The Rocket Woodstove Forum

Woodstove development using rocketstove technology
 
HomeHome  PortalPortal  GalleryGallery  FAQFAQ  SearchSearch  MemberlistMemberlist  RegisterRegister  Log in  

Share | 
 

 charcoal stove

Go down 
AuthorMessage
gadily
Moderator
Moderator


Posts : 1452
Join date : 2013-12-08

PostSubject: charcoal stove   Mon Jan 22, 2018 11:34 am

i decided to build a charcoal stove

3 1/2" box section x 500mm high a rocket stove cap for easy filling

this is at its prebuilt stage as i was waning to play with it to see what i could get out of it



ive now changed the bottom from square to round as i wanted an easy to put in burn plate which just slides into place inside of the square tube

i will be testing other things as well
Back to top Go down
Mr. Heater

avatar

Posts : 127
Join date : 2013-12-09
Location : Northern Illinois

PostSubject: Re: charcoal stove   Tue Jan 23, 2018 7:16 am

Looks interesting. Charcoal combustion needs lots of air ...... Is it going to be fan assisted combustion ?
Back to top Go down
gadily
Moderator
Moderator


Posts : 1452
Join date : 2013-12-08

PostSubject: Re: charcoal stove   Wed Jan 24, 2018 12:06 pm

not entirely correct used as boat heaters

the flue is small 1 1/2"





it lasts about 15hrs on one load with very little ash left depending on your charcoal that you use

heats about 200f at low whilst high is hot but not enough to burn old paint off painted pipe or box

that box section is small about 3 1/2" more built as a long term heater or overnight heater

part of reason why im building it
Back to top Go down
Mr. Heater

avatar

Posts : 127
Join date : 2013-12-09
Location : Northern Illinois

PostSubject: Re: charcoal stove   Wed Jan 24, 2018 1:01 pm

Ah, ok. I thought that you were building a charcoal cooking stove at first.

That's a nice little heater. The long burn time is a plus ! I like the fiberglass lighting wick idea.

I might try building one using the 6" x 6" dimension for heating the inside of a small (6' x 8') greenhouse. Just enough heat to keep the temperature above freezing overnight.

What kind of charcoal are you using ? Lump or briquettes ?
Back to top Go down
gadily
Moderator
Moderator


Posts : 1452
Join date : 2013-12-08

PostSubject: Re: charcoal stove   Thu Jan 25, 2018 12:08 am

you can use 4" box section either 3mm or 5mm ive used 5mm thick steel

the extra info too 6" is for convection of the heat from the stove so its an 1" around the system

im interested if the rocket stove reference can improve the heat output of this stove by preheating it however may effect its burning reference of hrs to burn through it

im not using any of them yet however

burn times vs ash deposit left after burning

http://www.nakedwhiz.com/burntimetest/lumpcompare.htm
Back to top Go down
gadily
Moderator
Moderator


Posts : 1452
Join date : 2013-12-08

PostSubject: Re: charcoal stove   Thu Jan 25, 2018 12:14 am

from other models out there






Back to top Go down
gadily
Moderator
Moderator


Posts : 1452
Join date : 2013-12-08

PostSubject: Re: charcoal stove   Thu Jan 25, 2018 12:20 am







Back to top Go down
Mr. Heater

avatar

Posts : 127
Join date : 2013-12-09
Location : Northern Illinois

PostSubject: Re: charcoal stove   Mon Jan 29, 2018 1:03 am

Nice heaters.

You can actually get the CO to burn with a blue flame for use with cooking.   I built a natural draft cooking stove that burns the charcoal. Works well, and no soot deposits on the cookware.  Similar to cooking with an electric heating element.

The air inside the stove body is preheated by the charcoal combustion.  The heated buoyant air flows through the charcoal bed (much like an internal chimney) at an accelerated rate.  When the charcoal bed temperature increases to bright orange, there is auto ignition of the carbon monoxide gas.



https://vimeo.com/225751776



Back to top Go down
gadily
Moderator
Moderator


Posts : 1452
Join date : 2013-12-08

PostSubject: Re: charcoal stove   Tue Feb 06, 2018 11:49 am

interesting vid as well interesting stove

ive also added some fins to mine changed the base to round




first test as is then test with the heat shield final test is an update to it
Back to top Go down
Mr. Heater

avatar

Posts : 127
Join date : 2013-12-09
Location : Northern Illinois

PostSubject: Re: charcoal stove   Wed Feb 07, 2018 4:18 pm

Looking good.  Heavy duty !  Let us know how the testing goes ....

I am getting the pieces together to build one from an asparagus steamer.   In process .....



Update ..... The heater is finished and ready for testing ... more to come ...




Update ... I filled the heater with small pieces of lump charcoal.  Bottom lit the charcoal.  Closed the lid, and the heater eventually went out.  The grade of charcoal that I am using is small, and the fine pieces block the air flow through the stove body.

To solve this problem, I used the basket that originally came with the steamer.  The basket sits slightly above the bottom of the pot.  The basket sides were bent inwards to allow air flow through the stove and around the basket full of charcoal.





In a second test, I filled the basket with the same type of charcoal.  I TOP lit the charcoal, as it's much easier to light with a propane torch from the top of the heater.  Closed the lid, and the heater works just fine now.  The heater slowly reached operating temperature as the charcoal burned.  The heater sides get VERY hot.  The charcoal load burned for four hours set at maximum heat.  All of the charcoal burned, and very little ash was left in the ash pan after the burn.

I still have to work on a few "tweaks"", but the heater works well.


Last edited by Mr. Heater on Wed Feb 14, 2018 2:55 pm; edited 1 time in total
Back to top Go down
gadily
Moderator
Moderator


Posts : 1452
Join date : 2013-12-08

PostSubject: Re: charcoal stove   Wed Feb 14, 2018 10:05 am

your beating me to it as ive got other things in the way for me to get mine finished

still got testing to do on it

looking a really nice build there as well
Back to top Go down
Sponsored content




PostSubject: Re: charcoal stove   

Back to top Go down
 
charcoal stove
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
The Rocket Woodstove Forum :: Main :: Rocketstoves (ideas and research members only) :: Show us your stove-
Jump to: