TESTS OF DRAINAGE PUMPING PLANTS. 



31 



of the fuel oil used was obtained by measuring the change in elevation 

 of the oil in the storage tank. When the test was finished the pump 

 was opened and about a bushel of grass and weeds was taken out. 

 This debris, which must have been accumulated gradually, was 

 nearly equally distributed on the two sides. There were defects 

 in the screen, especially at the ends, but these were soon remedied 

 and it is probable that most of the vegetation came through the 

 screen itself in small pieces. It is certain that the filling up of the 

 pump decreased the capacity and efficiency of the pump. Table 22 

 gives in detail the results of the test. 



Table 22. — Test of pumping plant, subdistrict No. 1, Lafourche drainage district No. IS, 

 Fay port, La., Nov. 24, 1916? 



Time. 



Speed. 



Actual 

 lift. 



Discharge. 



Useful 

 water 

 horse- 

 power. 



10.45 



R. p. m. 

 169 

 168 

 169 

 170 

 179 

 182 

 181 

 182 

 182 

 181 

 181 

 183 



Feet. 

 1.94 

 2.26 

 2.42 

 2.59 

 2.73 

 2.97 

 3.10 

 3.25 

 3.46 

 3.57 

 3.77 

 3.87 



Sec.-ft. 

 35.66 

 33.84 

 30.40 

 30.26 

 28.60 

 31.82 

 29.10 

 29.30 

 28.18 

 26.98 

 24.90 

 25.34 



G. p. m. 

 16,000 

 15,200 

 13, 630 

 13, 590 

 12, 830 

 14,300 

 13,060 

 13,140 

 12, 620 

 12,100 

 11, 170 

 11, 370 



7.86 



11.15 .. 





11.45 



8.35 



12.15 



8.90 



12.45 



8.87 



1.15 



10 72 



1.45 



10.22 



2.15 



10.81 



2.45 



11 13 



3.15... 



10 93 



3.45 



10 66 



4.15... 



11 12 









176.5 



2.99 



29. 53 



13,250 



10 02 











1 Oil used, 244 pounds. 

 TEST OF DRAINAGE PUMPING PLANT IN DALCOUR DRAINAGE DISTRICT, DALCOUR, LA. 



DESCRIPTION OF PLANT. 



This pumping plant installed in 1913 at Dalcour, La., about 22 

 miles below New Orleans, drains 650 acres of land. A 35-horsepower 

 distillate engine is used to drive a 24-inch centrifugal drainage pump. 

 A friction clutch is used to connect engine and pump. A priming 

 pump is run from a jack shaft which in turn is belted to the engine. 



The fuel used in the acceptance test was distillate of 45° Baume - at 

 86° V.. which reduced to 60° F. was equivalent to 42° Baume, 

 weighing 6.8 pounds per gallon. The manufacturer's guarantee was 

 that the plan! would consume not more than 3.56 gallons of kerosene 

 or So. 2 Solar oil per hour with pump operating at a capacity of 

 • r _' ". ' ) gallons per minute and a difference in water level of 5.5 feet. 



1 1 wa- impossible to Continue the test long enough to pump t he water 

 down to a 5. 5-foot lift, hut it, was agreed that the results obtained at 

 the 5-fooi lift would govern if satisfactory. Table 23 gives the 

 results obtained during the test. 



