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Why are maglev trains still rare?
(lemmy.ml)
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this post was submitted on 08 Sep 2023
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It's more than that - doubling air resistance only doubles the energy use if it's the only inefficiency on the train (e.g., no losses in the magnets, HVAC, lighting, etc.). Add onto that the fact that you're basically eliminating rolling resistance from traditional trains when switching to maglev, and the expected outcome should be much less than double.
Finally, the most important part, each high speed rail route of any meaningful distance has the opportunity to displace a certain amount of air travel, so big picture, HSR results in a significant decrease in overall energy consumption.
Is that factoring in the always on cooling of the magnets?
Here's an article about the subject, paper linked at the bottom of the article: https://phys.org/news/2010-12-high-speed-pollute-percent-traditional.html
Thx, as I understand it, this is calculated for traditional railway technology and does not have anything to do with to maglev.