STEAM VELOCITY

From: <nilo>
Date: Wed Sep 19 2001 - 09:42:00 EDT

Hi everybody,

To anybody who is very much knowlegeable about this subject matter, please share a piece of your knowledge.

Is Q=A*V formula can be used in solving theoritical steam velocity? Say, I have already known the mass flow of steam in kg/hr. Then through the steam tables I can extract value for specific volume of steam in m3/kg. With the two data known, I think I can already solved for the velocity of steam using the above mentioned relation V=Q/A, where:

Q=volumetric flow, m3/hr
A=cross sectional area of pipe, m2

Substituting the value,
Q=mass flow of steam (kg/hr)*specific volume (m3/kg) Q=m3/hr

Therefore,
V=Q(m3/hr)/A(m2)
V=m/hr

I was quite confused because the result of my calculation is very far or too high compared with the data provided by some boiler accessories manufacturer.

Hope to hear from the experts.

Very truly yours,

Onil

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