3 ms·
> (the temperature of the steam doesn't really matter as far as driving turbines) This goes against everything I seem to remember from thermodynamics - superhe
by SECProto 7y ago
> (the temperature of the steam doesn't really matter as far as driving turbines)
This goes against everything I seem to remember from thermodynamics - superheated steam is exactly what is used for driving turbines, with saturated steam as the cold side outlet of the turbine. It's what makes district heating useful - there is still heat energy left in the saturated steam, too low grade for driving turbines, but still useful for heating apartments etc
- stickfigure 7y agoIndeed, superheaters have been used since the early 1900s to dramatically increase the thermal efficiency of steam engines. https://en.wikipedia.org/wiki/Superheater https://en.wikipedia.org/wiki/Superheater Also, IIRC superheaters are especially important in turbine applications because water droplets damage the blades.
- mcguire 7y agoWhat's your turbine pressure? Steam at 700°F is apparently 3000psi, which is the highest temperature/pressure I can find. Edit: Best Q/A thread I've seen recently: https://www.researchgate.net/post/At_what_temperature_water_will_decompose_to_Oxygen_and_Hydrogen https://www.researchgate.net/post/At_what_temperature_water_... "We need this value to be more specific numerical form to utilize in design of high temperature and high pressure steam boilers and turbines working at 300 bars."
- deleted 7y ago[deleted]