Dear Luis,
SAM's molten salt power tower model allows you to choose between a Rankine cycle or sCO2 Recompression/Simple cycle on the Power Cycle input page. That model also includes the thermal energy storage system model.
In the SDK, the inputs for the sCO2 cycle appear in the SDKtool module browser in rows 176 through 182. A quick way to populate the inputs in the SDK tool is to create a case in SAM, and then press the Shift-F5 keys to create a set of .lk script files that you can then open in the SDKtool's script editor. When you run the script in the SDKtool, it populates the Data Container with values that were originally in the SAM file.
IMPORTANT NOTE: In SAM 2015.6.30 r3 there is a bug that prevents the molten salt power tower model with sCO2 power cycle from running. To work around the issue, please use the appropriate link below to install SAM 2015.6.30 r1:
I would recommend installing the r1 version of SAM or SDK separately from other versions of SAM so you can continue to use the current version for other applications.
Best regards,
Paul.