Talk:Hydrogen-cooled turbo generator

Relevance of high specific heat?
The article lists low drag, high thermal conductivity, and high specific heat as characteristics suiting hydrogen to cooling the rotor of a generator. While I can see the first two, the third is a meaningless indicator of the thermal capacity of hydrogen: it is only high because hydrogen has such a low molecular weight. If you used nitrogen in place of hydrogen the thermal capacity would be exactly the same, only drag and conductivity would suffer. Vaughan Pratt (talk) 23:50, 11 September 2016 (UTC)
 * It's the combination of the three properties. The specific heat and conductivity meets the heat removal requirement with lower windage losses due to the lower density, see the start and end of the source I'm adding soon. Jamesday (talk) 14:40, 8 October 2017 (UTC)

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