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Interesting. That's around the liquid hydrogen range - still cheaper than helium, but probably not as easy to work with as nitrogen. I guess their requirements

Interesting. That's around the liquid hydrogen range - still cheaper than helium, but probably not as easy to work with as nitrogen. I guess their requirements for critical field were high enough that the 77K GdBaCuO performance wasn't good enough?

Dylan16807 8y ago
Going by the link stephen_g found, it has around 1.8x the needed capacity at 30K, 1x at 50K, and 0.2x at 77K.
ginko 8y ago
Given the spectacular ways wind turbines can fail, I'm not sure if I'd like liquid hydrogen to be involved there.
- rbanffy 8y ago
  It'd probably evaporate before it reaches the ground
  - nine_k 8y ago
    Which is the scary part. A mix with air us explosive.
    - rbanffy 8y ago
      It should also dissipate very quickly. There would be a brief window when it'd be dangerous, but you'd need as little wind as possible. The volumes used in these chillers are relatively small.