GPS-X Technical Reference

369 Operating Cost Models
CALIBRATION OF OPERATING COST MODELS
The operating cost models in GPS-X are designed to simulate typical operating costs found in
typical wastewater treatment facilities. The models are populated with parameters that give costs
for typical plants.
To calibrate the models to the behavior of the plant being simulated, the user will need to adjust
various parameters in the models. This list can be useful in guiding calibration.
Aeration
Pumping
Enter the hydraulic head and headloss for the system, if known. Otherwise, use the
defaults. Calibrate with the blower efficiency and diffuser headloss.
Enter the hydraulic head and headloss for the system, if known. Otherwise, use the
defaults. Calibrate with the pump efficiency and/or piping headloss
Chemical Dosage & Sludge Disposal
As these calculations are a flat “flow multiplied by price” calculation, the model is
calibrated by adjusting the price parameter (flow is calculated or set elsewhere).
Miscellaneous
The miscellaneous energy use is a flat rate, so it is calibrated by adjusting this rate as
appropriate.
OPERATING COSTS FOR EACH OBJECT
Table 13-1 outlines the operating costs assigned to each object in GPS-X. In some cases, the
presence of the cost may depend on the model chosen for that object.
GPS-X Technical Reference