Dear ones,
I do agree with Panchal; the steam flow during normal
operations is generally very very less, as it has to
cater to the heat losses in the system only. Normally,
the insulation is self sufficient to have the heat
balance, very little energy being drawn from the mains
in the steady state.
Only at the start of the run, there is more demand,
but never as high as to cause impingement and erosion
problems; of course, if the operation is supervised
properly.
Regards.
Ganga.
--- akpanchal <panchal_ak@yahoo.com> wrote:
> Hello,
>
> Thanks for the reply received regarding Steam
> Tracing.
> As said by Mr. Murthy generally 3mm Plate of same
> material as of core pipe is used for reinforcing at
> the area where steam from jumpers hit. But I just
> want
> to confirm that for jacket of 3" with 5 bar a. and
> length about 80 mtrs is it really necessary to use
> the
> plates, I have done some calculation for steam
> consumption in jacketed lines and from that mass
> flow
> rate I have calculated the velocity that would be in
> the jumpers which are 1" in dia. As far as my
> calculation are concern I have found very low
> velocities of about 2-3 m/sec.I dont think for low
> velocities, pads would be needed, isnt it ? hope to
> hear from anyone of you soon.
>
> Bye
>
>
>
>
>
> __________________________________
> Do you Yahoo!?
> Check out the new Yahoo! Front Page.
> www.yahoo.com
>
>
>
This archive was generated by hypermail 2.1.8 : Tue Mar 04 2008 - 11:40:37 EST