Hi all...
Meeting you since a long time but with a topic worth to discuss about....
All of us know that the liquids are incompressible fluids while all the gases and air are compressible..this is why we call a machine which is used to increase the pressure in gases and air as compressor while the machine which is used to pressurize the liquid as pump (this is as per my opinion)...
Ok...if the liquids are incompressible, then how they get pressurized ???
Confusing right..?
Let us get into it...
As per the practical science, there is no such thing as an incompressible fluid in reality ; the term is just used as an approximation for very hard to compress.
Gases are easy to squash: everyone knows how easy it is to squeeze a balloon. Solids are just the opposite. If you've ever tried squeezing a block of metal or a lump of wood, with nothing but your fingers, you'll know it's pretty much impossible. But what about liquids? Where do they fit in? You probably know that liquids are an in-between state, a bit like solids in some ways and a bit like gases in others.
So water and any other liquids are compressible but you just have to apply such a massive pressure to change the density ( in order to compress any substance, its density must change. You can imagine it with the compression of air enclosed in a piston cylinder arrangement ).
To understand what happens, remember that all matter is composed of a collection of atoms. Even though matter seems to be very solid, in practical, the atoms are relatively far apart, and matter is mostly empty space.
However, due to the forces between the molecules, they strongly resist being pressed closer together, but they can be.
The water at the bottom of the ocean is compressed by the weight of the water above it all the way to the surface, and is more dense than the water at the surface. For example, liquid water changes its density (at ambient temperature) 0.024% with a change of 500 kPa in pressure.
A consequence of compressing a fluid is that the viscosity, that is the resistance of the fluid to flow, also increases as the density increases. This is because the atoms are forced closer together, and thus cannot slip by each other as easily as they can when the fluid is at atmospheric pressure.
And the following is how a hydraulic system works......
Why does water squirt so fast from a syringe / a water gun?
It is really hard to compress a liquid, so if you force the water up through the wide part of the syringe by pushing hard on the plunger at the bottom, where's that water going to go?
It has to escape through the top. Since the top is much narrower than the bottom, the water emerges in a high-speed jet.
Hydraulics runs this process in reverse to produce lower speed but more force, which is used to power heavy-duty machines.
Meeting you since a long time but with a topic worth to discuss about....
All of us know that the liquids are incompressible fluids while all the gases and air are compressible..this is why we call a machine which is used to increase the pressure in gases and air as compressor while the machine which is used to pressurize the liquid as pump (this is as per my opinion)...
Ok...if the liquids are incompressible, then how they get pressurized ???
Confusing right..?
Let us get into it...
As per the practical science, there is no such thing as an incompressible fluid in reality ; the term is just used as an approximation for very hard to compress.
Gases are easy to squash: everyone knows how easy it is to squeeze a balloon. Solids are just the opposite. If you've ever tried squeezing a block of metal or a lump of wood, with nothing but your fingers, you'll know it's pretty much impossible. But what about liquids? Where do they fit in? You probably know that liquids are an in-between state, a bit like solids in some ways and a bit like gases in others.
So water and any other liquids are compressible but you just have to apply such a massive pressure to change the density ( in order to compress any substance, its density must change. You can imagine it with the compression of air enclosed in a piston cylinder arrangement ).
To understand what happens, remember that all matter is composed of a collection of atoms. Even though matter seems to be very solid, in practical, the atoms are relatively far apart, and matter is mostly empty space.
However, due to the forces between the molecules, they strongly resist being pressed closer together, but they can be.
The water at the bottom of the ocean is compressed by the weight of the water above it all the way to the surface, and is more dense than the water at the surface. For example, liquid water changes its density (at ambient temperature) 0.024% with a change of 500 kPa in pressure.
A consequence of compressing a fluid is that the viscosity, that is the resistance of the fluid to flow, also increases as the density increases. This is because the atoms are forced closer together, and thus cannot slip by each other as easily as they can when the fluid is at atmospheric pressure.
And the following is how a hydraulic system works......
Why does water squirt so fast from a syringe / a water gun?
It is really hard to compress a liquid, so if you force the water up through the wide part of the syringe by pushing hard on the plunger at the bottom, where's that water going to go?
It has to escape through the top. Since the top is much narrower than the bottom, the water emerges in a high-speed jet.
Hydraulics runs this process in reverse to produce lower speed but more force, which is used to power heavy-duty machines.
