Page 317 - Distributed model predictive control for plant-wide systems

Operation Optimization of Multitype Cooling Source System Based on DMPC 291

4000
Predictive load
With DMPC
Without DMPC
3000

Load (kW) 2000

1000

0
5:00 5:30 6:00 6:30 7:00 7:30 8:00 8:30 9:00 9:30 10:00 10:30 11:00
Time
(c) Second electric refrigeratorwith 3900 kW
2500
Predictive load
With DMPC
2000 Without DMPC

1500
Load (kW) 1000

500

0
5:00 5:30 6:00 6:30 7:00 7:30 8:00 8:30 9:00 9:30 10:00 10:30 11:00
Time
(d) First electric refrigerator with 2150 kW
Figure 13.5 (Continued)

Table 13.4 Effect of dynamic optimization

Load DMPC Non-DMPC
Total 3.40 × 10 7 1.03 × 10 8
First electric refrigerator 4.91 × 10 7 1.11 × 10 8
Second electric refrigerator 8.71 × 10 6 3.82 × 10 7
Third electric refrigerator 8.41 × 10 6 2.06 × 10 7