Collecting Electrostatic Charge

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Discussion Overview

The discussion centers on methods for collecting electrostatic charge from particles in an airtight system, exploring potential collectors and the characteristics of the medium involved, which may be air or a denser gas. Participants consider various approaches and technologies related to electrostatic charge collection.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the best method to collect electrostatic charge from particles, suggesting the use of electromagnetic means that do not disrupt gas flow.
  • Another participant mentions the Van de Graaff generator as a model for charge collection, highlighting its use of sharp points for charge transfer to the air.
  • A later reply reiterates the Van de Graaff generator example and notes its reliance on brushes contacting a belt, indicating a specific design consideration for the project.
  • Another participant discusses the importance of sharp points in charge collection, referencing lightning arresters and suggesting that applying pressure to the medium may enhance charge collection, with a recommendation to explore Paschen’s Law and the Paschen Curve for further details.
  • One participant asks about potential applications for the charge collection method being discussed.

Areas of Agreement / Disagreement

Participants express various viewpoints on the methods and technologies for charge collection, with no clear consensus on the best approach or specific requirements. Multiple competing ideas remain regarding the effectiveness of different collectors and the influence of the medium.

Contextual Notes

Participants reference specific principles such as charge density at sharp points and Paschen’s Law, indicating that the discussion may involve complex physical concepts that are not fully resolved.

Who May Find This Useful

Individuals interested in electrostatics, charge collection technologies, or applications in airtight systems may find this discussion relevant.

heerojyuy
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What is the best way to collect electrostatic charge from particles in an airtight system?
The particles will pass over a collector (that which we are trying to determine), discharge and be circulated away.
I'm just not exactly sure what to use.

It will either be just plain air,
or possibly a more dense gas.

If you need further info, I'll try to get that to you.Perhaps something electromagnetic, but not strong enough to interfere with the flow characteristics of the gas.

The charge would then be fed into a capacitor(s) and accumulated for use elsewhere in the apparatus.
 
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The best example for electrostatic charge collection & distribution is vandegraaff generator. in this actually charges are not stored it is transferred to the air and it is mainly deals with sharp points. good example of static collectors is needle pointed copper combs. study about vandegraaff generator this may help you.
 
KnowPhysics said:
The best example for electrostatic charge collection & distribution is vandegraaff generator. in this actually charges are not stored it is transferred to the air and it is mainly deals with sharp points. good example of static collectors is needle pointed copper combs. study about vandegraaff generator this may help you.

Actually, this project is designed around a Van De Graaf Generator.
But the generator relies on the brushes contact to the belt.
 
I am not getting exact requirement of yours, i hope you know that charge density at the sharp points are more, that is why we use sharp points to collect charges for example Lightning arresters.
If you have a medium that has a static charge (we will assume it as air). i don't know exactly but i think you can also increase collection of charges by applying little pressure to the medium (you can read Paschen’s Law and “The “Paschen Curve” for this detail).
 
What applications could this be used for?
 

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