CKLOaoriNG I'l^-INIS l-OR TRli.lllSG CltliSTNUT I'OLl-S 2bi 



ilu- radiators iiisidi- tin- t.mk car in order to inaki' tlu- oil fluid i'iiourIi 

 to tlow throuj;li tlu- tli-\il)if hoso and ])i|H-s to the ci-ntrifiinal [)iiinp. 

 A'hv soiidif\iii^ of tlu- rri-osotc at i'omparati\i'K' hi^li ti-in|HTatiirfs 

 .dso rf(iiiir(.-s a small l)ank of radiators in i-ai-h cold tank. 



'I"lu- sicani |ii|H- riuis, hctwi-i-n the steam lioiler and the vari'iiis 

 tanks, and the oil |)i|K' lines between the various tanks and the pump, 



Fig. .51 — ^Gener.il \ im ul .\.aui,i! Ijiulgc I'lant in Operation 



lire grouped so that both the steam lines and oil lines can be enclosed 

 in boxes. The heat radiated from the steam lines warms the air in 

 the Ixjxes to such an extent that the oil remains liquid. 



The valve controls for the oil and steam lines which arc led through 

 the bo.xes, are grouped so that several can be reached by opening 

 the door of each of the boxes. 



In the smaller plants which have the one-half-car pole capacity 

 of treating tanks, the centrifugal pump handles the oil at a rate of 

 alx)Ut 200 gallons jx^r minute. In the larger plants, howe\er, where 

 the treating tanks have one-car capacity of poles, the oil is handled 

 through the centrifugal pump at the rate of about 600 gallons per 

 minute. As mentioned in the above section describing the treat- 

 ment, the high rate of oil movement is necessary in order to accom- 

 plish the change from hot to cold oil in the treating tanks in such a 



