Example of chiller part-load equation coefficients

These coefficients are taken from data provided by three manufacturers.  These values are meant to be used in the equation

Input Power = Capacity·Efficiency·(A + B·PLR + C·PLR2)

Identification Capacity Efficiency A B C
Manufacturer A 925 tons 0.625 kW/ton 0.204 0.626 0.149
925 tons 0.692 kW/ton 0.201 0.555 0.221
300 tons 0.673 kW/ton 0.201 0.602 0.185
Manufacturer B 900 tons 0.624 kW/ton .0.092 0.804 0.098
900 tons 0.673 kW/ton 0.092 0.802 0.104
Manufacturer C 900 tons 0.622 kW/ton 0.170 0.239 0.589