- #1

Ciocolatta

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If there's a simple pipe and pump circuit and the pump and water properties remain the same but we increase or decrease gravity, what happens?

I know that in a closed pipe conduit with fluid flowing around, nothing would change because I think in Bernoulli's equation, as height is the same (closed conduit), so that would cancel out the rho.g.h term and hence rendering gravity irrelevant in the equation.

However...am I right to conclude -->

a) if

**not a closed conduit**, say pumping liquied from a low tank to a high tank, decreasing gravity would mean the pump could provide a greater head because of change in pressure = rho.g.h.

Also, gravity change = atmospheric pressure change. So would liquid vapour pressure change if atmospheric pressure changes?

b) say we have a

**mini cooling tower**(like one we made ourselves just to do some experiments to practice mass and energy balances) so there's liquid and gas flux to worry about.

firsrtly, is this a closed conduit? I was thinking it's not closed because the liquid pumped through pipes has to drip out of these pipes and into the cooling tower but then the liquid returns to the first tank and is pumped around again.

your thoughts?

thanks!