Cycle electrical power output (gross) | (MWe) greater than design gross output

  • slrpp
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03 Sep 2019 09:37 #7641 by slrpp
Hello, after simulating a 50 Mwh CSP trough plant, with no storage, I am getting a "cycle electrical power output (gross) greater than the parameter Design gross output, even when the Max turbine over deseign operation is set at 1.
I have tried several pairs of data: 50 Mw and 1.04, 52.4 and 1 and so more, getting values like 57 or even 62 Mw for gross outputs. I was able to limit the gross power to 52,4 by setting the design gross outputthefinally to 47,7 and the  Max turbine over deseign operation to 1.

Thanks

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  • pgilman
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03 Sep 2019 15:23 - 03 Sep 2019 15:24 #7647 by pgilman
Dear Raul,

The system should operate at the design point (50 MW gross in your example) under design conditions for incident irradiance, loop inlet and outlet temperature, cycle HTF mass flow rate, etc. that you specify as inputs.

In the simulation results, the exact design conditions are likely to be rare given the ambient conditions from the weather file. If you are trying to design a system that does not exceed a particular power output level, you should adjust the design parameters so that the system operates as you expect.

Best regards,
Paul.
Last edit: 03 Sep 2019 15:24 by pgilman.

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  • slrpp
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04 Sep 2019 05:42 #7653 by slrpp
Thanks for the reply. I was running the Physical model. Once I changed to the empirical, the max output power was capped at what I asked. 

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