Control Engineer and a coal stove....

 
titleist1
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Post by titleist1 » Mon. Nov. 05, 2018 8:20 am

Trimixdiver wrote:
Sun. Nov. 04, 2018 1:05 pm
I also have a Nest camera monitoring the fire in real time. I wish I could use live video as the background, oh well.
I was cornfused......i thought the pic of the burning coal was live! :oops:

That is a pretty neat set up. If I get some boredom time on my hands this winter between rehab projects I may play with something similar.

 
Trimixdiver
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Hand Fed Coal Stove: Harman Mk 2
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Other Heating: Veissmann Vitodens 200w

Post by Trimixdiver » Mon. Nov. 05, 2018 11:33 am

CapeCoaler wrote:
Sun. Nov. 04, 2018 9:15 pm
How about grabbing a frame every 60 seconds and replace as background...
Can’t, it’s an industrial panel, no outside holes.

 
Trimixdiver
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Post by Trimixdiver » Mon. Nov. 05, 2018 11:35 am

So I put up the trusty manometer to give me redundancy and verify my electronic Manometer.

And added a FC barometric damper

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Trimixdiver
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Post by Trimixdiver » Fri. Nov. 09, 2018 10:14 am

So I got her running again. The new damper is making a big difference. Harman calls for .06wc, any harm in running it at .07wc?

 
Trimixdiver
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Post by Trimixdiver » Fri. Nov. 09, 2018 10:15 am

Looking good

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titleist1
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Post by titleist1 » Fri. Nov. 09, 2018 11:28 am

Very Cool set up!! .07 may be a little strong and you may be sending some heat up the chimney but its not too bad. I set my baro to run the Mark III at .04. I think you need to learn bit from running it to see how your chimney and stove work in fluctuating conditions with respect to coal burned and heat output you get. I also watch (manually) my flue pipe temp compared to stove body temp.

 
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coaledsweat
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Post by coaledsweat » Fri. Nov. 09, 2018 12:16 pm

At .07 you are giving up heat to the outside, back it down to .06.

 
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Lightning
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Post by Lightning » Fri. Nov. 09, 2018 12:39 pm

Even lower than that is okay. I keep my hand fed furnace between -.025 and -.035"wc.

Current pic below, via remote IP cam.

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Trimixdiver
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Post by Trimixdiver » Fri. Nov. 09, 2018 5:21 pm

Thanks, I will start playing with it. Right now I’m at .06 and flue temp after the baro damper is at 165f. Is that a high temp? What is a good flue temp?

 
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Lightning
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Post by Lightning » Fri. Nov. 09, 2018 5:29 pm

Keep in mind that stove pipe temps vary quite a bit due to many variables. You should measure between the stove and baro since the baro allows cooler room air into the pipe that will influence your pipe temp. But generally speaking, depending on how hard you are demanding heat it can vary between 130 and 250 degrees. Plus or minus those numbers on occasion. You won't see the high temps associated with a wood fire, like 400-500 degrees. Air turnover is much slower in the fire box of a coal fire as compared to wood so the heat has more time to be radiated by the stove body before going up the chimney.


 
Trimixdiver
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Post by Trimixdiver » Thu. Nov. 15, 2018 11:05 am

So I have been running for a week! Finally know how much to shake and poke from the bottom. Got a couple buckets of stove coal, threw some on last night and almost lost the fire this morning, got it back with small additions of chestnut. Any tips with stove coal? Mix it or put a solid layer?
Thanks

 
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Lightning
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Post by Lightning » Thu. Nov. 15, 2018 3:36 pm

You can mix nut and stove size to get a little more mass in the fuel bed.

 
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PFrank
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Post by PFrank » Sun. Jan. 20, 2019 5:46 pm

What are you operating your primary draft with, a servo, some stepper motor, solenoids?
How much time from temperature changes and/or draft changes before output primary air changes?
Are you planning any other inputs and outputs.?

 
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Post by ddahlgren » Wed. Jan. 23, 2019 5:20 pm

I am working on the same thing with a Raspberry Pi B+ running Linux and wifi so I can log onto it with laptop or phone.

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