Archive for Downsizer For an ethical approach to consumption
 


       Downsizer Forum Index -> Energy Efficiency and Construction/Major Projects
Hairyloon

High temperature insulation.

What's a good insulation to use for high temperature applications?
Mistress Rose

Firebricks, fibreglass, or other inorganic material. How high a temperature are you talking about?
Hairyloon

I think firebricks are more of a thermal mass than insulation, plus they are fairly difficult to bend to shape.
How hot can you go with fibreglass? I suppose there is no reason why it can't go up to something near the meltin point of glass, which ought to be hot enough for most things.
vegplot

Why not provide greater detail of what you're after want rather drip feeding information?
mousjoos

Why not provide greater detail of what you're after want rather drip feeding information?


it builds suspense....I'm on the edge of my seat !
Hairyloon

Why not provide greater detail of what you're after want rather drip feeding information?


it builds suspense....I'm on the edge of my seat !
See: engage the audience. Wink

I have already mentioned pyrolytic decomposition in another thread, but there are other projects.
Besides, without close direction, the discussion may take an interesting turn...
NorthernMonkeyGirl

Without knowing what you are insulating, I can only suggest asking a local crematorium what they use for heatproofing... Woo

Fibre glass.
I wouldn't trust the extruded stuff. we had a fire in the genie house which we had insulated with the sheets of kingspan type stuff for sound proofing and it was a sticky mess! the wiring held out longer!
dpack

assuming keep the heat in rather than make the outside cool

fibre glass up to about 650 c,rockwool a little higher maybe 700c

above that you would be best off with a refractory lining and lots of heat as a lot of metals will start to soften ,react too much,degrade or just melt above that sort of temp

with a pyrolosis unit i would think either glass or rock would do

rockwool is less itchy and probably less damaging to lungs ,whichever if you are shaking and rolling so to speak rubber gloves and a dust mask are sensible
Hairyloon

Fibreglass also has the advantage that I have some left over from the loft. Wink gz

HTI (high temperature insulation) bricks, made from China clay plus other stuff, used to build kilns....my kiln is made from these and I fired it regularly to1300 C I should say that the hot face of them could have been going to 1400plus.....yoou get different grades,next down you don't take over 1240 C

You can build kilns from ceramic fibre blanket, but it does get brittle after a few firings = dust =danger

All depends what you're doing to what temperature.
Hairyloon

A friend was talking to me about kilns recently. I'd mostly decided they would be fairly tricky to build... You may have just changed my mind. Wink Mistress Rose

If you have enough mass, you won't need to insulate a pyrolytic decomposition burner too much. Our charcoal kiln is just a ring of steel, and we managed to get small amounts of wood tar out of a contraption built out of scrap iron and steel, including part of an old saw by the looks of things. Cooling the distillate will be the most important thing while checking the temperature so that the different fractions can be separated.
       Downsizer Forum Index -> Energy Efficiency and Construction/Major Projects
Page 1 of 1
Home Home Home Home Home