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Comment on Banned Ozone-Harming Gas Creeps Back, Suggesting a Mystery Source

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The first thought that crossed my mind is bitcoin mines. Large mining operations using it as a better coolant.

Could be nonsense, though, if there are better coolants available today that are legal.

They would only do it incidentally while buying whatever cheap coolers, there's no good reason to seek out refrigeration systems that use CFCs.

The question is, is there a technical reason? Are modern refrigeration systems more efficient than CFC systems? If so, then it's a dumb idea. But if there's an actual efficiency gain to be had with CFCs... well.

This is not my field of expertise, and a quick googling didn't turn up really unbiased sources.

They aren't different enough to justify any hassle seeking them out.

Depends. It's not just efficiency, it's cost savings. If someone is running a large enough operation to save millions of dollars a year in cooling by using CFCs (assuming they're actually cheaper), and one is in a, um, lightly regulated industry (like Bitcoin mining) that uses massive power... well, that's a lot of justification. Small savings become big savings at scale.

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