Minimizing Energy Cost in Electric Arc Furnace Steel Making by Optimal Control Designs

Table 4

Production cost reduction of 15 heat files.

Heat file number	Ratio of the costs by optimal control and manual control	Cost saving
1	0.86	14%
2	0.9	10%
3	0.9	10%
4	0.9	10%
5	0.9	10%
6	0.86	14%
7	0.93	7%
8	0.84	16%
9	0.87	13%
10	0.91	9%
11	0.78	22%
12	0.9	10%
13	0.81	19%
14	0.82	18%
15	0.84	16%