[Steam-engine] boiler feedwater injector conection

[Blake]

I tried to answer some questions yesterday, but the email didn't 
go through.

As far as a feed water line into the vertical boiler under 
discussion, I would not run it into the bottom as it would stir up 
the sludge as water is put in. I would run it into the top of the 
boiler, but I would put a pipe inside the boiler to a point well 
below the water level, but not too close to the tube sheet.

As far as whether to keep dissolved solids and sludge 
(precipitated junk) in suspension, or let it settle out - I would 
say definately let it settle out so it can be blown out with the 
blowdown valve. Dissolved solids in the water will continue to 
build up as more impure water is introduced and clean water is 
evaporated as steam. The dissolved solids will cause high 
conductivity, scaling of the tubes, priming, and a bunch of bad 
things. You have to get rid of it. There are standards as to how 
much blowdown there should be in relation to how much water is fed 
to the boiler. A surface blowdown is good too as it will remove 
lighter stuff that does not settle out. Bottom blowdown should be 
opened wide at least once a day with full steam pressure.

If you can check conductivity of your boiler water, we try to keep 
it around 5000 microhms at work. Conductivity will basically tell 
you the amount of dissolved solids in your water.

For the feed water lines, use a cross if you can as they give full 
access to both directions for cleaning and inspecting.

Blake
Conneautville, Pa.

On Sun Nov 06 15:22:01 PST 2005, Jeff Smith 
<steamenginesmitty at yahoo.com> wrote:

> Ken,
> 
> I will agree with you on the use of a tee in that
> location, and I am even considering doing that in a
> few other locations.  I have even been told that the
> code in Canada requires many areas to be plumbed like
> that, but maybe someone could shed some more light on
> that?
> 
> Jeff Smith
> 
> --- Ken Majeski <fuller_johnson1 at msn.com> wrote:
> 
>> Well as long as were talking about feedwater iI
>> would like to mention something... I see many boilers at shows 
>> where the
>> feedwater is piped to a elbow at the boiler. You should always 
>> use a T or a
>> cross there as that way you can take out the plug and inspect 
>> and clean the
>> nipple as in hard water they can lime up pretty quickly. Also it 
>> will allow
>> you to keep tabs on the pipe condition there.
>> 
>> I mention this to the people with the engines and
>> they look at you like your talking Greek or something...???
>> 
>> 
>> 
>> Ken Majeski, Ellsworth Wis. Case Steam Engine, Rumely Oilpulls 
>> H, F, & R. Website, Http://www.pressenter.com/~kmajeski/
> 
> 
> 
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