Antifreeze. CSP Trough Empirical, Commercial

Dear Paul,

I am working with CSP Trough Empirical, Commercial, with 2012.11.30 Version.

I have a question about antifreeze.

I have seen that there are the next parameters:
Antifreeze pumping parasitics (MWh), hourly
Solar field freeze protection energy consumption (MWh), hourly
TES freeze protection energy consumption (MWh), hourly
Tank freeze protection energy(MWh), hourly

But, only the first has a value. Ther others are always zero.

I have changed in "Solar field"-->"Solar field HTF type" in order to have higher values of "Field HTF min operating temp" and have values in all the parameters that I have indicated, but they did not change the value.

What can I do in order to have values of consumption?

Thank you very much.

Dear Pierre,

I have confirmed this behavior in the current version of SAM (2013.1.15), and have asked the CSP modeling team to investigate. I will let you know when I hear more.

Best regards,
Paul.