I am trying to sift through how eQuest calculates a chiller's end

electrical usage and I am stuck on the fraction of hour the chiller

operates.

The DOE-2 engineers manual says it is calculated as follows:

FRAC = PL / RMIN,

where PL is the average part load ratio over the hour, calculated as:

PL = ALOAD / CAP,

where ALOAD is the assigned hourly load and CAP is the corrected

operating capacity.

RMIN is the part load ratio of rated load at which the chiller can

operate continuously.

I have used some of the calculated values in the hourly report and

cannot verify how eQuest is calculating this FRAC amount.

Does anyone have some insight?

Thanks,

Aaron Etzkorn, EIT