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Two Rated capacities of the same chiller is reported in the E+ tabular report (I'm not qualified to upload figure).

The 1st one is under Report: Equipment summary / For Facility / Central Plant

Type Reference Capacity [W] Reference Efficiency [W/W] Rated Capacity [W]

CHILLER ELECTRIC EIR 1 Chiller:Electric:EIR 1540500.38 2.93 1537481.56

Note the Reference capacity is slightly different from Rated Capacity.

However, the 2nd one under [The same Report] / chillers shows the same value.

Type Reference Capacity[W] Reference Efficiency [W/W] Rated Capacity [W]

CHILLER ELECTRIC EIR 1 Chiller:Electric:EIR 1540500.38 2.93 1540500.38

The chiller reference capacity is autosized.

I tried to find out how is Rated Capacity calculated by E+, but failed. (The source code is quite complex) Anyway, we may focused on the Reference Capacity, which is well explained by the Input Output Reference. If some could explain how the 1st Rated Capacity is calculated, it is helpful.

Two Rated capacities of the same chiller is reported in the E+ tabular report (I'm not qualified to upload figure).

The 1st one is under Report: Equipment summary / For Facility / Central Plant

Type Reference Capacity [W] Reference Efficiency [W/W] Rated Capacity [W]

CHILLER ELECTRIC EIR 1 Chiller:Electric:EIR 1540500.38 2.93 1537481.56 report.

Note the Reference capacity is slightly different from Rated Capacity.

However, the 2nd one under [The same Report] / chillers shows the same value.

Type Reference Capacity[W] Reference Efficiency [W/W] Rated Capacity [W]

CHILLER ELECTRIC EIR 1 Chiller:Electric:EIR 1540500.38 2.93 1540500.38

The chiller reference capacity is autosized.

I tried to find out how is Rated Capacity calculated by E+, but failed. (The source code is quite complex) Anyway, we may focused on the Reference Capacity, which is well explained by the Input Output Reference. If some could explain how the 1st Rated Capacity is calculated, it is helpful.helpful. The results before the question was edited was a big idf. I created a small project for test and the phenomenon is the same. I'm not able to use online drives, but I upload the idf, results and epw files to the github. The EnergyPlus version I use is 23.2.0.

Two Rated capacities of the same chiller is reported in the E+ tabular report.

Note the Reference capacity is slightly different from Rated Capacity.

However, the 2nd one under [The same Report] / chillers shows the same value.

The chiller reference capacity is autosized.

I tried to find out how is Rated Capacity calculated by E+, but failed. (The source code is quite complex) Anyway, we may focused on the Reference Capacity, which is well explained by the Input Output Reference. If some could explain how the 1st Rated Capacity is calculated, it is helpful. helpful.

The results before the question was edited was from a big idf. I created a small project for test and the phenomenon is the same. I'm not able to use online drives, but I upload the idf, results and epw files to the github. The EnergyPlus version I use is 23.2.0.