TESTS OF DRAINAGE PUMPING PLANTS. 
25 
Boiler test. 
Duration of test, hours 6. 07 
Average stack temperature, °F 498 
Average steam pressure, pounds per square inch 120 
Average furnace draft, inches of water 0. 28 
Average feed temperature, °E 72 
Water evaporated, pounds 31. 555 
Equivalent water evaporated at 212°, pounds 37, 560 
Factor of evaporation 1. 19 
Boiler horsepower developed - 179. 3 
Total fuel oil, pounds 2, 975 
Ratio of actual water evaporated to fuel oil 10. 61 
Ratio of equivalent water evaporated at 212°, to fuel oil 12. 63 
Efficiency of boiler (basis 18,500 B. T. U. per pound), per cent 66. 1 
Table 16. — Test of unit No. 2 of pumping plant of subdistrict No. 1, Gueydan drainage 
district, Florence, La., Oct. 1, 1912. 
Speed. 
Indicated 
horse- 
power. 
Actual 
lift. 
Head on 
pump. 
Useful 
water 
horse- 
power. 
Efficiency. 
Discharge. 
Pump 
and 
engine. 
Pump, 
engine, 
and 
piping. 
R.p.m. 
71 
81 
82 
85 
89 
98 
101 
83.8 
122.2 
132.7 
154.5 
183.4 
225.9 
249.7 
Feet. 
Feet. 1 Sec-feet. 
G.p.m. 
Per cent. 
Per cent. 
5. 15 
4.85 
4.95 
4.95 
4.95 
5.10 
5. 8i 137. 9 
5. 24 155. 1 
5.08 170.9 
5. 08 1 180. 8 
5.08 200.4 
5.55 I 211.9 
1 
61. 900 
69, 600 
76, 700 
81, 200 
90, 000 
95, 100 
80.5 
85.3 
96.0 
101. 5 
112.6 
122.6 
74.3 
69.5 
63.8 
57.0 
51.1 
53.3 
65.9 
64.3 
62.2 
55.3 
49.9 
49.1 
Table 17. — Test of engine and pump of unit No. 2 of subdistrict No. 1, Gueydan drainage 
district No. 1, Florence, La., Oct. 1, 1912. 
Boiler 
pressure. 
Speed. 
Indi- 
cated 
horse- 
power. 
Actual 
lift. 
Head on 
pump. 
Useful 
water 
horse- 
power. 
Efficiency. 1 
Time. 
Discharge. 
Pump, 
engine, 
and 
piping. 
Pump 
and 
engine. 
11.15 
11.45 
12.15 
12.45 
1.15 
1.45 
2.15 
2.45 
3.15 
3.45 
Lbs. per 
sq. in. 
118 
115 
115 
. 117 
118 
125 
125 
125 
123 
125 
R. p.m. 
90 
89 
91 
90 
89 
94 
94 
91 
92 
92 
177.1 
171.4 
' 178. 4 
181.6 
171.3 
201.1 
201.1 
196.6 
195. 4 
197.3 
188.0 
188.0 
172.8 
Sec-feet. 
185.4 
188.3 
194.8 
190.5 
195.8 
198.7 
199.4 
194.8 
195.1 
190.0 
192.0 
184.9 
181.9 
G. p. m. 
83, 200 
84, 500 
87, 500 
85, 500 
87,900 
89, 200 
89, 500 
87, 500 
87, 600 
85, 300 
86, 200 
83,000 
82, 100 
Feet. 
4.36 
4.50 
4.55 
4.54 
4.60 
4.70 
4.70 
4.80 
4.85 
4.90 
4.95 
4.95 
4.90 
Feet. 
4.83 
4.79 
4.87 
5.21 
5.04 
4.87 
4.87 
5.15 
5.06 
91.6 
96.2 
105.0 
98.4 
102.4 
106.0 
106.4 
106.2 
107.5 
Percent. 
51.7 
56.2 
58.9 
54.2 
59.8 
52.8 
52.9 
54. 1 
55.0 
Per cent. 
57.3 
59.8 
60.3 
62.2 
65.4 
54.7 
54.8 
58.0 
57.3 
4.15 
4.45 
5.15 
120 91 
120 91 
112 90 
5.09 
5.23 
5.37 
107.6 
103.9 
101.6 
57. 2 
58.9 
58.4 
64.5 
Mean 
120 91. 1 1 186. 2 | 191. 8 
86, 077 
4.72 
5.02 
102.7 
§5.6 
59.9 
1 Pump efficiency was 65.7 per cent, based on 91.1 per cent mechanical efficiency of engine and pump 
from friction cards. 
89782— 22— Bull. 1067 4 
