Influence of Blade Profiles on Plastic Centrifugal Pump Performance

Table 6

Performance experiment of logarithmic spiral method.

	Measured value					n = 2900 (r/min)
	Inlet pressure	Outlet pressure	Q	n	Pin	Q	H	Pin	η
	(kPa)	(kPa)	(m^3/h)	(r/min)	(kW)	(m^3/h)	(m)	(kW)	(%)
1	−70.00	180.00	21.33	2998.60	5.58	20.63	26.75	5.05	29.79
2	−80.00	190.00	21.08	2998.07	5.36	20.39	28.62	4.85	32.77
3	−80.00	210.00	20.24	3001.45	5.21	19.56	30.30	4.70	34.35
4	−80.00	230.00	18.98	3002.29	5.20	18.33	31.95	4.69	34.05
5	−60.00	250.00	16.50	3001.64	5.01	15.94	31.55	4.52	33.32
6	−50.00	280.00	14.65	3001.62	4.80	14.15	33.18	4.33	29.55
7	−30.00	310.00	11.30	3001.65	4.48	10.92	33.72	4.04	24.82
8	−30.00	320.00	1.54	3001.62	4.42	10.18	34.59	3.99	24.08
9	−20.00	330.00	8.46	3001.77	4.20	8.17	34.40	3.79	20.23
10	−20.00	340.00	7.35	3001.72	4.11	7.10	35.27	3.71	18.41
11	−20.00	340.00	5.93	3001.50	3.98	5.73	35.19	3.59	15.30
12	−10.00	350.00	2.63	3001.25	3.74	2.54	35.06	3.37	7.19
13	−10.00	370.00	0.00	3001.34	3.43	0.00	36.93	3.09	0.00