Burn times

If were talking about time where a match is not needed to relight i can push 24 hours Right now i loaded aobut 15 hours ago and still plenty of coals to light, hoping to go till tonight, but dont really care, i loaded with some maple an oak split or two that was good and solid and then some more doady oak splits. i just looked and my cat probe is still at 600F

My smoke dragon will go 8 hours if I pack every cubic inch with wood, E/W to one side of the box, then N/S with small bits in the shallow box...

Burn time also varies greatly for me depending on heat demand. Yesterday was warm with temps in the 50's, when I loaded the stove last night it was 40* outside and got down into the 30's, today we're in the high 30's right now. I loaded last night with chunks at 10pm, it's currently 3:40pm and I'm trying to burn them down so I can load the stove since we're going out for the evening shortly. It's currently 72* inside with a stove top temp of 275*, I wouldn't be trying to load right now if I wasn't leaving. Anyway, no way chunks and uglies will get me 17-18 hours of meaningful heat when demand is high.

With this warmer weather I have been burning on a 12 hour reload shedule. Not bad for this little 1.4 cu ft Keystone. I've seen a good amount of coals as long as 16 hours a few times but 8-10 is very easy with this stove.

Man I want whatever that deal is that you have to record all that!

Can you point me in the right direction?
What is that red line for round 58.275?

Click to expand...

The wireless data logger is from Omega: http://www.omega.com/ppt/pptsc.asp?ref=OM-CP-RFTC4000A&Nav=dask01
(You also need a receiver.)

This a rather expensive setup, there are less costly options if you search around.

The red line at the bottom is ambient room temp. It is a little hard to see due to the scale of the chart but the temp is approx 70 °F

what are you using for a thermocouple etc?

Click to expand...

The TC is something I put together using a magnet, brass screw, spring and a screw lug type TC.
(See pic)

Cool..but how did you get the higher readings of the stove?

From the link..

Specifications
Internal Channel
Temperature Range:
-30 to 70°C (-22 to 158°F)

LLigetfa said:

Burn time is whatever you want it to be and BKs always take the prize.

Click to expand...

Amen on that one, that will be my next primary heating stove....I like my Napoleon 1900 but from what I hear about the BK's, i'm just about sold on them....

Cool..but how did you get the higher readings of the stove?

From the link..

Specifications
Internal Channel
Temperature Range:
-30 to 70°C (-22 to 158°F)

Click to expand...

The keyword is internal. The unit has a built in TC to measure ambient room temp.
The external TC plugs in to the side of the unit and will measure up to 1400 °F with a J TC.
http://www.omega.com/DAS/pdf/OM-CP-RFTC4000A.pdf

WES999 said:

Cool..but how did you get the higher readings of the stove?

From the link..

Specifications
Internal Channel
Temperature Range:
-30 to 70°C (-22 to 158°F)

Click to expand...

The keyword is internal. The unit has a built in TC to measure ambient room temp.
The external TC plugs in to the side of the unit and will measure up to 1400 °F with a J TC.
http://www.omega.com/DAS/pdf/OM-CP-RFTC4000A.pdf

Click to expand...

Got ya ..thanks!
Very interesting!

I have gotten some 12 hour burns on less than dry slab wood from my Rangeley and 10 hour burns almost daily. That's not even cramming the stove full, but maybe 2/3 full. Since I use slab, it tends to lay funny and leaves a lot of air space. If I had dry, consistently sized cord wood I would bet that I could get a 16 hour burn out of it! I'd like to test that theory as soon as I get some decent cord wood.

my old smoke dragon loaded with 10 splits of oak gives me 10 hours with coals left

Shouldnt you get an 8-10 hour burn time with 4 or 5 splits. Isn't it more of getting the temps up and turning down the air so as the main burning going on is smoke burning not wood burning.

Bub381 said:

Best yet is 11 hrs on 3 big maple splits cut this spring.

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Hello Bub, I was wondering how did you load those maple splits? N/S, E/W, front loaded, or top loaded?

Air setting? How tall is your flue alos?

Thanks!

IH3444

It seems to me that the longest burn times aren't necessarily the most efficient . If a stove gets a 24 hour burn time out of 100# of wood & another stove gets an 8 hour burn time out of 25# of the same wood , it might suggest that the shorter burn time is more efficient & also uses less wood to produce the same heat ???

Mainely Saws said:

It seems to me that the longest burn times aren't necessarily the most efficient . If a stove gets a 24 hour burn time out of 100# of wood & another stove gets an 8 hour burn time out of 25# of the same wood , it might suggest that the shorter burn time is more efficient & also uses less wood to produce the same heat ???

Click to expand...

Depends on outside temps and what goals you have ..heat requirements.
Always remember the bigger the fire usually means more air going in and more going up the flue...probably exponentially so.

6-7 hours of meanings heat, down to 300.
Overnight is always between 8-9 hours. We always have coals for an easy restart, but the temps are down.