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ReasonablyBadass t1_j99eja2 wrote

Reply to comment by Herbert-Quain in Scientists create carbon nanotubes out of plastic waste using an energy-efficient, low-cost, low-emissions process. Compared to commercial methods for carbon nanotube production that are being used right now, ours uses about 90% less energy and generates 90%-94% less carbon dioxide by Wagamaga

Efficiency has nothing to do with how much energy you need. It's about the ration between resource use and end product.

If other processes need less heat but produce a lot of unusable waste, they are less efficient.

Edit: also,flashing, afaik, means for only a very short amount of time. Might not be all that mich energy overall, actually

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