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Updated: May 7, 2025
After it has been started, the speed of the compressor is such that the air attains a momentum due to its velocity and density; this serves a useful purpose in piling up the free air in the cylinder before the inlet valve closes on the return stroke. COMBINED STEAM AND AIR INDICATOR CARD: Taken from a 16x18 Sergeant piston inlet air compressor, meyer's cut-off at 3/10.
"They knew that tanks could be dangerous, and they knew that oil in a compressor is dangerous. You're right, Rick. They know plenty about it." "But it doesn't do us much good to know that they know," Rick concluded. "Well, now what? It will be a few hours before all the tanks are charged." "Where are Zircon and Tony?" "Napping. We probably should join them." "Not me.
It must not be inferred from the preceding remarks that the designer of an air compressor may neglect the question of clearance. On the contrary, it is a very important consideration.
Opposite as it may seem, heat is required to produce cold for steam is necessary to drive the compressor and pump of a refrigerating plant, and fire of some sort is necessary to make steam.
If the gas and the gravity neutralizer worked as Professor Henderson hoped they would, as soon as the ship was completed, all that would be necessary to start on the voyage would be to fill the aluminum bag and set the air compressor in motion.
He was rewarded by a number of sputtering cracks and a quantity of smoke. The compressor moaned and expired. Faussel was standing in the door with more papers, a shocked expression on his face. "What do you have there?" Brion asked. Faussel managed to straighten out his face and brought the folders to the desk, arranging them on the piles already there.
The compressor plant was hard at work forcing the water back in the caissons, the pulsometer pumps were sucking up streams of water that flowed without ceasing into the settling tank and off into the city sewers, the men in the caissons were sending up buckets full of silt-like gruel. The lawyer watched operations for a few minutes, then he asked for the owners' boring plan.
That pressure may be an active one, as in the case of the piston of an air compressor; or passive, as with the walls of a receiver or transmission pipe. It is usual to define compressed air as air increased in density by pressure, but we know that we may produce compressed air by heat alone.
But the first notable application of compressed air is due to Professor Colladon, of Geneva, whose plans were adopted at the Mont Cenis tunnel. The Sommeiller compressor was operated as a ram, utilizing a natural head of water to force air at 80 pounds pressure into a receiver.
In ordinary practice air compressors deliver the air at less than 100 pounds pressure, so that with a properly designed air cylinder the clearance space is so small that the capacity of the compressor is not materially affected.
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