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#Post#: 274--------------------------------------------------
boiler water level, searching for site tube source????
By: burnit0017 Date: August 21, 2013, 9:21 am
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Hi, does anyone know where I can find a suitable site tube that
can used with flash boiler? Acrylic or glass??
If spark plugs are used to detect the high and low water level
with LED electronic circuit, is there a problem with the spark
plugs rusting? Should the boiler be connected to earth ground?
#Post#: 275--------------------------------------------------
Re: boiler water level, searching for site tube source????
By: crazyguy Date: August 21, 2013, 12:52 pm
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don't know about site tube, but the spark plugs. can't you get
platinum ones? the led circuit could be it's own circuit and I
don't know why it would need an earth ground. Just put a 9v
battery, led and spark plug in a series circuit. close up the
gap to very small, it may work. I guess it depends how much
mineralization the water has.
I was wondering what you do about "scale" in a monotube boiler.
It sure clogs up my water heater and home humidifier.
#Post#: 333--------------------------------------------------
Re: boiler water level, searching for site tube source????
By: sut Date: September 2, 2013, 7:33 pm
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[PDF]
Building a Flash Steam Boiler Published by Lima ... - Smashwords
I don't know if this will help but worth a look! copy and past
into google
#Post#: 334--------------------------------------------------
Re: boiler water level, searching for site tube source????
By: admin Date: September 2, 2013, 10:01 pm
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I strongly advise against building a boiler with any kind of
pressure vessel. The Lamont design has a pressure vessel. If
you need a sight glass it isn't strictly a monotube. I don't
like criticizing but feel I need to be on record here
discouraging pressure vessel boilers. It isn't as dangerous as
a big pressure vessel, but still has potential to rupture and
release a lot of hot scalding water and steam.
I have had monotube boilers leak, rupture, break a weld...the
worst that happens is pressure drops and water leaks out.
A safety relief valve needs to be sufficient to release a lot of
volume. Air pressure tank relief valves aren't good enough when
using a pressure vessel.
The Lamont boiler was used for engines that were required to
deliver a wide range of power in a short span (Navy ships).
Similar to merging on a freeway and then coming off the gas. If
you are building a steady rpm type motor to turn a generator you
wont need the large reservoir of energy the Lamont is designed
for.
Think about eliminating the Lamont design aspect and just use
tubing.
I used a single sensor about 1/2 way up to sense water. This
was a spark plug screwed into a 1/4" MPT fitting in the monotube
circuit. I did a YouTube video on the very simple circuit for
activating a small electric pump. Google "lynx steam boiler
circuitry youtube" If you don't want to use the electric pump
you can control a solenoid to allow cool water in from an air
pressure tank filled with water. As long as the air pressure in
the tank is higher than boiler it will fill. I use 12 volt
solenoids on the inlet.
#Post#: 335--------------------------------------------------
Re: boiler water level, searching for site tube source????
By: crazyguy Date: September 3, 2013, 8:11 am
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What about using a pressure valve from a water heater? They are
supposed to release at around 150 psig.
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