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suspended rocket mass heater  RSS feed

 
Posts: 24
Location: BG
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Im wondering......if a mass heater were suspended a few inches off the ground (say a suspended wooden floor - of adequate structural integrety) would this raise any problems.
Im thinking 4 cm angle (an old bed frame chopped up) constructed to accomodate fire bricks appropriately, as the base and enough leg/ground contact supports to spread the load and take the weight etc.

If constructed correctly I see only the possible benefits of more air circulation, an air fire gap instead of insulation with the floor and wall.

All thoughts and abuse gladly welcome - I will happily sketchup my idea if so required.

thanks rocketeers
Cen
 
steward
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Cen, a sketchup would be helpful. Sounds like an interesting idea though.
 
pollinator
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Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''
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cen rees : This would be a very busy project for a 1st Build ! Having said that, you could check out the link to ernieanderica.info/shop where they have plans for a 8''
Build over an existing wood floor with Bricks ( or brick sized pavers) and large pavers as a base, this is a proven design and should meet your future Builds ! Hope
This helps !

For the Future good of the Crarts ! Be safe, keep warm ! As always, your comments and questions are solicited, and welcome ! PYRO - LOGICAL Big AL !
 
cen rees
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will sketchup when im back on my own computer and not this steam driven device im currently using whilst renovating.
i'll defo check out the threads, the shop - excellent info - many thanks.
and regardless - do you think it an alternative to extra insulating against a wood floor with more mass/weight, if constructed correctly ofcourse??
cheers ma dears

 
allen lumley
pollinator
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Cen rees : There are 2 Conditions of wood failure that reduce the integrity of wooden members that result in a loss of mass, structural strength, and increased fire
danger, especially in 'Hidden locations' with poor air circulation, like inside walls, and under floor boards, especially in crawl-spaces !

1 ) -Sometimes called low temperature pyrolysis, This most often occurs to floor joists and rafters too close to Un-insulated, high temperature exhaust stream heated
stove pipe ! Slowly the wood out-gases, Usually never reaching a high enough concentration of flammable gasses to allow Combustion, the Lower Explosive Limit, or
L.E.L.. Eventually the wood has outgassed enough volatiles to render the remaining wood to a state very similar to deeply Charred wood. Most of its structural integrity
Is lost ,and the wooden member is now as flammable as an equivalent sized and shaped piece of Charcoal ! Often this can take decades, but it is frequently observed
to 'be a work in progress' in older homes !

2 )- So called dry rot, sometimes combined with insect damage, resulting in a tinder-dry condition with little structural strength and increased fire danger !

More mass,or even layers of insulative batting material is not as protective of your houses environmental envelope as a properly placed Radiant Heat Barrier and the
use of air Gap(s) ! Properly constructed, you are also improving the safe convection of air through the channels you have created between the wooden floor/walls and
the bottoms of your elevated pavers !

Again, these gaps and the protection they add promote your structural integrity and felicitate long term, whole house longevity !

For the Future/Good of the Craft ! Be safe, keep warm ! As always, your comments, and questions are solicited an are Welcome ! PYRO - LOGICALLY Big AL !

 
cen rees
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cheers Big Al - excellent stuff - many thanks
Cen
 
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