Central Boiler FORGE 3500 Outdoor Coal Boiler

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Lightning
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Post By: Lightning » Fri. Dec. 21, 2018 12:54 pm

Yes is does. It's in the Reaction Chamber column. You can see in the graph that the fire gradually becomes more efficient with its use of oxygen. It's the only explanation since the BTU load does not change. Notice the water temp sloping upward while it's idling. It's going to hit 200 and shut off the combustion air in probably another hour or so.
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hotblast1357
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Post By: hotblast1357 » Fri. Dec. 21, 2018 12:59 pm

The btu load does change...

If it’s 50 outside vs 0 outside, the latter is colder air passing through the baseboard or whatever is in the loop.

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Lightning
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Post By: Lightning » Fri. Dec. 21, 2018 2:37 pm

hotblast1357 wrote:
Fri. Dec. 21, 2018 12:59 pm
The btu load does change...

If it’s 50 outside vs 0 outside, the latter is colder air passing through the baseboard or whatever is in the loop.
The air passing thru the baseboard is in the house. It's always between 60-65 degrees. :what:

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Lightning
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Post By: Lightning » Fri. Dec. 21, 2018 2:45 pm

Well maybe it gets down to 58 in the house when it's really cold out. It depends also if there are warm bodies home using lights, computers, tv's ECT lol

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hotblast1357
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Post By: hotblast1357 » Fri. Dec. 21, 2018 2:53 pm

If the temp never changes inside you wouldn’t need a source of heat..

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Lightning
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Post By: Lightning » Fri. Dec. 21, 2018 3:08 pm

So, how much of a BTU load change with 60 degree air convecting thru the baseboard vs 65 degree air?

Where's Larry? lol :)

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hotblast1357
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Post By: hotblast1357 » Fri. Dec. 21, 2018 3:21 pm

What I’m saying is, depending on the heat loss of the house, it’s going to have cooler air going through them.

Or does it just have more air going through them?

Something has to change because a house needs more BTU’s when it’s 0 outside than when it’s 50 outside.

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lsayre
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Post By: lsayre » Fri. Dec. 21, 2018 4:01 pm

Typically about 3-1/3% more heat energy (BTU) is required for each additional HDD to be overcome. But that is for systems that can keep up. For systems that can't keep up the HDD's are not being overcome and instead with each additional HDD experienced the house simply gets colder by one degree. For the latter case a steady state rate of energy demand is what is experienced.
Last edited by lsayre on Sat. Dec. 22, 2018 6:13 am, edited 1 time in total.


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hotblast1357
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Post By: hotblast1357 » Fri. Dec. 21, 2018 4:29 pm

So it all depends at what outside air temp does the system begin to fall short at, below that, yes nothing changes, but above it, it’s all dependent on temp change.

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Lightning
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Post By: Lightning » Fri. Dec. 21, 2018 4:48 pm

Imagine your house being heated by an electric heater that is just on constantly. The BTU output doesn't change. Same deal with this situation.

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hotblast1357
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Post By: hotblast1357 » Fri. Dec. 21, 2018 6:06 pm

I don’t think this discussion will solve anything with this setup.

Is he ever going to fix anything or?

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Lightning
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Post By: Lightning » Fri. Dec. 21, 2018 6:10 pm

He's just making due with what he's got. He plans on making it better, soon.

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hotblast1357
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Post By: hotblast1357 » Fri. Dec. 21, 2018 6:41 pm

The hi temp cut off needs to be raised to like 210-215.

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Lightning
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Post By: Lightning » Fri. Dec. 21, 2018 6:55 pm

hotblast1357 wrote:
Fri. Dec. 21, 2018 6:41 pm
The hi temp cut off needs to be raised to like 210-215.
I don't think it can be raised. It's an open system, no pressure. It'll boil at around 208 degrees due to altitude.

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lsayre
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Post By: lsayre » Fri. Dec. 21, 2018 7:47 pm

Lightning wrote:
Fri. Dec. 21, 2018 6:55 pm
I don't think it can be raised. It's an open system, no pressure. It'll boil at around 208 degrees due to altitude.
Or perhaps as low as 205 degrees whenever a low pressure front moves through.


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