Question & Answer

According to the problem,

Q = 2400 m3 /h = 40 m3 /min ; p = 1.4 N/mm2 ; v = 30 m/s = 1800 m/min ;

Tensile stress : σt = 40 MPa = 40 N/mm2

1st part:       Inside diameter of the pipe

We know that inside diameter of the pipe,

D=1.13√Q/v=1.13√40/1800=0.17m=170mm   (ANSWER)

2nd part: Wall thickness of the pipe

It is known that that for a steel pipe, Constant (C) = 3 mm. Therefore wall thickness of the pipe,