Fuel Cell Stack Properties

Hello,

I'm currently using SAM to simulate a PV-FC-BAT model and was wondering how the data for "Fuel consumption of fuel cell (Mcf) was calculated. I can't seem to find a consistent pattern varying the stack size and nameplate values.

Thanks, 
RQ

Hi Paul, thanks for the prompt reply. It seems that it was an error on my end, which I believe I have identified.

Thanks to your file giving me a point of comparison, I found that a different parameter was changing when stack size was varied, which I'm assuming leads to the difference in fuel consumption. It seems that when varying the stack size or nameplate parameters, the calculated rate up/down limits change, while in the file you sent I noticed they remain the same regardless of stack size or nameplate value. Are there any pointers you could give me as to why this occurs?

Thanks again,
RQ

Hi Paul,

Thanks for the info, I should've definitely noticed that! Another question, this time on the simulation side: What is the "system" referenced in the values simulated (e.g. "Electricity to grid from system" and "System power generated")? Looking at the numbers it sometimes seems as though "system" refers to all inputs summed as a whole, and sometimes it seems like it refers only to the PV input system.

Ryan