Q (1 ) The pressure in an air tank is able to support a water column 15 meter hi
ID: 1862350 • Letter: Q
Question
Q (1 ) The pressure in an air tank is able to support a water column 15 meter high. Find the absolute air pressure in (PSI) if the local atmospheric pressure is 101 kPa. Take the density of water to be 1000 kg/m3
Q (2) A 10 m3 tank contains Oxygen (32 kg/kmol) at 7 bar and 33 C. How many cylinders could be filled from this tank if the cylinder capacity is 300 liter each? The initial pressure inside each cylinder is 0.5 bar and the required cylinder pressure after filling is 2 bar. Assume that the filling process is isothermal
Q (3)
A piston
Explanation / Answer
1) P = P0 + pgh
P = 1.01*10^5 + 1000*15*9.8
P = 2.48*10^5 Pa
2)
total quantity of oxygen at two bar would be:
7*10 = 2*V
V = 35m^3
V = 35*10^3 litres
for cylinder, volume of cylinder at two bar:
.5*.3 = 2*V1
V1 = .075 m^3
number of cylinder required:
35/.075 = N
N = 466.66 cylinders.
2 and 4 question are same
3) will solve and post it later
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