I am trying to calculate/estimate the electricity consumption by a chiller based on hourly outputs.

First, I plugged the cooling coil load on loop and corrected EIR in the the equitation
Elec= CAP hour* EIR*EIR(t1,t2)*EIR(PLR,dT)/3413 Btu/kW

but the calculated annual electricity consumption was not even close to the numbers reported under Space Cooling Enduse.

Then, I used PLR and operating chiller capacity at current condition to calculate CAP hour (instead of using the cooling coil load on loop), but calculated numbers did not make any sense.

Has anyone done similar calculations? I am sure I am missing something very simple here, but what?

Any suggestions are very appreciated

Ana