Post by scottiniowa on Nov 16, 2017 4:55:36 GMT -8
I know in general, we use what we got for mass material, but in this case, I can get a lot of different things.
One of them being what we call sugar sand, a very fine sand that has smooth edges rather than sharp so not suitable for concrete. Thus pretty cheap and mainly used for fill. (local sand pit wash outs)
I have a very large (internal ) cinder block wall behind the stove, but need to fill the mass area between this.
This is a basement situation, so will have to carry in/down everything. Stove works great, now have to (would like to better) store the heat, produced.
This sand could fill every void, but have not really seen it used, rather, rocks-gravel-cob mixtures have been shown often. I don't think there would be any insulating effects with the sand, but thought I would ask those in the know!
I've not used that particular type of sand but I have used loose river sand (smoothed edges from being under flowing water) and it's more insulating than conductive. You can use it - but I would mix it at about 4:1 or higher ratio with clay. Since you have a form to hold everything together, you could probably get away with an even higher ratio.
Update- I have used some of the same clay used in ceramic's mixed with my Sugar sand and it is working well. I was watching some of Paul W's videos on his stoves (more than one) and in one he appeared and said he used p-gravel for the mass, I also have this close at hand and pretty inexpensive, though not near as cheap as the sugar sand. Certainly would be less work to "pour the P-gravel" around the pipes... Is this a good working way for mass storage of heat? I know there are many good ways, but I always have to keep in mind, that everything "gets carried into the basement"
Since the material isnt structural at all, why not just use soil? Dig it up, bring it down in buckets,pour it in the void, and tamp(stomp) it in place.
On the other hand, is the cinder block wall part of the foundation? If it is, you might not want to tie it to your mass. You might in fact wish to insulate your mass from the foundation wall and the huge heatsink that is the earth itself.
With all my posts, please keep in mind I have one cheek still firmly in the armchair...
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?
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ahansen: photos under 1 mb not possible?
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Sept 14, 2020 7:26:15 GMT -8
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Sept 14, 2020 7:29:27 GMT -8