hi everybody Im ghosting this forum for a while now,and i would like to say thanks to all of you for sharing your knowledge here. So i have build a 18cm / 7inch/ double bell, batch box system for a friend of mine ,which i would like to share with you.How you can see from pics, this stove has the fire chamber located in a hallway and the bell is located in a wall dividing two other rooms.Really nice set up i would say.Most of the bell walls been build out of Magnesium brick which have a hight heat conductivity.For part of the bell we have used fire brick.So the proportions of fire chamber are 25cm /9.84"/ wide,37cm/14.56"/height ,and 50.o5 /19.7"/deep.The heat riser is 1m tall /39.37"/ and insulated with fire wool 2.5cm/1"/thick.The ISA of two bells above each other is 7m square /75.34 square foot/ .The chimney is around 6m /19.68 foot/ tall and 35cm x 35cm /13.77" x 13.77"/ old brick chimney ,not perfect but it works quite well. The whole stove are single skin and will be covered with clay plaster So thx again for your valuable knowledge and looking forward your comments. Radek
hi and thx for the comments .Here is a few pictures taken during the build.I have one question , what kind of gizmo you guys are using to measure the temp of the gases inside a bell. I do have laser thermometer up to 900C but it measures only surface temperatures.Thanks again Radek
I have one question , what kind of gizmo you guys are using to measure the temp of the gases inside a bell.
I am using a digital two-channel thermometer. This device is capable of measuring 1370 C (2500 F) and is made to use a thermocouple, a thread that goes inside the bell and is sensoring the temperature with the tip of the thread only. Let's see, a large company such as Conrad should sell these. Yes, here it is, I do use a Voltcraft K102 together with this 1000 C (1830 F) thermocouple.
I have got some pictures of this stove finished by owner.There is 3cm /1 1/4 "/ of clay sand plaster with some custom made tiles .There is one quite strange thing.The green plaster was a mix of blue and yellow pigment and when the stoves are hot the green is changing its shade/we guess its the yellow pigment/and when the stoves cool it goes back to same shade of green.The dark red plaster around the fire chamber is home made Tadelack/marocan plaster/.
so here is the mix for my home made Tadelack.I do call it home made because around here you can get premix Tadelack material whith is quite pricey,but even for this home made mix you will need material made by company Baumit,im sure you can get it in Poland Robert.It is called Baumit Trassit plus and its a hydraulic lime of some kind.Than you will need ground Dolomit Lime rock,not hard to get in building supply or a nursary-garden store.This dolomit lime rock is in the mix instead of ground marble and if you wanna spend more money for the genuine ground marble no problem and the Tadelack shell will be propabuly harder.Next part in this mix is clay slip whitch you have to take thru fine strainer. And it all goes like this - 1.7kg of very fine sand,1.5kg of Dolomit Lime Rock or marble,1.5 kg of Baumit Trassit plus,0.5 kg of fine clay slip,1150 L of water,and pigment of you choice up to 10 percent of weight of all the ingredieces.Sorry Donkey its all in kilos. This mix is much much cheaper the original but the work which go in to put it on the wall is same as with the original mix.Whats really important is preparation of the base layer.It MUST NOT suck water otherwise the Tadelack mix will harden on you too fast and you will not have time to polish it.And how Donkey sad timing and a lot of work.
kkp: Mercedes: Benches don't get real hot. In fact, they are rather cool compared to other areas. You shouldn't need a mix like you described
Jun 7, 2018 18:10:52 GMT -8
maartenmartens: beste Peter, ik heb je eergisteren een mail gestuurd via het contact formulier op je website , heb je die goed ontvangen ? mvg Maarten Martens, architect - geobioloog (mail betreffende de bouw van onze eigen RMH)
Jun 20, 2018 13:21:57 GMT -8
martinm: any one here with info \ experience with heat (from a mass heater) distribution with ducts throughout two storey house ?
Sept 8, 2018 22:58:52 GMT -8
padica: Good morning, this is a wonderful subject, please someone can help me with the theme of double and triple combustion, how it is achieved, theory and design, thank you
Sept 15, 2018 7:13:40 GMT -8
wiscojames: I'm afraid you won't get a response to such a vague question - I suggest reading through some of the threads related to your questions before asking for an explanation. People will be very generous with their knowledge if your question is more specific.
Sept 18, 2018 4:48:00 GMT -8
daniel: in my experience as I am working now on something of that nature, I have thought of making a heat exchanger and distributing the heat through vents using a slower fan. Now after a few years I realize that mass heaters give out primarily radiant heat, for
Nov 30, 2018 12:48:38 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place...
Dec 16, 2018 18:10:49 GMT -8
vesuvius: High Temperature Glass options,
Jan 4, 2019 16:28:17 GMT -8
vesuvius: Do any of you have experience with using the glass from home oven doors on a rocket stove? I'd like to have a viewing port on my stove but don't want to fork out for new ceramic glass. Any thought as to whether it would take the heat of a rocket stove?
Jan 4, 2019 16:30:40 GMT -8
yaya: you dont need the blowair for that temp..
Jan 13, 2019 16:43:57 GMT -8
flybywire: Glass window from an old washing machine is designed to take high temps. Cheap solution to your need.
Jan 27, 2019 0:10:58 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place to have a discussion... it is for short announcements
Feb 7, 2019 0:11:23 GMT -8
coastalrocketeer: you won’t likely get replies to questions here, and it is not a spot that makes holding an ongoing discussion possible...
Feb 7, 2019 0:12:22 GMT -8
TexasGonzo: Sooooo glad I found this site! Its always rewarding to find such a super group of folks! To any and all, feel free to PM me anytime. Thanks for having me!
Mar 11, 2019 18:56:41 GMT -8
jlmtech: GADGET: CONSIDER USING A JET PUMP INSTEAD OF A BLOWER FAN TO INDUCE DRAFT; NO CLOGGING.
Mar 26, 2019 8:19:28 GMT -8
michaelegan: i am unable to open the sketchup files on my mac. I used sketchup a few years back but apparently the company now requires a subscription. does anyone have any advice/instructions on how to use the program or how to view pictures without spending money?
Aug 20, 2019 18:41:48 GMT -8
mannytheseacow: michaelegan: download AutoCAD student version for free... import .SKP
Aug 23, 2019 13:33:44 GMT -8
topbaza: hi everyone, been searching all over net and this is were i need to be i think!!
Sept 28, 2019 6:16:25 GMT -8