Cryogenic Insulation for Superconducting Transformer Project

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In summary, the conversation revolved around the best insulation options for a project involving a superconducting transformer. The participants discussed various options such as glass microspheres, pearlite, aerogel, and expanded foams, among others. They also mentioned the importance of minimizing heat loss and the potential issue of eddy currents with aluminum and stainless steel walls. Ultimately, the options of MLI and powders seemed to be the top contenders for insulation.
  • #1
mitsi_man
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I was hoping there is somewhere on here that can help
Im working on a project designing a superconducting transformer
currently i have to report possible options to use. Does anyone have any experience with cryogenic insulation if so what can you recomend.
It looks like glass microspheres or pearlite in a vacuum is going to be the best option.
also there is aerogel but I am having trouble finding a supplier, we are trying to stay away from MLI as the aluminium will induce eddy currents...
So What I am asking is does anyone have information on cost or sourcing these materials or another alteranatives?
 
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  • #2
What temperature are you trying to maintain?

If the aluminum causes eddy currents, then aren't stainless steel walls also going to be an issue? I'm assuming the insulation is going to be vacuum insulation, and you're just asking about what to put inside that vacuum. Needless to say, MLI is the best option for that but you need to be able to pull a vacuum.
 
  • #3
expanded foams
gas-filled poweders and fibrous materials
vacuum alone
evacuated powders and fibrous materials
opacified poweders
multilayer insulation

those are some of the main insulation options listed in order of increasing performance and increasing cost. not sure about cost or sourcing
 
  • #4
77 K temperature, it will be made of g10 composite and will have a vacuum,
we are trying to minimize the heat loss as much as possible as it takes about 30 times the energy to cool every watt when using cryopumps at that temperature.
ive also seen LCI layered composite insulation on the net from NASA.
it looks like it will be a choice of powder or mli.
 

FAQ: Cryogenic Insulation for Superconducting Transformer Project

What is cryogenic insulation and why is it necessary for a superconducting transformer project?

Cryogenic insulation is a type of material that is used to insulate components that operate at extremely low temperatures, typically below -150°C. In a superconducting transformer project, the transformer coils must be kept at cryogenic temperatures in order to maintain their superconducting state, which allows for highly efficient electrical transmission. Without proper insulation, the extremely low temperatures needed for superconductivity could not be maintained.

What types of materials are commonly used for cryogenic insulation in superconducting transformer projects?

The most commonly used materials for cryogenic insulation in superconducting transformer projects are aerogels, foams, and multilayered insulating blankets. These materials have low thermal conductivity and are able to withstand the extreme temperatures required for superconductivity.

How is the effectiveness of cryogenic insulation measured in a superconducting transformer project?

The effectiveness of cryogenic insulation in a superconducting transformer project is typically measured by its thermal conductivity, which is a measure of how well it can prevent the transfer of heat. Lower thermal conductivity values indicate more effective insulation.

Are there any potential risks or challenges associated with using cryogenic insulation in a superconducting transformer project?

One potential risk of using cryogenic insulation in a superconducting transformer project is the formation of frost or ice on the insulation, which can reduce its effectiveness. Additionally, the selection and installation of the insulation must be carefully planned and executed to ensure proper performance and prevent any damage to the transformer components.

How does cryogenic insulation impact the overall efficiency and cost of a superconducting transformer project?

Cryogenic insulation is a critical component of a superconducting transformer project and plays a significant role in its overall efficiency. Effective insulation can help minimize energy losses and improve the overall performance of the transformer. However, the use of specialized materials and installation techniques for cryogenic insulation can also increase the cost of the project.

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