Post by wiscojames on May 19, 2019 18:24:46 GMT -8
I am not recommending eating the stuff, but the question of safety has been raised. I appreciate the danger of breathing in the fibers, but I'm skeptical that consuming stray fibers would be particularly dangerous to one's health. For that matter, i wouldnt guess that using a 5 minute riser would produce much in the way of loose particulate. What say you?
If the fibers can cause your skin to itch, I would think that it could also irritate/damage your intestines if you eat it. You would have to look up some papers which researched the effects, as guessing is quite useless (and possibly dangerous).
Thanks, Trev, Stefan and Karl. As a preface, I'm not contradicting you or the conventional wisdom, but simply questioning.
Trev, in that material safety data sheet it says something like "unlikely entry pathway" for gastrointestinal effects, so nothing concerning from that source.
Karl, have you come across any citation for saying the fibers migrate through the intestines into other systems?
I plan to power an accumulating oven with a ceramic fiber blanket riser, so I think using it without an active fire should be alright, especially because I don't believe the fibers are being carried away during the course of the firing.
Mostly this thread was in the spirit of curiosity and "answers questioned".
Ingestion: An unlikely route of exposure. If ingested in sufficient quantity, may cause gastrointestinal disturbances. Symptoms will include irritation and may include nausea, vomiting, and abdominal pain.
Post by matthewwalker on May 23, 2019 18:08:00 GMT -8
As you guys know, I'm of the mind it's not any more dangerous than the other materials we use in building these stoves. The other materials we use all have very similar warnings and classifications as ceramic fiber. Take a look at the Material Safety Data Sheet for firebrick, here:
The second link states "Under sustained and steady high temperature over 1800, this material will possibly transform to crystalline silica(ciystobalite) in exposed portions." The same dangerous material that is a large part of most of our refractory materials.
I don't believe that the CFB in a stove build poses any more risk than the fly ash from burning or the dust from fire brick or refractory.
As for eating it, I don't worry about cooking downstream of the CFB cores. There is plenty of ash coating the sides of the cfb and I don't believe the fibers are getting in the gas stream in any significant amount.
That's not to say these materials don't pose a danger, they do. They all do. Wear protective gear when building stoves out of anything, even natural mud. Try not to make dust, and if you make dust, don't breathe it. If you are worried about dust in the flue path, I have bad news for you...
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
anounaki: Hi, why I cant upload photos when I make new tread to this forum?
Feb 28, 2020 2:09:40 GMT -8
ahansen: photos under 1 mb not possible?
Jun 4, 2020 0:09:21 GMT -8