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A comment on The origins of the steam engine. Parent comment

Re:The origins of the steam engine by Retric on Wednesday November 29, 2023 @05:35PM (#38466254)
What you’re missing here is pressure.

Steam turbines work not because of steam alone, you can fill a room with steam insert a turbine and nothing happens. To get them to spin you need higher pressure on the input side of the turbine than the output. If you want to have steam go up a shaft that’s going to increase the pressure on output side and thus reduce the amount of energy generated by the turbine.

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Re:The origins of the steam engine by antonhowes on Wednesday November 29, 2023 @05:43PM (#38466352)
Yes, it's the difference in pressure/heat that is exploited, as Sadi Carnot noted (by analogising the steam engine to a water-wheel exploiting a fall of water, treating it as a "fall of heat")
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