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Steam at 1 MPa, 300 C flows through a 30 cm diameter pipe with an average velocity of 10 m/s. The mass flow rate of this steam is: (d) 3.78 kg/s (a) 0.731 kg/s(b) 2.74 kg/s (c) 3.18 kg/s

Respuesta :

Answer:

[tex]\dot m = 2.74 kg/s[/tex]

Explanation:

given data:

pressure 1 MPa

diameter of pipe  =  30 cm

average velocity = 10 m/s

area of pipe[tex] = \frac[\pi}{4}d^2[/tex]

                 [tex] = \frac{\pi}{4} 0.3^2[/tex]

A = 0.070 m2

WE KNOW THAT mass flow rate is given as

[tex]\dot m = \rho A v[/tex]

for pressure 1 MPa, the density of steam is = 4.068 kg/m3

therefore we have

[tex]\dot m = 4.068 * 0.070* 10[/tex]

[tex]\dot m = 2.74 kg/s[/tex]

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