Maximum lift for diesel fuel at ambient temperature
Maximum lift for diesel fuel at ambient temperature
(OP)
If you you could draw a perfect vacuum in a vertical pipe what height could you lift automotive diesel fuel, before it would start to vaporize at 40 Deg C.





RE: Maximum lift for diesel fuel at ambient temperature
RE: Maximum lift for diesel fuel at ambient temperature
Of course, at absolute zero the diesel would be boiling anyway.
Starting at atmospheric pressure, the lift height can only be a maximum of 10m.
0.114 PSI = 0.00786 BAR(NOT CHECKED)
Under gravity 1 BAR = 10m HEAD
This suggests that you could lift the fluid almost 10m, how accurate do you need to be?
Adrian
RE: Maximum lift for diesel fuel at ambient temperature
Take Ione's vapor pressure into consideration, but as I recall, various grades of diesel at high ambient temperatures can have vapor pressures of up to just under 0.5 psi, and I'll use that, just to be conservative. With 14.73 lbs/in2 of absolute atmospheric pressure on one side and 0.5 psia vapor pressure on the other, 14.73-0.5 = 14.23 psia pressure differential, which will lift diesel by roughly 14.23 psia * 144 in2/ft2 / [(Specific Gravity of Diesel40°F=0.82) * (den_water60F = * 62.4 pcf)] = 40.0 feet or appx. 12.2 meters.
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hydromech, 1 Bar will lift water 10 meters, but will lift diesel by 12.2 meters. SG for diesel is not same as SG of water.
We are more connected to everyone in the world than we've ever been before, except to the person sitting next to us. Lisa Gansky
RE: Maximum lift for diesel fuel at ambient temperature
Patricia Lougheed
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RE: Maximum lift for diesel fuel at ambient temperature
We are more connected to everyone in the world than we've ever been before, except to the person sitting next to us. Lisa Gansky
RE: Maximum lift for diesel fuel at ambient temperature
We are more connected to everyone in the world than we've ever been before, except to the person sitting next to us. Lisa Gansky
RE: Maximum lift for diesel fuel at ambient temperature
I have been away for the weekend
My question was related to a pumping question for diesel fuel as I was not sure how far diesel could be lifted before it would vaporize and not be able to be pumped which is around -14.2 PSI which = 12.2M not taking into account any flow or friction loss.
Would any know of a computer program to calculate flow rates friction losses and pipe sizes for correct pumping of diesel fuel.
Noel
RE: Maximum lift for diesel fuel at ambient temperature
if you do not know how to solve your problem, how in the heck do you expect a computer program or us to solve the problem for you?
How is your fluids class progressing?
good luck!
-pmover
RE: Maximum lift for diesel fuel at ambient temperature
RE: Maximum lift for diesel fuel at ambient temperature
Noel