non-condensable gases generally leads to corrosion not water hammer.
the use of the vent may accelerate the failure. the trick is to
ensure that you have a lsight positive pressure in the fin fan by
purging it with nitrogen.
- In PipingDesign@y..., "marif_patel" <marif_patel@h...> wrote:
> The one of the probable reason for tube failure is water hammer
due
> to non condensable gases in the steam. The best solution I have
> experienced in one of such problem was to unplug one of the tube
> plug at the outlet of discharge chamber of fin fan cooler and
> install high point vents. If the steam loss is very high, consider
> installing condensate drum at the outlet of finfan cooler .
>
> Arif Patel
> AM Consulting Engg. Co.
> Saudi Arabia
>
>
>
> -- In PipingDesign@y..., "mechengr1977" <mechengr1977@y...> wrote:
> > fin fan is actually trademark by Hudson (now McDermoot) and has
> now
> > been accpeted as the generic desc for finned air coolers
whtether
> > induced or forced. We have use of lot of these fin fan coolers
> > (Hudson and GEA) in our condensing system. Most of the problems
> that
> > i have been involved with is assoicated with the accumulation of
> > dirt in the tube banks, high vibration of the fan, and corrosion
> of
> > the finned tubes. My guess is the buckling of the tube is a low
> > risk failure event due to the inherent operating limits of the
> > cooler itself. We have actually consider such event the first
time
> > we have tried using a ferrules supplied by CTI to repair a
leaking
> > fin fan tubes.
> >
> >
> > --- In PipingDesign@y..., Sachin_Bapat@r... wrote:
> > >
> > > Views are invited from team members about probable causes of
> > buckling of
> > > air fin fan cooler tubes .
> > > Regards
> > > Sachin Bapat
Received on Thu Nov 21 07:31:00 2002