AC Electrical heating - Clay sediments

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Discussion Overview

The discussion revolves around the implications of using AC electrical currents to heat clayey soils with high moisture content and salt solutions. Participants explore concerns related to electrolysis occurring in this context, particularly with respect to the effects of AC currents at specified voltage and frequency.

Discussion Character

  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant questions whether electrolysis of water and salts is a concern when using AC currents, specifically at 230 V and 60 Hz.
  • Another participant asserts that electrolysis will indeed occur if electricity is sent through the water and that the products of electrolysis could also be a concern.
  • A third participant clarifies that electrolysis involves sending electricity through the water itself, suggesting that the method of applying electricity (through wires) may differ from direct immersion of electrodes.
  • A later reply emphasizes that the original poster did not specify using electrodes directly in the ground, implying a misunderstanding of the setup.

Areas of Agreement / Disagreement

Participants express differing views on the nature of the concern regarding electrolysis, with some affirming its inevitability under certain conditions while others challenge the assumptions about how electricity is applied in the scenario.

Contextual Notes

The discussion does not resolve the specifics of how electrolysis may occur in the described setup, nor does it clarify the implications of the electrolysis products. There are assumptions about the method of electricity application that remain unaddressed.

wildwildwest
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I am working on a project involving electrically heating clayey soils (having 55% moisture content and 0.5 M salt (nacl/KCl) solutions in the pore space.

Does anybody know if electrolysis of water/electrolyte is a concern with AC currents (230 V, 60 Hz frequencies)?

Thanks,
WWW :smile:
 
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"A concern?" You mean "will electrolysis of water and salts take place?" Yes. If that concerns you, then it is a concern. If the electrolysis products are a concern, yes, also.
 
However, electrolysis requires sending electricity through the water. You're talking about sending electricity through wires in the water. Not the same thing.
 
russ_watters said:
However, electrolysis requires sending electricity through the water. You're talking about sending electricity through wires in the water. Not the same thing.

He didn't say he was just shoving electrodes into the ground, did he --- duh.
 

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