A horizontal, cylindrical, tank, with hemispherical ends, is used to store liquid chlorine at 10 bar. The vessel is 4 m internal diameter and 20 m long. Estimate the minimum wall thickness required to resist this pressure, for the cylindrical section and the heads. Take the design pressure as 12 bar and the allowable design stress for the material as 110 MN/m2.

Question

Jerome Goodwin

Engineering

17 June, 14:53

A horizontal, cylindrical, tank, with hemispherical ends, is used to store liquid chlorine at 10 bar. The vessel is 4 m internal diameter and 20 m long. Estimate the minimum wall thickness required to resist this pressure, for the cylindrical section and the heads. Take the design pressure as 12 bar and the allowable design stress for the material as 110 MN/m2.

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Answers (1)

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Alexzander Frederick · Answer 1

Answer: 0.021818m = 2.18x10^-²m

Explanation: Using Laplace principle

Design pressure is = 12 bar = 1200000N/m²

T = Wall thickness

Design stress=110Mn/m² = 110,000,000N/m²

Radius = diameter/2 = 4/2=2m

Design stress=Hoop stress = Pr/t where p=internal pressure or internal pressure, r=radius and t = wall thickness.

As Laplace equation stated.

110,000,000 = 1,2000,00 x 2/t

t = 2,400,000/110,000,000.

t = 0.021818m

t=2.18x10^-2m.