Obviously, but it does work. I prefer doubt to unchanging reality.Although, if you suggest that, you may think that Archimedes' thrust increases with the volume of air during the ascent?
Machines on numeraries true or intox ??
Yes, the thrust increases with the expansion of the air (this is the principle of ludion).raymon wrote:Obviously, but it does work.Although, if you suggest that, you may think that Archimedes' thrust increases with the volume of air during the ascent?
It complicates the calculations, but for all that, it does not make it possible to recover more energy than what the compressor must provide to inject air at the point where the water pressure is maximum.
By neglecting the losses, the work done by the compressor is exactly the same as if the air remained in the canisters which come down to be compressed at the bottom of the circuit.
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Gaston wrote:
By neglecting the losses, the work done by the compressor is exactly the same as if the air remained in the canisters which come down to be compressed at the bottom of the circuit.
You only have to try to lower a can of 5l of air to 5m deep or 5 liters of water you will see if it is the same!
Dive with a buoy.
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izentrop
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Yes, but ...
For a container to float and therefore be able to rise if it is at the bottom, the weight (steel + air contained) must be slightly less than the weight of the volume of water displaced once submerged (count more if it must cause a mechanism) .
Close to the surface, so at 1bar, you need the same volume of air, whether it is airtight or open below (assumed to be blocked so that it does not turn over). So Archimedes thrust slightly greater than the weight of the can (negligible weight of air).
By cons at 10 m (it is simpler):
- for the closed container no change (constant pressure).
- The open canister will have half of its air replaced by water and the Archimedes push less strong but what counts, if we want to bring up a canister full of water:
the compressor must supply 2 X less air but with 2 X more energy, since the pressure to be given is double ... Match null!
It's clear ?
Do you still believe that Boyle's law brings an advantage?
http://www.tpeplongeesousmarine.sitew.f ... pression.D
For a container to float and therefore be able to rise if it is at the bottom, the weight (steel + air contained) must be slightly less than the weight of the volume of water displaced once submerged (count more if it must cause a mechanism) .
Close to the surface, so at 1bar, you need the same volume of air, whether it is airtight or open below (assumed to be blocked so that it does not turn over). So Archimedes thrust slightly greater than the weight of the can (negligible weight of air).
By cons at 10 m (it is simpler):
- for the closed container no change (constant pressure).
- The open canister will have half of its air replaced by water and the Archimedes push less strong but what counts, if we want to bring up a canister full of water:
the compressor must supply 2 X less air but with 2 X more energy, since the pressure to be given is double ... Match null!
It's clear ?
Do you still believe that Boyle's law brings an advantage?
http://www.tpeplongeesousmarine.sitew.f ... pression.D
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moinsdewatt
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