Compressed air production; or, The theory and practice of air compression . are inches. The small piston only encounters the heaviest pressure,and atioo lbs. pressure the resistance to its advance is 3,333 lbs. The re-sistance against tne large piston is its area multiplied by the pressurewhich is caused by forcing the air from the large cylinder into the smallercylinder, which is in this case 30 lbs. per square inch. But as this 30 acts on the back of the small piston and hence assists the ma-chine, the net resistance of forcing the air from the large into the smallcylinder is eq
Compressed air production; or, The theory and practice of air compression . are inches. The small piston only encounters the heaviest pressure,and atioo lbs. pressure the resistance to its advance is 3,333 lbs. The re-sistance against tne large piston is its area multiplied by the pressurewhich is caused by forcing the air from the large cylinder into the smallercylinder, which is in this case 30 lbs. per square inch. But as this 30 acts on the back of the small piston and hence assists the ma-chine, the net resistance of forcing the air from the large into the smallcylinder is equal to the difference of the area of the two pistons multipliedby the 30 lbs. pressure. This is 66 2-3 by 30, and equals 1,999 l°s- Hence1,999 lbs., the resistance to forcing the air from the large into the smallercylinder plus 3,333 lbs., the resistance in the smaller cylinder to compress-ing it to 100 lbs., is the sum of all the resistances in the compound cyl-inders at the time of greatest effort. This is 5,333 lbs. The time of great- 52 COMPRESSED AIR PRODUCTION. it. Fig. 24—Compound Air Compressor. Arrows on the water pipes show the direction of water pistons move as indicated by the arrow on the piston rod, steamand air circulate in direction shown by arrows in the cylinders. O—Air Relief Valve, to effect A- B- -Inlet Conduit for Cold Air. ?Removable Hoods oif Wood, easy starting after stopping with all C—Inlet D—Intake Cylinder. E—Discharge Valve. F—Intercooler. G—Compressing Cylinder., H—Discharge Air Pipe. J—Steam Cylinder. K—Steam Pipe. L—Exhaust Steam Pipe. N—Swivel Connection for Cross-head. pressure on the pipes. 1—Cold Water Pipe to CoolingJacket. 2 & 3—Water Pipe. 4—Water Overflow or Discharge. 5—Stone on end of Foundation. 6—Foundation. 7—Space to get at underside ofCylinder. 8—Floor line. est effort is at the end of the stroke, or when the engine is passing thecentre. In the single machine this res
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Keywords: ., bookcentury1800, bookdecade1890, bookid, booksubjectcompressedair
