reasons, please observe that non-compressable means very limited compression to the point that the numbers are irelavent.

As in all Hydraulic systems you need a pump, an actuator, and a resivior.

The actuator in this case will be a container that is filled with piezoelectric material and hydraulic fluid so that there is no air in the container once connected to the hydraulic system, forming a hydrostatic environment. The piezoelectric material is connected to a volt meter.

The pump is connected through a switching valve to both the container with the piezoelectrics and the resevior. There is of course a releif valve so that the pump does not burn out, or rupture a fluid line.


When the pump is switched on with the valve set in the resevior position there is bearly any pressure in the system, as the flow from the pump is going directly into the resivior.

When the valve is switched to the container flow position, the pressure spikes to the relief valve setting, as the fluid has nowhere to go, the pressure builds until the emergency valve is opened.


I'd like some thoughts on my little setup here. A main area of interest should be the volt meter attached to the piezoelectric material.


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How much volume redistribution or (thrust)(distance) can a piezoelectric stack deliver? I hope you don't plan to move much fluid volume. OK for microhydraulics; not practical for backhoes.


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Quote:
Originally posted by Saryctos:
As in all Hydraulic systems you need a pump, an actuator, and a resivior.

The actuator in this case will be a container that is filled with piezoelectric material and hydraulic fluid so that there is no air in the container once connected to the hydraulic system, forming a hydrostatic environment. The piezoelectric material is connected to a volt meter.

The pump is connected through a switching valve to both the container with the piezoelectrics and the resevior. There is of course a releif valve so that the pump does not burn out, or rupture a fluid line.

I'd like some thoughts on my little setup here. A main area of interest should be the volt meter attached to the piezoelectric material.
Please be more explicit in what you are trying to achieve. Your technical description is disjointed
>a container filled with piezo-electric material??
>Are you trying to produce a piezo voltage by
using alternate hi-low pressure from the oil pump?

Or as Uncle Al suggests, a small micro-pressure
in oil, by feeding a voltage to a piezo stack?

In either case the oil accumulator will even out your oil pump pressure. Resulting in no output from the piezo?? An accumulator normally allow you to switch off the oil pump until the pressure drops to below a preset point.
The Piezo (stack?) would require a fast alternating and vibrating pressure source thru the oil, to produce an AC voltage output. (Is that what your switching valve does?)
Or an AC voltage input to your piezo to produce a micro-AC-pressure in the oil.
Clarify your idea, or we cannot help further.


.

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"You will never find a real Human being - Even in a mirror." ....Mike Kremer.


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Thank you for your comments.

The idea behind this device was to generate electricity from the piezoelectric material by oscilation of the switching valve combined by way of the pressure spikes.

Unfortunately I do not know any hard details on the elasticity or the electrical output of a real world piezo material. But I do know that the energy is created during a change in pressure on the piezos. So, if the valve were to be switched repetedly, the spikes in high and low pressure would be creating voltage changes during the transition.


The main thing that is to take advantage is the static fluid. To overcome the ammount of input energy, you simply add another piezoelectric into the container to produce more output electricity. Since the piezo is no more compressable than a fluid, the ammount of energy needed to run the pumping/switching system remains the same. This 'should' allow for the ability to increase the ammount of piezoelectric material without needing a larger input force to maintain the same ammount of force, which will generate a higher output than than input required to run the hydraulics. I didn't really want to start off by saying that this was a design for a "free energy" machine, as that would easily discourage anyone from reading about it. Although I would agree that my vague introduction was not all that pleasing either. =/ I ask you please to review the facts, and to the best of my knowledge, I have not been given a reason why it will not work, other than, "It breaks that law of thermodynamics idiot!"


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