Homemade Chubby Blower?

Homemade Chubby Blower?

PostBy: Coal-Chub-E On: Thu Apr 18, 2013 1:51 pm

I’m thinking about constructing a forced air blower system and attaching it to the outside rear of my chubby coal stove. I’d like to see if anyone has tried this already and how well it works, if at all.

Basically, I was thinking about buying 9 or 10 12” pieces of 2” metal tubing and connecting them with 180 degree elbows (or something similar) and there would be a 90 degree elbow on the last piece which would discharge the hot air from the back top of the chubby and into the room. A fan would then be attached to something similar to aluminum dryer vent tubing which, in turn, would be connected to the opening of the 1st tube. I’m picturing it to look like 10 12” tubes lying side by side connected by elbows in a top/bottom/top/bottom series. I would somehow attach this device to the rear of my chubby stove, once it heats up to 350 to 500 degrees, turn on the fan and blow hot air out the terminal side.

Would this work?

Thanks,
Eric
Last edited by Coal-Chub-E on Thu Apr 18, 2013 3:25 pm, edited 1 time in total.
Coal-Chub-E
 
Hand Fed Coal Stove: Coal Chubby
Stove/Furnace Make: Chubby Coal Stove

Re: Homemade Chubby Blower?

PostBy: michaelanthony On: Thu Apr 18, 2013 2:55 pm

... :? I'm picturing pieces of pipe stacked atop each other and connected with the "u" shaped elbows in a serpentine fashion behind the stove and the last pipe having an opening facing the front of the stove and warm air coming out. Why not place a fan behind the stove or where ever needed to get the warm air to the desired location?
michaelanthony
 
Hand Fed Coal Stove: Vigilant 2310, gold marc box, vogelzang pot belly coat rack
Coal Size/Type: Pea, and a little nut
Other Heating: Very cold FHA oil furnace

Re: Homemade Chubby Blower?

PostBy: Coal-Chub-E On: Thu Apr 18, 2013 3:10 pm

michaelanthony wrote:... :? I'm picturing pieces of pipe stacked atop each other and connected with the "u" shaped elbows in a serpentine fashion behind the stove and the last pipe having an opening facing the front of the stove and warm air coming out. Why not place a fan behind the stove or where ever needed to get the warm air to the desired location?


Sort of, think what a large old church organ looks like, the pipes being side by side and connected with elbows. My thinking is air would enter at room temperature and as it travels throughthe maze of pipe exit at 400 or 500 degrees. I'm thinking this would be much more efficient than a fan simply placed behind the chubby.
Coal-Chub-E
 
Hand Fed Coal Stove: Coal Chubby
Stove/Furnace Make: Chubby Coal Stove

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Re: Homemade Chubby Blower?

PostBy: dcrane On: Thu Apr 18, 2013 3:17 pm

The fact is on a radiant stove the blowers are more for the "public desire" for them more then the function of them. Because the shroud on a Chubby does not really wrap much of the surface area of the cumbustion chamber it utilizes "through" tubes over the firebed inside the cumbustion chamber (these tubes clearly need to be pretty heavy gauge since they are right over the firebed).

I do not think its worth attempting what your trying to do (#1 it would devalue the stove, #2 if your using tubes instead of channels and these tubes are outside the cumbustion chamber (as described) your putting a lot of layers between the hot coals and the air channels #3 very minimal return value)

A better way to achieve what your trying to obtain with a blower is to use room circulators/fans (sometimes called doorway fans).

By Virtue of being a Chubby, the stove generally has to be out "in the room" (it cant be set into an exsisting fireplace unless you have a rare fireplace), therfor your heat is out in the room already!
dcrane
 
Hand Fed Coal Stove: Crane 404

Re: Homemade Chubby Blower?

PostBy: carlherrnstein On: Thu Apr 18, 2013 3:22 pm

If you want to try to make more hot air you might think about putting a heat shield on the back of the stove about a inch or so away from it. That way it dosent look like crap and you wont have to listen to a blower.
carlherrnstein
 
Hot Air Coal Stoker Stove: combustioneer model 77B
Coal Size/Type: pea stoker/Ohio bituminous

Re: Homemade Chubby Blower?

PostBy: Coal-Chub-E On: Thu Apr 18, 2013 3:25 pm

dcrane wrote:The fact is on a radiant stove the blowers are more for the "public desire" for them more then the function of them. Because the shroud on a Chubby does not really wrap much of the surface area of the cumbustion chamber it utilizes "through" tubes over the firebed inside the cumbustion chamber (these tubes clearly need to be pretty heavy gauge since they are right over the firebed).

I do not think its worth attempting what your trying to do (#1 it would devalue the stove, #2 if your using tubes instead of channels and these tubes are outside the cumbustion chamber (as described) your putting a lot of layers between the hot coals and the air channels #3 very minimal return value)

A better way to achieve what your trying to obtain with a blower is to use room circulators/fans (sometimes called doorway fans).

By Virtue of being a Chubby, the stove generally has to be out "in the room" (it cant be set into an exsisting fireplace unless you have a rare fireplace), therfor your heat is out in the room already!



Thanks, Dcrane. The stove heats my house well. I was thinking of adding this for the real cold winter artic blasts that cause my HVAC to come on. Yeah, since the tubing would be on the exterior of the stove and being familiar with the chubby's fire pot size and in relation to where I'd like to put these pipes, I can see the what youre talking about.

My stove sits on a fireplace hearth with the rear top touching the top of the fireplace opening (I know this is a no - no). This summer, I plan on moving it out by another 15 inches. Hopefully that will allow more radient heat from the back of the stove to circulate better and not get trapped in the opening of the fireplace or spend too much energy heating my brick fireplace wall.

Carl, great idea, I looked into those, man are they expensive considering what they are - just a 3/4" by 4'X4' sheet of metal!!! But I probably need one since looking at an empty fireplace is unsightly.

Thanks,

Eric
Coal-Chub-E
 
Hand Fed Coal Stove: Coal Chubby
Stove/Furnace Make: Chubby Coal Stove

Re: Homemade Chubby Blower?

PostBy: dcrane On: Thu Apr 18, 2013 3:47 pm

Coal-Chub-E wrote:
dcrane wrote:The fact is on a radiant stove the blowers are more for the "public desire" for them more then the function of them. Because the shroud on a Chubby does not really wrap much of the surface area of the cumbustion chamber it utilizes "through" tubes over the firebed inside the cumbustion chamber (these tubes clearly need to be pretty heavy gauge since they are right over the firebed).

I do not think its worth attempting what your trying to do (#1 it would devalue the stove, #2 if your using tubes instead of channels and these tubes are outside the cumbustion chamber (as described) your putting a lot of layers between the hot coals and the air channels #3 very minimal return value)

A better way to achieve what your trying to obtain with a blower is to use room circulators/fans (sometimes called doorway fans).

By Virtue of being a Chubby, the stove generally has to be out "in the room" (it cant be set into an exsisting fireplace unless you have a rare fireplace), therfor your heat is out in the room already!



Thanks, Dcrane. The stove heats my house well. I was thinking of adding this for the real cold winter artic blasts that cause my HVAC to come on. Yeah, since the tubing would be on the exterior of the stove and being familiar with the chubby's fire pot size and in relation to where I'd like to put these pipes, I can see the what youre talking about.

My stove sits on a fireplace hearth with the rear top touching the top of the fireplace opening (I know this is a no - no). This summer, I plan on moving it out by another 15 inches. Hopefully that will allow more radient heat from the back of the stove to circulate better and not get trapped in the opening of the fireplace or spend too much energy heating my brick fireplace wall.

Carl, great idea, I looked into those, man are they expensive considering what they are - just a 3/4" by 4'X4' sheet of metal!!! But I probably need one since looking at an empty fireplace is unsightly.

Thanks,

Eric


I can understand why your thinking about a blower now or trying to get that heat out from the fireplace opening (frankly its exactly why my dad designed the 404), I assume you have a chimney blocker of some sort up in flu area (sheet metal is usual, I prefere durarock myself)... anyways your best bet here is to simply get a good quality metal cage fan that will sit to the rear of the fireplace opening and face out into the room (they make some really nice ones that will be even more quiet then a fasco or grainger blower and it will do exactly what your wanting to do for a cost of $29.95)
dcrane
 
Hand Fed Coal Stove: Crane 404

Re: Homemade Chubby Blower?

PostBy: carlherrnstein On: Thu Apr 18, 2013 3:54 pm

Im thinking of a curved peice of sheet metal held off the back of the stove by some spacers.
carlherrnstein
 
Hot Air Coal Stoker Stove: combustioneer model 77B
Coal Size/Type: pea stoker/Ohio bituminous

Re: Homemade Chubby Blower?

PostBy: michaelanthony On: Thu Apr 18, 2013 4:10 pm

I understand your situation, I too was new to coal burning and tried to get my stove to do things it wasn't designed for and I finally gave up and installed it according to it's design. My stove went from living room fireplace to basement, it was made to heat a large area with the blower continuously running, well that was too much for my 1100 sq. ft. ranch. It had a wonderful winter out of sight and ear shot and everyone was happy, stove never ran so good!
michaelanthony
 
Hand Fed Coal Stove: Vigilant 2310, gold marc box, vogelzang pot belly coat rack
Coal Size/Type: Pea, and a little nut
Other Heating: Very cold FHA oil furnace

Re: Homemade Chubby Blower?

PostBy: dcrane On: Thu Apr 18, 2013 9:19 pm

michaelanthony wrote:I understand your situation, I too was new to coal burning and tried to get my stove to do things it wasn't designed for and I finally gave up and installed it according to it's design. My stove went from living room fireplace to basement, it was made to heat a large area with the blower continuously running, well that was too much for my 1100 sq. ft. ranch. It had a wonderful winter out of sight and ear shot and everyone was happy, stove never ran so good!


The problem is most consumers are not like us here... they dont burn as faithfully and darn sure dont want to walk down the basement before bed... they want to view their fire and feel it directly when its burning and they simply want to get off their lazy boy and give it a quick shake and add a couple shovels of coal on their way upstairs, they also want their stove to look like a peice of furniture and be able to match it to their decor BUT they dont want it in the middle of their living room taking up valueable square feet living area and they darn sure dont want to look at an ugly stove pipe or stainless pipe running up the side of their homes... (this is the majority of consumers, we are the minority :P )
dcrane
 
Hand Fed Coal Stove: Crane 404

Re: Homemade Chubby Blower?

PostBy: ONEDOLLAR On: Fri Apr 19, 2013 6:18 pm

OldBlowerChubby.jpg
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Coal Chub E

This pic is of one of the first blower chubbys. Is something like this what you had in mind?
ONEDOLLAR
 
Hand Fed Coal Stove: 2014 Chubby Prototype
Baseburners & Antiques: Crawford #2 Base Heater
Coal Size/Type: Nut/Anthracite

Re: Homemade Chubby Blower?

PostBy: Coal-Chub-E On: Fri Apr 19, 2013 8:17 pm

ONEDOLLAR wrote:
OldBlowerChubby.jpg


Coal Chub E

This pic is of one of the first blower chubbys. Is something like this what you had in mind?


One$,

Yes, same principle. Do you know how successful that model was? How well it worked?

Eric
Coal-Chub-E
 
Hand Fed Coal Stove: Coal Chubby
Stove/Furnace Make: Chubby Coal Stove

Re: Homemade Chubby Blower?

PostBy: dcrane On: Fri Apr 19, 2013 9:00 pm

Coal-Chub-E wrote:
ONEDOLLAR wrote:
OldBlowerChubby.jpg


Coal Chub E

This pic is of one of the first blower chubbys. Is something like this what you had in mind?


One$,

Yes, same principle. Do you know how successful that model was? How well it worked?

Eric


lets assume it was changed for a valid reason ;) some of which i stated earlier
dcrane
 
Hand Fed Coal Stove: Crane 404

Re: Homemade Chubby Blower?

PostBy: JRLearned On: Mon Aug 19, 2013 8:33 am

Coal-Chub-E, did you ever attemp this?
JRLearned
 
Stove/Furnace Make: Chubby Stove
Stove/Furnace Model: FrankenChubby

Re: Homemade Chubby Blower?

PostBy: Lightning On: Tue Aug 20, 2013 11:04 pm

Coal-Chub-E wrote:Sort of, think what a large old church organ looks like, the pipes being side by side and connected with elbows. My thinking is air would enter at room temperature and as it travels throughthe maze of pipe exit at 400 or 500 degrees. I'm thinking this would be much more efficient than a fan simply placed behind the chubby.


It seems to me that he thinks he will yield more BTUs by extracting heat from the stove with external pipes soaking up the radiant heat. I'm afraid this isn't possible as its stated. This wouldn't happen. The pipe scenario and the fan scenario would yield the same amount of BTUs ultimately...

NOW - lets run the pipes THRU the stove.. This would turn out differently :D
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut/Stove Size Mix

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