How much weight can I loose in 1 month prop: Discussion
04-20-2018
, 01:25 PM
04-21-2018
, 03:42 AM
04-21-2018
, 10:01 AM
tssss.... clearly up. 
04-22-2018
, 04:18 PM
Quote:
Physics problem for you guys. I was a bit baffled by this.
I had two tanks, one about 14' high with about 1000 gallons capacity, and one about 10' high with about 500 gallons capacity. The bigger tank was half full of beer with about 3 pounds of head pressure on it, and the smaller tank was empty with about 4 pounds of pressure. I was moving the liquid from the bigger tank to the smaller tank using a pump. Before starting to move the liquid, I connected the head space of each tank to the other using a balance line, basically just hose to connect the two.
When I connected them to each other, the pressure gauge that measures the head space of the big tank dropped to zero, and the small tank went up to about 7 (these numbers are approximate, I don't remember exactly what they were or whether they actually added up to each other). At this point, no liquid was moving and the tanks were only open to each other through the hose connecting the head space to each.
wtf was going on? I've done this before and the head pressures just equalize, as one would expect.
I had two tanks, one about 14' high with about 1000 gallons capacity, and one about 10' high with about 500 gallons capacity. The bigger tank was half full of beer with about 3 pounds of head pressure on it, and the smaller tank was empty with about 4 pounds of pressure. I was moving the liquid from the bigger tank to the smaller tank using a pump. Before starting to move the liquid, I connected the head space of each tank to the other using a balance line, basically just hose to connect the two.
When I connected them to each other, the pressure gauge that measures the head space of the big tank dropped to zero, and the small tank went up to about 7 (these numbers are approximate, I don't remember exactly what they were or whether they actually added up to each other). At this point, no liquid was moving and the tanks were only open to each other through the hose connecting the head space to each.
wtf was going on? I've done this before and the head pressures just equalize, as one would expect.
Are the tanks at the same level?
What is the vertical distance of the center of the pump to the bottom of the large tank? (Or center of pump to the top level of liquid of the large tank)
Centrifugal pump?
Rated gpm? Pump rpm?
You essentially created a back pressure on the pump and it can't overcome it. Just remove the hose and open both tanks to atmosphere and the liquid will start flowing (assuming the smaller tank is at the same level or below the larger tank)
Just realized I put this in the wrong thread...I can't post in the LC thread, so if someone would kindly quote this there.
Last edited by MeLoveYouLongTime; 04-22-2018 at 04:38 PM.
05-06-2018
, 11:57 AM
