Question

Substance is flowing in a pipe of 200 mm

inside diameter at an average velocity of 3
m/sec. At a given section of the pipe line
the pressure is 1.5 MM/absolute. What
is the flow work of 0.5 cubic meter, ex
pressed in joules passing this section ?

Answer 1

Answer:

The flow work is 99.991 Joule.

Explanation:

Here,

Diameter of pipe, d= 200mm= 0.2m

Velocity of substance, v= 3m/s

Pressure, P= 1.5mm hg= 1.5×133.322 Pa= 199.983 Pa

Volume, V= 0.5 m^3

We know, Area of flow= πr^2 = π(0.2/2)^2

=0.031 m^2

Again, flow work, W= P×V

= 199.983×0.5

= 99.991 Pa-m^3

= 99.991 Joule

So, the work done by the flow is 99.991 Joule.