DHI developed a hydraulic sub-model of the Novi Sad water network consisting of 210 km of pipelines of diameter 100-900 mm (excluding service pipes), primarily made of AC, PE, PVC, and Cl/CLS. The Srem area water network consists of over 15 pressure zones, a high number of pumping stations (about 45 pumps) and 14 storage tanks.
The model represented about 25% of the water system involving 8,800 customer connections. It was carefully modelled to ensure a good match between simulated and observed data; calibration plots were developed for 54 comparison points, 21 flows and 33 pressures or water levels. Energy optimisation measures included a pump operations efficiency review and system-wide energy audit.
DHI’s solutions were to:
- Create a calibrated hydraulic model of the highly complex water system
- Link the energy market forecast model to the hydraulic model
- Provide cost-benefit analysis and suggestions for better operations
- Analyse potential CO2 savings to support climate change mitigation