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Temperature benefit of Evacuated Solar Tubes

bobbyF

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Joined
May 3, 2021
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Hi there,

From what I've read, typical temperatures of Evacuated Solar Tubes used in Steam Turbine Plants (using solar trough linear concentrators), reach about 200 degrees Celsius (392 F).

Is there any benefit to increasing this temperature any further? If for example the temperature was 500C, or 1000C, what would this mean in terms of efficiency or power output capacity for the steam turbine or the plant power generation..?


Cheers.
 
Hi there,

From what I've read, typical temperatures of Evacuated Solar Tubes used in Steam Turbine Plants (using solar trough linear concentrators), reach about 200 degrees Celsius (392 F).

Is there any benefit to increasing this temperature any further? If for example the temperature was 500C, or 1000C, what would this mean in terms of efficiency or power output capacity for the steam turbine or the plant power generation..?


Cheers.
There's a theoretical limit to efficiency of a heat engine. This limit depends on the upper & lower temperatures of the cycle. So, higher the difference, higher the efficiency. See https://en.wikipedia.org/wiki/Carnot_cycle
 
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