TESTS OF DRAINAGE PUMPING PLANTS. 
39 
Table 32 gives the result of a test on high-lift unit No. 2 before the 
blades of the pump were smoothed and sharpened. Table 33 gives 
the results of a test after the improvements had been made. It was 
believed that a considerably better showing would be obtained from 
the low-lift pump by sharpening the impeller blades and trimming 
out the casing, and this work was subsequently done. The results 
of the test on low-lift unit No. 3 are given in Table 34. 
Table 32.- 
■Test of pump No. 2 of drainage pumping plant at Port Arthur, Tex., July 
23-26, 1918} 
Time. 
Speed. 
Discharge. 
Actual 
lift. 
Fuel 
used. 
Water 
pumped 
per gallon 
of fuel 
used. 
2.56. 
3.00. 
3.05. 
3.09. 
3.15. 
3.19. 
3.23^ 
3.32. 
3.37. 
3.45. 
3.49. 
3.53. 
R.p. 
255 
255 
255 
254 
254 
254 
252 
252 
250 
244 
239 
237 
Sec.-ft. 
89.12 
88.68 
88.23 
87.56 
85.56 
86.01 
85.34 
84.00 
81.10 
78.65 
71.30 
58.87 
■. p. m. 
40,000 
39,800 
39, 600 
39, 300 
38,400 
38,600 
38, 300 
37, 700 
36,400 
35, 300 
32,000 
26,200 ! 
Feet. 
4.75 
4.95 
5.15 
5.38 
5.60 
5.75 
6.05 
6.68 
7.18 
8.64 
10.10 
11.34 
G. p. m. 
Gallons. 
0.139 
.166 
.164 
.156 
.163 
.175 
.159 
.180 
.210 
.213 
.210 
286,000 
238,000 
239, 000 
246,000 
237,000 
219,000 
237,000 
202,000 
168,000 
150,000 
125.000 
1 This test was made W. P. Langworthy before pump blades were sharpened.. 
Table 33. — Test of pump No. 2 of drainage pumping plant at Port Arthur, Tex., July 
23-26, 1918} 
Water 
Speed. 
Average 
velocity 
of flow. 
Discharge. 
Actual 
lift. 
Fuel 
used. 
pumped 
per gallon 
of fuel 
1 
used. 
R.p.m. 
\Ft.persec. 
Sec.-ft. 
G. p. m. 
Feet. 
G. p. m. 
Gallons. 
254 
6.04 
89.12 
40,000 
3.60 
0.153 
262,000 
255 
5.87 
86.45 
38,800 
3.75 
.156 
249,000 
253 
5.89 
86.67 
38,900 
3.88 
.156 
249,000 
254 
6.09 
89.57 
40,200 
3.97 
.151 
267,000 
253 
5.91 
87.12 
39, 100 
4.35 
.154 
254,000 
253 
5.77 
85.11 
38,200 
4.40 
.154 
248,000 
253 
5.82 
85.78 
38,500 
4.48 
.149 
258,000 
254 
5.85 
86.22 
38,700 
4.60 
.149 
260,000 
253 
5.81 
86.56 
38,400 
4.70 
.159 
241,000 
252 
5.85 
86.22 
38,700 
5.00 
.164 
236,000 
252 
5.70 
84.00 
37,700 
5.18 
.164 
230,000 
252 
5.64 
83.33 
37,400 
5.40 
.166 
225,000 
252 
5.61 
82.88 
37,200 
5.60 
.173 
215,000 
251 
5.44 
80.21 
36,000 
5.82 
.173 
208,000 
249 
5.53 
81.55 
36,600 
6.45 
.180 
203,000 
247 
5.51 
81.32 
36,500 
6.70 
.180 
203,000 
245 
5.48 
80.65 
36,200 
7.10 
.169 
214,000 
243 
5.24 
77.31 
34,700 
7.65 
.169 
205,000 
1 This test was made W. P. Langworthy after pump blades were sharpened 
