Supercritical CO2 for Molten Salt Power Tower plants.

Dear Paul,

I'm trying to simulate Gemasolar plant (Sevilla, Spain) with different power cycles. Now I'm trying the recompression sCO2 cycle, but I found this error when calculating the design point:

exec fail(sco2_csp_system): The compressor inlet temperature input was 87 [C]. This value was reset internally to the max allowable inlet temperature: 70 [C]
The turbine inlet temperature input was 35 [C]. This value was reset internally to the min allowable inlet temperature: 300 [C]
To solve the cycle within the allowable recuperator conductance, the design cycle thermal efficiency, 0.445, must be at least less than the Carnot efficiency: 0.401291

I suppose that I'm not misunderstanding some inputs:
Air cooler approach temperature refers to "compressor inlet temperature"?
PHX approach temperature refers to "turbine inlet temperature"?
Furthermore, any advise about any other cycles that I could simulate in SAM por MSPT plants would be welcomed!
Thanks for your help!

Javier.

Dear Javier,

Those input variables are defined in the SAM help system (CSP Power Tower, Molten Salt Tower, Power Cycle, Supercritical Carbon Dioxide Power Cycle).

Best regards,
Paul.