A BRAIN TEASER!
#1
A BRAIN TEASER!
look at this pic..got 2 fuel pumps with 12 psi each going in ..what is the pressure coming out ...? 12 psi or 24 psi...?
[IMG]local://upfiles/10419/F08B083F539A4C3F878AEE6719902AD2.jpg[/IMG]
[IMG]local://upfiles/10419/F08B083F539A4C3F878AEE6719902AD2.jpg[/IMG]
#2
RE: A BRAIN TEASER!
i think 16 psi by this logic. add up the incoming diameters (3/8+3/8) and divide the outlet (1/2) by that to get the ratio (2/3) of what's actually being put out. then multiply that by the incoming pressure (24) and it comes out to 16 psi. can anyone verify that?
#3
RE: A BRAIN TEASER!
12psi. if each pump makes 12psi, your combined pressure will be 12. even though you have two 3/8" inlets and one .5" outlet, you wont get more pressure, you are just choking the flow. choking the flow will not increase pressure, it will just constrict flow
#5
RE: A BRAIN TEASER!
wait i was thinking about this again. if the incoming pressure is gonna stay a constant 12, but it has to fit in a smaller hole, then the pressure has to increase to fit it through doesnt it? cause the fuel isnt gonna back up, its gonna keep coming at 12psi