brick chimney with a liner i think is clay.

brick chimney with a liner i think is clay.

PostBy: focalpoint62 On: Thu Dec 05, 2013 8:13 pm

Hey everyone focalpoint62 here

Have a stupid question.
i have a wonderlux wood/coal circulator and my chimneyis double brick with a clay or cement liner. I know its clay at the top.

how warm should it get when burning? i put my hand on the chimney ans its more than warm it on the verge of hot. is this a danger? and if so do i need to line it? right now im burning wood and am going to start my coal in about 2 weeks when i get paid.

please dont think im stupid. Im new at this. :roll:

Thanks,

focalpoint62
focalpoint62
 
Hand Fed Coal Stove: wonderluxe wood/coal stove
Coal Size/Type: nut anthracite
Stove/Furnace Make: vogalzang
Stove/Furnace Model: wonderlux wood/coal

Re: brick chimney with a liner i think is clay.

PostBy: grumpy On: Thu Dec 05, 2013 8:17 pm

Welcome, I would think the hotter the better with wood, unless its on fire :shock: Lets see what others say..
grumpy
 

Re: brick chimney with a liner i think is clay.

PostBy: focalpoint62 On: Thu Dec 05, 2013 8:23 pm

Thanks grumpy.
I looked down the chimney and didnt see any deposits on the side so to speak, and the brick takes a couple of hours to heat up so am i being paranoid?
focalpoint62
 
Hand Fed Coal Stove: wonderluxe wood/coal stove
Coal Size/Type: nut anthracite
Stove/Furnace Make: vogalzang
Stove/Furnace Model: wonderlux wood/coal


Re: brick chimney with a liner i think is clay.

PostBy: freetown fred On: Thu Dec 05, 2013 8:24 pm

YES---There's no stupid questions here fp--welcome to the FORUM--you should be fine without a liner---keep us posted on progress or lack of ;) I believe grumpy is on the money here.
freetown fred
 
Hand Fed Coal Stove: HITZER 50-93
Coal Size/Type: BLASCHAK Nut/Stove mix

Re: brick chimney with a liner i think is clay.

PostBy: focalpoint62 On: Thu Dec 05, 2013 8:28 pm

I forgot to say that it goes up thru the middle of the house from the basement. then goes thru the floor, up and in the attic it is always cold. in the bedroom i opened up the wall and it is more than warm but not too hot. brick and clay radiating? am i being a big chicken? When i staet burning my coal, i have read that i can damper the stove down? how cool can i run it.

thanks,

focalpoint62
focalpoint62
 
Hand Fed Coal Stove: wonderluxe wood/coal stove
Coal Size/Type: nut anthracite
Stove/Furnace Make: vogalzang
Stove/Furnace Model: wonderlux wood/coal

Re: brick chimney with a liner i think is clay.

PostBy: grumpy On: Thu Dec 05, 2013 8:34 pm

When I burn wood 900* or a 1000* stack temps are not unheard of if I'm burning hot when its really cold outside, so the chimney can warm up, but thats good for wood.

When you switch to coal it will be cool if not cold.

You can damper it down with wood too.
grumpy
 

Re: brick chimney with a liner i think is clay.

PostBy: Rob R. On: Thu Dec 05, 2013 8:49 pm

If you are burning wood in a pot belly stove, the stack temperature is probably very high. Not uncommon to heat up the masonry when burning long and hard with high stack temperatures. '

You will be shocked at how much cooler the pipe and chimney is when burning coal.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

Re: brick chimney with a liner i think is clay.

PostBy: Freddy On: Thu Dec 05, 2013 9:21 pm

Rob R. wrote:You will be shocked at how much cooler the pipe and chimney is when burning coal.


Bingo! Concerning chimney's, burning coal is much safer than burning wood. Wood brings the fear of a chimney fire because of creosote accumulation. Coal has zero creosote. Between that & the fact that coal sends less heat up the chimney, you'll be safer by far. Coal does bring the chance of CO hence a couple of CO detectors are mandatory. Any fire has some safety concerns, but I'm betting that coal has fewer problems than wood on an annual basis.
Freddy
 
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined

Re: brick chimney with a liner i think is clay.

PostBy: SMITTY On: Thu Dec 05, 2013 9:34 pm

If you think about temperature, and what it does to combustibles, I think even holding a 300° brick to a plastic gasoline can wouldn't do much. Maybe melt through the can, and the gas would evaporate super-fast into a pure-white foggy mist ... without ever igniting. How do I know this? Well, I've blown many a fuel line in my day, and have had 700° steel sprayed with gasoline without an issue. Also have seen a 300° Harley-Davidson cylinder head (while sitting in traffic) become doused with about 2 gallons of gas - again without incident.

Now think about it - if your chimney got to be 300° on the outside, just imagine how hot it would have to be on the inside! My guess would be 4 to 5 TIMES that. So if gasoline won't combust (without a spark ...) at 300°, I can place a very sure bet that wood won't in a million years. ;)

I've got a fairly decrepit, unlined and crumbling masonry chimney that also runs through the center of my house. It also jogs in 2 different directions on it's way to the roof. There's plenty of low to zero clearance spots as well. While burning wood, I've had 4-500° stack temps result in a chimney temp of maybe 150° - uncomfortable to hold your hand on, but no possible way it will ignite much of anything. Been burning coal and oil in this chimney for 10 years. Cleaned it for the first and only time in spring of '12. It's still good.

This place is 150 years old and an absolute tinderbox. Still, I'm 200% confident that this chimney will never cause a fire. I did all my worrying and testing in '05 when I got my first stove. All my worry was unfounded, brought upon by media stories of horror. It's good to be safe, but unhealthy to be unreasonable. :)
SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler

Re: brick chimney with a liner i think is clay.

PostBy: DePippo79 On: Thu Dec 05, 2013 9:51 pm

Focalpoint62, never be afraid to ask questions. This forum is loaded with good people. Sometimes topics get heated, but it's only human nature. It's how we all learn.

I only burn wood in fireplaces, but yes my single brick clay lined flues do get pretty hot when I have a raging fire going. This is in the attic, so I'm sure the chimney contained in the walls is a little hotter. Now the chimney I have the coal stove tied into also single brick and clay lined, is only luke warm to the touch. Usually only running 150-200 deg. on stove pipe. Hope this helps. Welcome again. Matt

PS: I burn my fires hot and use good seasoned wood so creosote is never a problem. I think a 1/4 inch layer of the junk is acceptable before needing to be swept. Since getting the coal stove only lit a fireplace once and that was today. Needed a fire fix.

Smitty beat me to it. My chimneys are also very old (130 plus years) and I'm not concerned. I did get alot of good advice from this forum when I started my coal journey. See my topic "Thermocrete or stainless steel".
DePippo79
 
Baseburners & Antiques: Glenwood Oak 40
Coal Size/Type: Stove, nut/anthracite

Re: brick chimney with a liner i think is clay.

PostBy: focalpoint62 On: Thu Dec 05, 2013 10:11 pm

Thanks guys!!!

I went and fired the stove up again and right now its warm but i can leave my hand on it pretty well. its cold outside abt 23 and the house is staying about 72 inside. not bad for a basment stove i bought for 650 dollars. i cant wait to try my coal out. anyway i cut old logs so i know they will be somewhat seasoned. My wife and bo are happy with the stove its a circulator. cant wait to try out my coal when i get paid next week. nappanee up in northern Indiana is about an hour from me and they sell it by the 40 pound sealed bag.

anyway thanks and hopefully i will learn alot here!!! :) :)
focalpoint62
 
Hand Fed Coal Stove: wonderluxe wood/coal stove
Coal Size/Type: nut anthracite
Stove/Furnace Make: vogalzang
Stove/Furnace Model: wonderlux wood/coal

Re: brick chimney with a liner i think is clay.

PostBy: 2001Sierra On: Thu Dec 05, 2013 11:27 pm

I have a insulated clay lined chimney I had built in 1980. 3 sides are exposed in the garage and 3 sides are exposed, there where spots that where slightly warmer than others, I can only assume the mortar joints of the block extended in and touched the tile transferring the heat. With my new Keystoker 90 there are really no warmer spots than other surfaces. Coal stack temps are typically much cooler than wood, so coal could be way friendlier on your install. Just an opinion like many others, hopefully you will be more comfortable burning anthracite.
2001Sierra
 
Hot Air Coal Stoker Stove: Keystoker 90 Chimney vent
Coal Size/Type: Rice
Other Heating: Buderus Oil Boiler 3115-34
Stove/Furnace Model: Keystoker 90 Chimney Vent

Re: brick chimney with a liner i think is clay.

PostBy: focalpoint62 On: Thu Dec 12, 2013 5:07 am

hey everyone, focalpoint62 here

update: bought 3 bags of nut franklin anthracite coal. comes in 40 pound bags. i did exactly like all you said and what i read. got into a hurry and added too much coal and the fire died down. so i grabbed some heat treated pallet wood made a pyramid with the wood and refired. waited until a half an hour and bingo the coals are caought, and im pleased with the heat so far. 4 degrees out with a 20 mph wind. Inside, 73 degrees right now, hopefully i will get the hang of it. the smell is different than wood when checking it. I bent a piece of emt conduit to stir the pile since the shaker part of my grate broke off.Oh well do it the hard way with plyers k.,
focalpoint62
 
Hand Fed Coal Stove: wonderluxe wood/coal stove
Coal Size/Type: nut anthracite
Stove/Furnace Make: vogalzang
Stove/Furnace Model: wonderlux wood/coal

Re: brick chimney with a liner i think is clay.

PostBy: freetown fred On: Thu Dec 12, 2013 6:26 am

What??????? Ya got no vice grips? :clap: toothy There's a lot of trial & error involved once you obtain the basics available here. Sounds like you're doin just fine:)
freetown fred
 
Hand Fed Coal Stove: HITZER 50-93
Coal Size/Type: BLASCHAK Nut/Stove mix