TESTS OF DRAINAGE PUMPING PLANTS. 
11 
diameter of cylinder 14 inches, stroke 20 inches. Various speeds of 
rotation were employed for the purpose of finding the best efficiency. 
The results were excellent and have been confirmed by tests of other 
plants. If the mechanical efficiency of the engine be assumed as 90 
per cent and the efficiency of transmission 95 per cent, the efficiency 
of the pump would be approximately 55 per cent with a 5-foot lift. 
Table 3 
.— Test 1 
of Menge pump. 
Paradis. 
La.. Sept. 16. 1909. 
Speed. 
Efficiency 
Boiler 
pres- 
Indi- 
cated 
horse- 
Actual 
lift. 
Discharge. 
Water 
horse- 
ofengine, 
trans- 
mission, 
sure. 
power. 
Engine. 
Pump. 
power. 
and 
pump. 
Lbs. per 
sq. in. 
R. p. m. 
E. p. m. 
Feet. 
Sec.-ft. 
G.p. m. 
Per cent. 
76 
11.4 
67 
78 
2.67 
1.28 
575 
0.39 
3.4 
77 
39.6 
92 
98 
3. 55 
39.6 
17,800 
15.9 
40.2 ! 
SO 
40.1 
92 
99 
3.65 
39.6 
17, 800 
16.3 
40.6 
75 
59.6 
107 
117 
4.24 
54.5 
24, 500 
26.1 
43.8 
77 
22.1 
80 
87 
3.42 
20.8 
9,360 
8.0 
36.2 
79 
37.7 
93 
101 
3.90 
35. 5 
15.970 
15.6 
41.4 
69 
59.3 
107 
116 
4.30 
53.7 
24, 150 
26.1 
44.0 
70 
41.7 
97 
104 
4.15 
37.9 
17, 050 
17.8 
42.7 
68 
65.8 
111 
121 
4.80 
52.0 
23,400 
28.2 
42.8 
55 
48.4- 
100 
111 
4. 55 
42.8 
19.300 
22.0 
45. 5 
55 
71.0 
114 
123 
5.00 
55. 5 
25,000 
31.4 
44.2 
50 
65.3 
110 
122 
5.00 
54. 5 
24,500 
30.8 
47.1 
48 
60.6 
109 
118 
4.90 
51.2 
23,000 
28.4 
46.8 
70 
76.5 
116 
128 
5.30 
56.3 
25, 350 
33.7 
44.1 
1 Duration of test, 3 hours 13 minutes. 
TESTS OF PUMPING PLANT OF THE PHILLIPS LAND CO., PLAQUEMINES PARISH, LA. 
DESCRIPTION OF PLANT. 
This pumping plant is used to dram 2,500 acres of wet prairie 
land in Plaquemines Parish, about 15 miles below Xew Orleans. 
The plant consists of two units, a 36-inch double-suction centrifugal 
pump driven by a 14 by 18 inch simple slide-valve engine, and a 
21-inch double-suction centrifugal pump driven by a 10 by 14 inch 
simple slide-valve engine. Both engines are noncondensing. The 
suction pipes of the large pump are 26 inches in diameter, while those 
of the smaller pump are 18 inches. The pumps are direct connected 
to the engines through flexible couplings. The exhaust of the engines 
is conducted through a common exhaust pipe to a closed heater 
and then to an exhaust head. Steam is furnished by two horizontal 
return tubular boilers rated at 80 horsepower each. Oil is used as 
fuel. Steam is required to atomize the oil and to run the oil and 
boiler feed pumps. The pumping plant is housed in a steel frame 
building covered with galvanized iron. 
METHOD OF CONDUCTING THE FIRST TEST. 
The plant was operated under normal conditions for the first test. 
Fuel was measured in a barrel. Feed water was measured by a 
Worthington meter, which was calibrated after the test. Xo attempt 
