Eshland S 260 Rebuild

hotblast1357 · Post by **hotblast1357** » Mon. Feb. 12, 2018 5:21 pm

New meter reading 84.4

That’s 2.9 hrs at 20 lbs per hr is 58 pounds.

lsayre · Post by **lsayre** » Mon. Feb. 12, 2018 5:52 pm

hotblast1357 wrote: ↑
Mon. Feb. 12, 2018 5:21 pm
New meter reading 84.4

That’s 2.9 hrs at 20 lbs per hr is 58 pounds.

It will be interesting to see if (over time) the timer monitoring the fan equates to higher precision in gauging coal consumption vs. monitoring the ash cycles. I believe it should.

hotblast1357 · Post by **hotblast1357** » Mon. Feb. 12, 2018 5:57 pm

I believe so to.

So Larry can I determine what I’m burning the other 21 hours of the cycle? When I’m idling?

lsayre · Post by **lsayre** » Mon. Feb. 12, 2018 6:15 pm

hotblast1357 wrote: ↑
Mon. Feb. 12, 2018 5:57 pm
I believe so to.

So Larry can I determine what I’m burning the other 21 hours of the cycle? When I’m idling?

The only way I know to determine baseline (mainly idling) consumption is to idle for 3-4 days (or more), using no DHW or home heating the entire time, and see how much coal has vanished from your hopper (presuming that the fire stays lit over this time-frame).

My S130 eats 12 lbs. per day when loafing as described above (which will involve a minimum amount of fan operation).

The inherent inaccuracy here will be due to the fan running once or twice a day to maintain heat inside the boiler. If that can be monitored and then backed out, the rest is purely due to idle consumption.

My initial pure guess for an S260's lowest burn rate is about 0.01 lbs. per minute, or 0.6 lbs. per hour, but this will include some unknown minimal amount of fan run time also.

hotblast1357 · Post by **hotblast1357** » Mon. Feb. 12, 2018 7:00 pm

Lol alrighty then!

swyman · Post by **swyman** » Tue. Feb. 13, 2018 8:31 am

hotblast1357 wrote: ↑
Sun. Feb. 11, 2018 8:57 pm
What’s awesome with this new fan data, is that it proves that my boiler can indeed run at advertised input rating!!

Unlike many others...

Good data! Supposed to start warming up, might do that no fire test this week!

hotblast1357 · Post by **hotblast1357** » Tue. Feb. 13, 2018 8:47 am

Great!!

Was -8 here this morning! Lol

hotblast1357 · Post by **hotblast1357** » Sun. Feb. 18, 2018 5:35 pm

New meter reading is 101.8

That’s 20.3 hours

Took 430 lbs to fill hopper.

That’s about 21 pounds per hour of combustion fan running.

lsayre · Post by **lsayre** » Sun. Feb. 18, 2018 5:45 pm

hotblast1357 wrote: ↑
Sun. Feb. 18, 2018 5:35 pm
New meter reading is 101.8

That’s 20.3 hours

Took 430 lbs to fill hopper.

That’s about 21 pounds per hour of combustion fan running.

Very close to 260,000 BTUH input.

nepacoal · Post by **nepacoal** » Sun. Feb. 18, 2018 6:13 pm

How do you account for the 148 hours of idling in the BTUH calculations? Or am I thinking about it wrong?

lsayre · Post by **lsayre** » Sun. Feb. 18, 2018 7:10 pm

nepacoal wrote: ↑
Sun. Feb. 18, 2018 6:13 pm
How do you account for the 148 hours of idling in the BTUH calculations? Or am I thinking about it wrong?

Method is a few posts above within this thread. There isn't much consumption during idling.

nepacoal · Post by **nepacoal** » Sun. Feb. 18, 2018 7:15 pm

Got it.. I was thinking at 12 to 15 lbs per day idling it would take right at 100 lbs out of the equation. And reduce the BTUH accordingly. But if it was running at full capacity the efficiency would go way up too. Probably close to a wash in the calculations...

lsayre · Post by **lsayre** » Sun. Feb. 18, 2018 7:44 pm

nepacoal wrote: ↑
Sun. Feb. 18, 2018 7:15 pm
Got it.. I was thinking at 12 to 15 lbs per day idling it would take right at 100 lbs out of the equation. And reduce the BTUH accordingly. But if it was running at full capacity the efficiency would go way up too. Probably close to a wash in the calculations...

The problem is that the boiler doesn't just idle when it is burning 12 to 15 lbs per day at "idle". It actually fires a few times daily even when there is no user demand for the heat (since it radiantly sheds heat naturally at idle, and it then fires to recover the lost idling heat), so much of the 12 to 15 lbs. of minimal consumption comes from the firing cycles that occur during "idling". Sort of a catch-22 situation... But hotblast's timer records these firing times.... If it didn't fire at all for 24 hours, the daily "idling" consumption might (quite speculatively, as in, I'm guessing) be only 5 or 6 lbs.

Real idling consumption would need to be measured during an extended power outage.

Post by **coaledsweat** » Sun. Feb. 18, 2018 9:03 pm

nepacoal wrote: ↑
Sun. Feb. 18, 2018 7:15 pm
Got it.. I was thinking at 12 to 15 lbs per day idling it would take right at 100 lbs out of the equation. And reduce the BTUH accordingly. But if it was running at full capacity the efficiency would go way up too. Probably close to a wash in the calculations...

They only run wide open, like a draft horse. At idle, no air can pass through the 6-8" of ash to the fire, it essentially slips into a coma and throbs heat.

Pacowy · Post by **Pacowy** » Sun. Feb. 18, 2018 11:23 pm

If there were literally 0 combustion taking place there would be no "throbbing heat" over any prolonged period.

Mike