Water Chiller :
The typical design only optimizes a chiller plant for maximum load with the cooling towers and the condenser water pumps sized and set-up for maximum load operation and design conditions. While the chiller may have good part load performance, the rest of the plant is not effectively "re-tuned" to operate at part load.
The classic chiller plant design only uses a control algorithm based on a simple temperature measurement, set-point, and control mechanism to control cooling tower operation.