The Steam Injector
A theoretical and practical treatise on the design and operation of injectors and on the flow of fluids through and the design of nozzles.

______________ NOZZLE DIMENSIONS. 97 Now n = 1'135, therefore V «= / 2 x 32'2 ^44- x 144 x 90 x 479 v 2‘135 = 1469 ft. per second. The approximate valnes -96 and 1500 would have been wufficiently accurate. The dryne'S fraction at t'ie ateam nozzle moutb, where the pressure is 3 Ibs. per square inch absolute, is -T + </>l “ </>,■ ■r - -*-1 X1 ~ lT t2 + -452 - -2 _ • o 1 .. 1015~~ 603-6 - -918 ; therefore the velocity at the steam nozzle exit is _________ V = ^/2 <j J (ix + Li — t.2 — x.2 L2) _________________________________________________________ = 72 x 32-2 x 778 (320 + 880-141-6 - -918 x 1015) = 2606 ft. per second. The ratio of water to steam in the injector is : ______________ ^3 ~ ^2 _ 320 + 889 - 140 140 - 60 = 13-36. The velocity of the water en tering the injector due to a head of 2 ft. and a presaure of 12 Ibs. pei- square inch (the 8 81