[Retracted] Kinetics of Sludge Superheated Steam Drying and Optimization of Process Parameters

Table 10

Experimental designs and results.

Serial number	Steam temperature X1	The mass of sludge X2	Steam flow X3	The relative unit consumption of energy Y (kJ∙g^−1)
1	1	1	1	322.9166667
2	1	1	−1	312.5
3	1	−1	1	402.6315789
4	1	−1	−1	473.6842105
5	−1	1	1	281.25
6	−1	1	−1	322.9166667
7	−1	−1	1	416.4524422
8	−1	−1	−1	450
9	−1.682	0	0	358.8424437
10	1.682	0	0	352.7710843
11	0	−1.682	0	520.4819277
12	0	1.682	0	293.8070091
13	0	0	−1.682	347.266881
14	0	0	1.682	334.6243222
15	0	0	0	289.3890675
16	0	0	0	318.3279743
17	0	0	0	260.4501608
18	0	0	0	318.0722892
19	0	0	0	346.9879518
20	0	0	0	347.266881
21	0	0	0	376.2057878
22	0	0	0	318.3279743
23	0	0	0	289.3890675