192 MACHINERY AND TRIALS OF THE PASSENGER SHIPS 
OTHER AUXILIARIES 
Name 
Size Type Remarks 
50 K. W. Marine _| Direct turbine driven, 3,000 R. P. M., ex- 
Main generator...... 
118 volt haust-condenser, feed heater and atmosphere. 
25” dia. X 34” 12 coil 
60 sq. ft. H. S. 
Fuel-oil heater....... 
Fuel-oil meter....... 14” Worthington 
Forced-draft fan ..... 42” dia. Turbo-vane Capacity of each, 22,500 cu. ft. per min. 
against 3” 
Injectors rick teen) cd 2” Double tube 
Evaporator.......... 2 35 ton Reilly 
Distillersenee eee: 2 3,000 gal. Reilly 
Onl @MErensessoase| 350 sq. ft. H. S. | Schutte & Koerting 
Feed water heater... . 1 BP bey SOO MW ss oodboauobasaco Capacity = 160,000 Ibs. per hour, 90° F. 
to 212° F. 
Air compressor ...... 9} WW Se IA Se 
Oil purifier.......... ALBA tiFaestey state eterewetee eteiels Centrifugal 
Aerating filter....... iL 13” Reilly 
Ventilating fan...... 27 |1,000to12,000C.F.M. 
Winches scp. is.c 2 voice 26 CY &< ey 
IWandlasszryeverrictil-i 1 13” x 137 Spur geared 
Gy payin ewcintccenr cvs. 2 10” x 10” Non-reversing 
Sd5000 16” x 127 Screw 
Plate 57 gives the tabulated results of these trials. The bottom table shows the results 
for the standardization at approximately 12, 14, 16 and 19 knots. It was intended to make 
five runs at the high speed, but the thirteenth run had to be thrown out on account of turn 
of tide, and this set was therefore split into two groups of three runs each. The speed results 
have been corrected for deviation. The shaft horse-power was obtained by means of Gary- 
Cummings torsion meters fitted to the two shafts next to the reduction gears, which were 
specially bored for the purpose, and the shafts were carefully calibrated in the shop with the 
torsion meters in place. The results of this trial are plotted on Plate 58, and alongside is a 
comparison of the effective horse-power and shaft horse-power. 
In order to obtain some data as to the performance of the turbine, water-measuring 
tanks were fitted and arrangements made for measuring the steam consumption of the star- 
board turbines. Six-hour runs were made at approximately 7,000 and 10,000 shaft horse- 
power and a twelve-hour run at full power, and the consumption was measured for the whole 
time. A short trial was also made at about 10,000 shaft horse-power for the purpose of meas- 
uring the steam consumption of the auxiliaries. The data for these trials are shown on the 
upper half of Plate 57. It will be noted that the water rate is 10.70 at 13,043 shaft horse- 
power. The water is given uncorrected, except for a small allowance for Radojet steam. 
The consumption for auxiliaries showed rather high, 2.74 pounds, but this is a condition 
