RE: STEAM VELOCITY

Onil,
Yes, your equations are correct. The velocity will be the average velocity over the cross-section.

Ken Edwards, Ph.D., P.E.
Owner/Environmental Engineer/Programmer
LMNO Engineering, Research, and Software, Ltd. 7860 Angel Ridge Rd. Athens, OH 45701 USA Phone and fax: (740) 592-1890, <a href="/group/PipingDesign/post?postID=QK3XdEzfmqDjdSODCmRoFxK-K2baPSeDyBBW0t90dj_8PJx5P4BTJ3lvkhQnp9F-a8j5qwjB">LMNO@LMNOeng.com</a>

The fluid flow calculations website - <a href="http://www.LMNOeng.com">http://www.LMNOeng.com</a> Hydrology, hydraulics, flow measurement, groundwater, and unit conversions.

> -----Original Message-----
> From: nilo aninon [mailto:onil8001@yahoo.com]
> Sent: Wednesday, September 19, 2001 9:42 AM
> To: <a href="/group/PipingDesign/post?postID=SkZeQytZtZNiIHtrDzjBNNdmgEfr9OTdCWmcMaJCGsU8lQlyxGYPsnwYVdsq0B-f1UD-4u3sGp6TAARs4gSEuXz2HTs">pipingdesign@yahoogroups.com</a>
> Subject: [PipingDesign] STEAM VELOCITY
>
>
> 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
Received on Wed Sep 19 14:48:00 2001