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 |