. The steam-engine and other heat-motors. Cooky = A-Line •»» -r, ,, „ ,nn c ? S Tension 1 lnch= Spnng, \ ,n , inch= Fig. 146. = = AIR PUMP OCCASIONAL. T. -Line = Coolej- Fig. 147. = 276 THE STEAM-ENGINE AND OTHER HEAT-MOTORS. per revolution by the low-pressure pistons. On the battle-ships thecorresponding ratio of independent air-pump piston displacementper revolution to the displacement of the low-pressure pistons perrevolution was 1/25, but the pumps only made 1/4 to 1/
. The steam-engine and other heat-motors. Cooky = A-Line •»» -r, ,, „ ,nn c ? S Tension 1 lnch= Spnng, \ ,n , inch= Fig. 146. = = AIR PUMP OCCASIONAL. T. -Line = Coolej- Fig. 147. = 276 THE STEAM-ENGINE AND OTHER HEAT-MOTORS. per revolution by the low-pressure pistons. On the battle-ships thecorresponding ratio of independent air-pump piston displacementper revolution to the displacement of the low-pressure pistons perrevolution was 1/25, but the pumps only made 1/4 to 1/5 thenumber of revolutions made by the main engines. Bauer gives Directly Connected. Independent. Small cargo boat Medium cargo-boat. .. Large cargo-boat Mail steainer Deutschland Kaiser Wilhelm II Russian cruiser Bogatyr Navy gunboat Small cruiser Large cruiser Battleship 700 2,000 4,200 9,000 33,000 40,000 20,000 1,300 10,000 19,000 16,000 17 Definitions of Air-pumps.—If we refer to Fig. 16 we see thatthis pump draws from the condenser the condensed steam anda mixture of air and vapor. The injection water, however, isforced by the circulating pump through the tubes and out ofthe condenser
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