Preliminary Thoughts on the Output BTU's of My S130 Coal Gun

 
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lsayre
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Post by lsayre » Wed. Mar. 11, 2015 8:19 am

Lightning wrote:That's a pretty cool set of data flow there Larry, keep up the good work.. :)
Boiler is running lousy on Stockton due to the suddenly warmer weather. Suddenly seeing lots of partially burned in with the ashes, and the ash tub weighs a ton. The above data is indicative of a boiler that needs different coal when it is firing infrequently. Things were much better when it was really cold outside and firing happened on a regular basis. If I don't work my way through the Stockton and into my Blaschak soon I fear that any day now I will begin experiencing outfires again.

 
lzaharis
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Post by lzaharis » Wed. Mar. 11, 2015 9:35 am

Hello Larry,

Here's a thought to chew on and maybe experiment with.

What if the sides of the stoker grate had firebrick laid on
their sides with the long end up to keep the coal fire
centered and restricted by three inches in width times
the length of the grate?????

I have an fellow forum member that sells Yukon furnaces and stoves
that also sells firebrick for pizza ovens that is 12" by 12" in size

I have founds that the half bricks sold by tractor supply crack too easily.

You can buy firebrick in many sizes and thicknesses.

 
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lsayre
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Post by lsayre » Wed. Mar. 11, 2015 9:49 am

lzaharis wrote:Hello Larry,

Here's a thought to chew on and maybe experiment with.

What if the sides of the stoker grate had firebrick laid on
their sides with the long end up to keep the coal fire
centered and restricted by three inches in width times
the length of the grate?????

I have an fellow forum member that sells Yukon furnaces and stoves
that also sells firebrick for pizza ovens that is 12" by 12" in size

I have founds that the half bricks sold by tractor supply crack too easily.

You can buy firebrick in many sizes and thicknesses.
There is no stoker grate in a Coal Gun. It is like the Axeman Anderson AA130's. It stokes by ashing.

No firebricks either.


 
lzaharis
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Other Heating: kerosene for dual fuel Keystoker/unused

Post by lzaharis » Wed. Mar. 11, 2015 10:01 am

With the coal gun the solid stoker grate/channel iron tray rolls back and forth
and the combustion air is blown over the coal as it exits the hopper from what
I know of the design.

The firebricks laid on the long edge would ride on the sides of the tray
that rolls back and forth under the hopper spout and not interfere with
the spout.

I thought it may be worth persuing as you seem to have a batch of poor coal.

 
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Post by coldinmaine » Wed. Mar. 11, 2015 11:51 am

Are you trying to figure out the max output of your boiler, or the max output given the radiation you have installed in your home?

 
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McGiever
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Post by McGiever » Wed. Mar. 11, 2015 12:14 pm

The firebricks laid on the long edge would ride on the sides of the tray
that rolls back and forth under the hopper spout and not interfere with
Where the fire resides , is inside a water surrounded 11" diameter vertical tube ~ 12" tall, sitting on top of ~ 4"-5" of open cold ashes on a table like wedge or stepped grate that reciprocates 2" back and forth when and for as long as the control sensor demands.

Any effective brick arrangement would be tricky to say the least.


 
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coaledsweat
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Post by coaledsweat » Wed. Mar. 11, 2015 1:41 pm

lzaharis wrote:With the coal gun the solid stoker grate/channel iron tray rolls back and forth
and the combustion air is blown over the coal as it exits the hopper from what
I know of the design.

The firebricks laid on the long edge would ride on the sides of the tray
that rolls back and forth under the hopper spout and not interfere with
the spout.

I thought it may be worth persuing as you seem to have a batch of poor coal.
Combustion air is actually sucked up through many inches of ash. The firebrick would have no way to be supported without significant modifications, the ashing grate would just eat them on the first call to ash if installed without mods.

 
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Post by Rob R. » Wed. Mar. 11, 2015 7:44 pm

Larry, perhaps a mix of your coal supplies will allow trouble free burning in warm weather? If not, try the timer again.

 
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lsayre
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Post by lsayre » Wed. Mar. 11, 2015 7:54 pm

Rob R. wrote:Larry, perhaps a mix of your coal supplies will allow trouble free burning in warm weather? If not, try the timer again.
Unfortunately my Blaschak got dumped on top of about 800 lbs. of Stockton, and my bin delivers from the bottom. The right chamber of my 3 compartment bin is empty. I've got about 700 lbs. of Stockton left in my center chamber. And the left chamber has about 600 lbs. of Stockton topped off with Blaschak. Perhaps my best bet would be to empty out the center bin, and immediately fill the Right and center bin chambers with Blaschak. But my supplier doesn't offer discounted "sale" pricing until sometime in May. Alternately I could order 2 tons of Blaschak immediately and have the right chamber filled, and then mix that with the center chamber until empty, and then get the center chamber filled when the 'one day only' sale in May is on.

But if I buy 2 tons followed by 2 tons, I pay for shipping twice. If I buy 4 -5 tons all at once, I get the locked in one day only discounted price, plus I only pay for shipping one time.

 
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lsayre
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Post by lsayre » Sun. Mar. 22, 2015 10:57 am

I just observed this, for outside temperature = 26 degrees. Boiler outlet (zone supply) temp only recorded. Stockton pea.

~10:25 AM, Bedrooms zone calling singularly, zone valve opens and circulator comes on, 44 feet of fintube for this loop
Initial Boiler outlet temp = 189 degrees. About 32 gallons of water circulating for boiler plus this loop
-----------------------------------------
10:30 AM : Boiler fan on, Boiler = 170 degrees
10:31 AM : Boiler = 169 degrees
10:37 AM : Boiler = 170 degrees
10:39 AM : Boiler = 172 degrees
10:41 AM : Boiler = 174 degrees
10:42 AM : Boiler = 176 degrees
10:44 AM : Boiler = 178 degrees
10:45 AM : Boiler = 179 degrees
10:45 AM : Boiler fan off, Boiler = 181 degrees

Total time = 20 minutes, total time for boiler firing = 15 minutes

This is a typical performance for my Coal Gun when it is running well and a single zone calls.

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