Study of High Efficiency Flow Regulation of VIGV in Centrifugal Compressor

Table 2

Mass flow, the mass flow rate change ratio, and efficiency at 60° setting angle.

Profile	Summer			Winter
	Mass flow (kg/s)	Mass flow change ratio (%)	Efficiency (%)	Mass flow (kg/s)	Mass flow change ratio (%)	Efficiency (%)
Original	13.265	0	87.116	23.838	0	84.285
0008	11.616	−12.43	84.644	22.6	−5.19	83.773
0012	12.7	4.24	87.376	24.271	1.82	84.903
0018	13.92	4.94	88.074	25.2	5.71	86.000
2412	13.031	−1.76	87.057	23.617	−0.927	84.207
4412	11.8	−11.04	86.444	22.874	−4.04	83.504
6412	11.49	−13.38	85.763	22.4	−6.03	83.084
6408	10.01	−24.54	80.740	21.411	−10.18	81.580
6418	13.856	4.46	87.758	25.162	5.55	84.526
6312	12.11	−8.71	84.607	22.52	−5.53	82.207
6512	10.95	−17.45	87.821	22.016	−7.64	85.021