Super Conducting Coil Properties

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Discussion Overview

The discussion revolves around the energy density of superconducting coils, specifically focusing on materials like La1.85Ba0.15CuO4, YBCO, and BiSrCaCu2O9. Participants explore the potential energy storage capabilities of these materials and the necessary spacing between coils to prevent magnetic field cancellation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant seeks to determine the energy density of superconducting materials, expressing interest in both energy and power measurements.
  • Another participant points out the distinction between energy and power, suggesting that kWh may be a more appropriate unit for energy measurement.
  • A participant mentions finding that certain YBCO compositions can achieve an energy density of 10 MJ/m³, indicating this as a benchmark in the magnetic energy storage industry.
  • There is a query regarding the necessary spacing between coils to avoid magnetic field cancellation, with an example provided for a specific configuration of YBCO wires.
  • One participant expresses concern that a lack of understanding of basic physics concepts may hinder progress in designing superconducting magnets, emphasizing the complexity of the topic.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the appropriate units for measuring energy density, and there is disagreement regarding the understanding of fundamental concepts related to energy and power. The discussion remains unresolved regarding the optimal spacing between coils.

Contextual Notes

There are limitations in the discussion regarding the assumptions made about the chemical compositions of superconductors and the specific conditions under which the energy densities are applicable. The complexity of designing superconducting magnets is acknowledged but not fully explored.

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GoldenAtlantis
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I was wondering what the energy density of superconducting coil/tape is. I essentially what to be able to say is for every centimeter or inch of this material this is the amount of energy could be in it (kW, kWh, etc). So the background; I would like for the parameters to be for (La1.85Ba0.15CuO4), YBCO (Yttrium-Barium-Copper-Oxide) as one case and BiSrCaCu2O9 to be for the second case. However, if you choose to change the chemical makeup or substitute a type of Superconductor, I would like to aim at high temperature highest energy density goal (not very rare material). The last part and harder part would be what would the necessary spacing be if you lined two of these coils up to each other so the fields do not cancel out? Thanks for help.

i.e. 5 inch length wire (1 inch squared rectangle) of YBCO has a energy
density of 1 kW of energy per inch <squared box of rectangle> (1kW/in), with a spacing of 1 inch between wires. Which means 4 wires vertically stacked would get a size of 5x1x10 (LxWxH) inches and 20 kW in potential energy.

Thanks for the help.
 
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Are you clear on the difference between energy and power? kW is a power unit...
 
Unit of Power

Thanks for the reply. I was trying to leave it open ended to measure. However, I see your point and best to use kWh as the measurement. I can work with conversions to get something. For example so far I have found certain YBCO chemical makeup can create 10 MJ/m^3, at T5. 3,600,000 J (or 3.6 MJ) – 1 kWh (kilowatt-hour). At this point I am open to energy or power suggestions. Thanks
 
GoldenAtlantis said:
Thanks for the reply. I was trying to leave it open ended to measure. At this point I am open to energy or power suggestions.
I strongly suggest a little physics study. Your confusion here is going to hurt you as you try to move forward.
GoldenAtlantis said:
For example so far I have found certain YBCO chemical makeup can create 10 MJ/m^3, at T5. 3,600,000 J (or 3.6 MJ) – 1 kWh (kilowatt-hour).
10 MJ/m^3 is a common benchmark for YBCO in the magnetic energy storage industry.

GoldenAtlantis said:
...The last part and harder part would be what would the necessary spacing be if you lined two of these coils up to each other so the fields do not cancel out? Thanks for help.

i.e. 5 inch length wire (1 inch squared rectangle) of YBCO has a energy
density of 1 kW of energy per inch <squared box of rectangle> (1kW/in), with a spacing of 1 inch between wires. Which means 4 wires vertically stacked would get a size of 5x1x10 (LxWxH) inches and 20 kW in potential energy.

Thanks for the help.
I have no idea what you are talking about in these paragraphs. Designing superconducting magnets requires a thorough knowledge of physics as well as significant engineering and cryogenics skills. We can wish for shortcuts, but there aren't any...
 
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