Creating pressure using water flow
Creating pressure using water flow
(OP)
I am trying to find a way to fill and empty a ballast system on a boat without using any type of pumps. By using an underwater intake the ballast tanks are easy to fill by simply driving the boat at high speeds, forcing the water into the tanks. However, I was trying to find a way that I could use rushing water to create air pressure or suction that would make it easy to empty the tanks quickly and efficiently. If you could give me any basic ideas to experiement with it would be a big help. Thank you.





RE: Creating pressure using water flow
Blacksmith
RE: Creating pressure using water flow
Set up any sort of a venturi device and you get the same effect.
PUMPDESIGNER
RE: Creating pressure using water flow
Since the water pressure from driving the boat forces water into the tank through (I assume) forward facing inlet you could install another valved outlet facing backward, perhaps in the transome.
The negative pressure from the water flowing across the backward facing outlet would cause the water to flow out of the tank.
This would work similarly to taking a transome plug out and driving the boat to drain water out of the bilge.