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The total system demand of the Net2 network was 7.2% of that of the Apulian networks, while the original reservoir head of both networks was lowered by about 20 m. Therefore, the commercial pump capacities considered in the Net2 network were smaller, and their pump curve showed less variation in the head gain. As a result, the daily maximum pressure differences were smaller than the Apulian networks (Table 5). Similarly, smaller pumps were constructed, which lowered the total cost relative to the Apulian networks. While the POCs were similar among the solutions, the PCC increased when a high robustness level was considered.

Table 5

Net2 network's pump design and scheduling solutions

Daily maximum pressure difference (m)Pump capacity (kW)Number of pumpsPOC (%)PCC (%)Total cost (USD)
2.51 2.5 175,881 (19) 754,140 (81) 930,020 
1.0 1.4 182,646 (17) 864,640 (83) 1,047,286 
0.7 0.9 185,566 (14) 1,118,077 (86) 1,303,643 
Daily maximum pressure difference (m)Pump capacity (kW)Number of pumpsPOC (%)PCC (%)Total cost (USD)
2.51 2.5 175,881 (19) 754,140 (81) 930,020 
1.0 1.4 182,646 (17) 864,640 (83) 1,047,286 
0.7 0.9 185,566 (14) 1,118,077 (86) 1,303,643 

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