Differences: Fileld fraction of focused SCA and Flield optical focus fraction

Hi Paul,

what's differences between Field fraction of focused SCA and Field optical focus fraction in Trough model?

it seems that sometimes they are the same, while others are not.

kind regards
Joey 

Hi Joey,

Field optical focus fraction is a signal from the plant controller that causes the field to defocus when the TES/cycle cannot accept all of its heat output.

Field fraction of focused SCAs is the field optical focus fraction + local receiver defocus required to maintain receiver HTF mass flow rate at the “Max single loop flow rate” on the Solar Field page.

Best regards,
Paul.

Hi Paul,

thanks.

Kind regards
Joey

The attached PDF file is a transcript of a detailed conversation regarding the Physical Trough model's Field fracation of focused SCAs and Field optical focus fraction output variables and how collector defocusing is handled in the model.

 

Best regards,
Paul.