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OK: I don't get that second diagram showing how the "dripper" fountain works. How does the cooling/contracting air pull water up from the reservoir into the bot
by dtgriscom 3y ago
OK: I don't get that second diagram showing how the "dripper" fountain works. How does the cooling/contracting air pull water up from the reservoir into the bottle? Why doesn't it just allow the water pushed up through the top pipe back into the bottle (which it somehow also does)?
There's a one-way valve at the top of the pipe from the lower reservoir to the bottle, and perhaps if there was another at the base of the top pipe to keep the water from flowing back it would work, but clearly there's no such valve.
And the same mechanism powers a number of the other systems; how do they all work?
- imchillyb 3y agoThe top pipe is submerged, and the other pipe is a simple valve. As the volume inside the container cools, the air pressure reduces, since the pressure of air outside the container is connected to the volume of water underneath, the pressure of air pushes the volume below and that squeezes the water past the valve at the top. The pressure from the column of air at the top pipe is not sufficient to overcome the volume of water in the closed container, and so remains neutral. That's the best I can describe this effect for you. ChatGPT would probably do a better job.