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Bar to Liter

Bar to Liter
by azubia on 09/16/04 at 14:56:15

a tank of water  30 cm diameter for 1800 cms hight, botton side have a presure meter, if the tank is full what is the pressure

Re: Bar to Liter
by Robert Fogt on 09/16/04 at 21:06:18

First, calculate the volume of the tank:

(Pi * (30/2)²) * 1800 = 1272345.0247 cm³
1272345.0247 cm³ = 1272.3450247 liter

We know that water has a density of 1 kg/L therefore:
1272.3450247 liter = 1272.3450247 kilograms

Now we know the weight of the water the tank holds when full, just divide that by the area (not the volume) of the tank to get the pressure:
Pi * (30/2)² = 706.858347 cm²
1272.3450247 / 706.858347 = 1.8 kg/cm²

Now we know the pressure on the bottom of the tank, just need to convert that to the unit you need, bar:
1.8 kgf/cm² = 1.765197 bar

Re: Bar to Liter
by Remko on 10/15/04 at 04:49:26

There's no need for calculation of volume. The common equation pressure = density * height * gravitational constant (g) is all you need....

btw density = 980 kg/m3 and not 1000 kg/m3

pressure = 18m * 980 kg/m3 * 9.81 m/s2
pressure = 173048 kg/(ms2) = 173048 Pa
pressure = 1.73048 bar (gauge).... or 2.173048 bar absolute..

GRtz
Remko

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