3 ms·
Also, pumps must always be located at the bottom to pull liquid uphill by more than ~30'. Storing large tanks of diesel fuel on the 17th floor (or higher), is a
by ISL 14y ago
Also, pumps must always be located at the bottom to pull liquid uphill by more than ~30'. Storing large tanks of diesel fuel on the 17th floor (or higher), is a heavy and perhaps dangerous situation.
An always-submerged in-tank pump, not unlike that of a water well, powered via a sealed line from the generators above could, in principle, avoid this problem.
I hope the generators are able to power some sort of mechanical lifting arrangement. Manually hauling the drums is mighty hard.
- jlgreco 14y agoI remember it being 30' for water, but it should be a bit more for diesel (since diesel is not as dense as water). Mercury, an obviously much denser fluid, can only be pulled up by a vacuum a much shorter distance (around 760 millimeters iirc). Still, the extra height isn't going to buy you much.
- mhp 14y agoWhen I was carrying buckets of diesel up the stairs, I did notice that it was a lot lighter than water. Still not great after 17 flights, but a lot lighter than a bucket full of water.
- ISL 14y agoI should've remembered the density difference... According to omniscient Wikipedia, diesel is 83% the density of water, so the 33 feet that water can be lifted via suction becomes ~38'. The Trieste used the buoyancy of (incompressible) gasoline to enable a return trip from the bottom of the Mariana Trench. Strong work lifting all that fuel!