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A comment on Dutch brewery burns iron as a clean, recyclable fuel. Parent comment

Re:Dutch brewery burns iron as a clean, recyclable fuel by hinkley on Thursday November 05, 2020 @01:24PM (#25000576)
Cogeneration. It's common in cogeneration for heat to be a secondary output that makes the overall system profitable, but isn't the primary output.
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Re:Dutch brewery burns iron as a clean, recyclable fuel by fastball on Friday November 06, 2020 @11:00AM (#25008558)
But in this case heat is the primary output.
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