Aug. 1, 1925 
Tests of Deep-Well Turbine Pumps 
239 
Table VI .—American 2-stage, 17-inch pump, No. 6 
Average 
pump 
speed 
Speed 
of pump 
No. 
of 
run 
Pres¬ 
sure 
head 
Suction 
head 
Static 
head 
Ve¬ 
locity- 
head 
Total 
head 
Brake 
horse¬ 
power 
Dis¬ 
charge 
Water 
horse¬ 
power 
Effi¬ 
ciency 
R. p. m. 
R. p. m. 
768 
1 
Ft. 
36.16 
Ft. 
0.56 
Ft. 
11.62 
Ft. 
-0.00 
Ft. 
48.34 
5.51 
Q.p.m. 
0 
0.00 
P.ct. 
0.0 
766 
2 
32.09 
1.24 
11.62 
-.02 
44.93 
5.82 
53 
.60 
10.3 
768 
3 
28.70 
1.69 
11.62 
-.07 
41.94 
6.13 
112 
1.18 
19.2 
768 
767 
4 
22.82 
3.05 
11.62 
-.29 
37.20 
7.16 
236 
2.21 
30.9 
769 
5 
17.74 
4.86 
11. 62 
-. 66 
33. 56 
7.86 
350 
2.96 
37.7 
770 
6 
13.11 
6.78 
11.62 
-1.05 
30.46 
8.31 
446 
3.43 
41.3 
767 
7 
7.23 
9.72 
11.62 
-1.76 
26.81 
8.22 
572 
3.87 
47.1 
862 
1 
49.04 
.23 
11. 62 
-.00 
60.89 
2.24 
0 
.00 
.0 
856 
2 
42.94 
1.18 
11.62 
-.03 
55.71 
4.92 
74 
1.04 
21.2 
854 
3 
39.66 
1.69 
11. 62 
-.06 
52.91 
6.15 
122 
1.62 
26.3 
855 
4 
35. 59 
2.49 
11.62 
-. 21 
49.49 
6.40 
198 
2.47 
38.6 
854 
852 
5 
28.76 
4.26 
11.62 
-. 58 
44.06 
8.46 
333 
3.70 
43.7 
851 
6 
22.15 
6.67 
11.62 
-1.15 
39.29 
10.60 
464 
4.60 
43.4 
851 
7 
18.08 
8.19 
11. 62 
-1. 52 
36.37 
10.09 
533 
4.89 
48.5 
852 
8 
13.90 
8.83 
11.62 
-1. 92 
32.43 
10.26 
601 
4.93 
48.0 
851 
9 
7.06 
13.31 
11. 62 
-2.66 
29.33 
10.44 
711 
5.26 
50.3 
935 
1 
61.06 
.28 
11. 62 
-.00 
72.96 
6.89 
0 
.00 
.0 
938 
2 
- 55.48 
1.13 
11. 62 
-.02 
68.21 
5.90 
53 
.91 
15.4 
937 
3 
50.85 
1.86 
11.62 
-.07 
64.26 
8.40 
115 
1.86 
22.1 
936 
4 
46.49 
2.20 
11. 62 
-. 18 
60.13 
8.32 
186 
2.82 
33.9 
934 
932 
5 
39.55 
3.84 
11.62 
-.49 
54.52 
10.45 
306 
4.20 
40.2 
932 
6 
31.98 
6.41 
11.62 
-1.05 
48.96 
12.15 
446 
5.50 
45.3 
930 
7 
27.57 
8.05 
11.62 
-1.44 
45.80 
12.97 
518 
5.98 
46.1 
931 
8 
20.45 
10.73 
11.62 
-2.10 
40.70 
13.39 
630 
6.46 
48.2 
932 
9 
14.06 
13. 56 
11.62 
-2.76 
36.48 
13.39 
724 
6.66 
49.7 
932 
10 
7.32 
16.72 
11.62 
-3. 57 
32.09 
13.45 
825 
6.68 
49.6 
1,004 
1 
69.21 
.45 
11.62 
-.00 
81.28 
5.90 
0 
.00 
.0 
999 
2 
62.72 
1.58 
11.62 
-.02 
75.90 
6.65 
71 
1.36 
20.5 
995 
3 
56.39 
2.20 
11.62 
-. 12 
70.09 
9.27 
153 
2.70 
29.1 
995 
992 
4 
48.31 
3.78 
11.62 
-. 41 
63.30 
11.77 
280 
4.47 
38.0 
990 
5 
39.60 
6.78 
11.62 
-1.12 
56.88 
14.10 
458 
6. 57 
46.6 
992 
6 
30.74 
10.40 
11.62 
-1.81 
50.95 
15.15 
582 
7.48 
49.4 
993 
7 
22.83 
13.73 
11.62 
-2.81 
45.37 
15.18 
727 
8.32 
54.8 
993 
8 
10.17 
19.16 
11.62 
-4.32 
36.63 
14.77 
902 
8.34 
56.4 
’ 1,095 
1 
84.18 
.59 
11.62 
-.00 
96.39 
6.71 
0 
.00 
.0 
1,093 
2 
75.60 
2.20 
11.62 
-.04 
89.38 
10.80 
87 
1.96 
18.1 
1,092 
3 
66.85 
2.82 
11.62 
-. 18 
81.11 
11.35 
186 
3.80 
33.5 
1,093 
4 
59.72 
4.63 
11.62 
-.48 
75.49 
11.68 
300 
5.70 
48.8 
1,091 
5 
50.85 
7.03 
11.62 
-1.04 
68.46 
17.22 
444 
7.66 
44.5 
1,090 
6 
41.92 
10.17 
11.62 
-1.82 
61.87 
19.11 
584 
9.14 
47.8 
1,086 
1,080 
8 
44.41 
9.04 
11. 62 
-1. 55 
63.52 
19.15 
541 
8.66 
45.2 
1,080 
9 
37.23 
11.64 
11.62 
-2.17 
58.32 
19.96 
641 
9.42 
47.2 
1,082 
10 
36.61 
12.20 
11. 62 
-2.50 
57.93 
20.13 
685 
10.00 
49.7 
1,082 
11 
29.27 
15.03 
11.62 
-3.20 
52.72 
20.23 
775 
10.30 
50.9 
1,082 
12 
22.31 
18.08 
11.62 
-3.98 
48.03 
20.22 
864 
10.46 
51.7 
1,082 
13 
16.84 
20.28 
11.62 
-4. 51 
44.23 
19.81 
921 
10.28 
51.9 
. 1,082 
14 
8.19 
24.35 
11.62 
-5.55 
38.61 
19.60 
1,023 
9.95 
50.8 
1,191 
1 
103.55 
.49 
11.62 
-.00 
115. 66 
2.40 
0 
.00 
.0 
1,190 
2 
94.68 
1.69 
11. 62 
-.02 
107.97 
8.82 
62 
1. 69 
19.2 
1,189 
3 
90.46 
2.46 
11.62 
-.08 
104.46 
11.73 
124 
3.26 
27.8 
1,189 
4 
84.18 
2.82 
11.62 
-. 14 
98.48 
12.43 
166 
4.12 
33.1 
1,188 
5 
79.16 
3.28 
11.62 
-. 30 
93.76 
16.48 
237 
5.60 
34.0 
1,183 
6 
72.07 
4.89 
11.62 
-. 54 
88.04 
19.09 
319 
7.09 
37.1 
1,186 
7 
68.93 
5.31 
11.62 
-.69 
85.17 
18.08 
361 
7.75 
42.9 
1,184 
1,182 
8 
64.64 
6.33 
11.62 
-1.00 
81.59 
22.05 
444 
* 9.13 
41.4 
1,182 
9 
59.78 
7.91 
11. 62 
-1.43 
77.88 
22.63 
518 
10.17 
44.9 
1,180 
10 
54.80 
9.83 
11.62 
-1.87 
74.38 
23.66 
595 
11.17 
46.9 
1,180 
11 
44.24 
13.56 
11.62 
-2.81 
66.61 
25.23 
732 
12.29 
48.7 • 
1,176 
12 
37.52 
16.10 
11.62 
-3.46 
61.78 
25.61 
804 
12.57 
49.0 
1,180 
13 
30.51 
19.89 
11.62 
-4.25 
57.77 
26.20 
896 
13.06 
49.8 
1,180 
14 
22.31 
24.01 
11. 62 
-5.40 
52.54 
25.58 
1,008 
13.39 
52.3 
1,178 
15 
13.00 
27.37 
11.62 
-6.14 
45.85 
25.22 
1,074 
12.41 
49.2 
