CALCULATION OF DIAMETER OF STEAM PIPE LINE

 CALCULATION OF DIAMETER OF STEAM PIPE LINE:

In an industry the process equipment needs 5000 kg/hr of saturated steam at 10 kg/ cm2(g). For a steam velocity of 25 m/sec, what will be the diameter of the steam pipe in ‘mm’, given that the specific volume of steam at 10 kg/ cm2(g) is 0.1802 m3/kg.

CALCULATION:

Specific volume of steam at 10 kg/cm2(g) = 0.1802 m3/kg

Flow rate = 25m/sec

Mass flow rate = 5000 kg/hr

= 1.389 kg/sec

Volume flow rate = 1.389 x 0.1802

= 0.25 m3/sec

Volume flow rate is also = (π/4 x D2) x25

Therefore, (π/4 x D2) x 25 = 0.25

Hence, diameter of steam pipe line ‘D’ = [(0.25/((π/4) x 25)]0.5

= 0.1128m

or 112.8 mm