Orthogonal Experimental Study on Heat Transfer Optimization of Backfill Slurry with Ice Particles

Table 5

Analysis of the range of effective cooling heat coefficient.

Evaluation index	Value name	A (%)	B (%)	C (%)	D (%)
Total	K1	44.50	33.76	32.84	35.90
	K2	34.36	37.99	38.6	37.70
	K3	32.08	39.19	39.50	37.34
Average	k1	14.83	11.25	10.95	11.97
	k2	11.45	12.66	12.87	12.57
	k3	10.69	13.06	13.17	12.45
Range		4.14	1.81	2.22	0.6
Ranking	A > C > B > D
Optimal combination	A1B3C3D2