Upside down fish tank
- Thread starter Gobrian44
- Start date
The top can't be open or the atmospheric pressure would equalize and the water would come out of the tower. The air that is bubbling up has to be pulled out by a vacuum pump of some kind or it would displace the water in the tower eventually and you would have a giant tower of air over the tank of water.
Cats water towers and cups being pulled upside down out of water are both sealed at the top, like a culligan water tower. as water moves out it is replaced with air because atmospheric pressure pushes the air in until it equalizes again. If you put a hole in the top of the tower then all the water would come spilling out. Don't believe me then try it yourself.
Cats water towers and cups being pulled upside down out of water are both sealed at the top, like a culligan water tower. as water moves out it is replaced with air because atmospheric pressure pushes the air in until it equalizes again. If you put a hole in the top of the tower then all the water would come spilling out. Don't believe me then try it yourself.
Yes, it this incarnation air is being pumped out of the top to compensate for the bubbles. This is an odd exception. In most upside-down tanks, the top is simply sealed.
I looked up a video and found how they do it. They use a water pump hooked to a venturi to create the vacuum to suck the water out of the top of the sealed tower. You can either recycle the air you suck out and direct it back in, or you can pump air in through a pump and suck it back out through the venturi. Cool idea. I would like to see something like this in a giant application.
Really? All that work just to have bubbles in your upside down tank? Why not just leave it sealed?
