Road Tunnel Axial Fan Performance In Situ Test: Taking Qinling Zhongnan Mountain Highway Tunnel as an Example

Table 3

Air flow rate comparison.

Operating points		1	2	3	4	5	6	7
Air flow rate	Log-Tchebycheff method	157.65	151.12	149.79	141.96	138.89	130.97	119.57
	MATLAB fitting	151.35	145.23	143.74	136.19	134.40	125.58	114.80
Difference	(%)	3.99	3.90	4.04	4.07	3.23	4.12	3.99