[Stoves] Insulation

[Crispin Pemberton-Pigott]

Dear Frans

You always have helpful information!

I have seen foamed glass insulation made from a low quality silica in the
backyard of a guy named Garth Whitworth-Williams-Foxcroft. He was
experimenting with low cost sand as an alternative to the much more
expensive foamed glass one normally finds. He made it using a 2-1/2 story
tower in his back yard. Big long sheets 1.2 metres wide. Amazing stuff you
could cut with a saw and nail with a hammer. 

Garth also invented (among many other things) the air-to-air missile,
photosetting polymers and a zinc-air battery that he use to power his
Bentley in 1950.  

Is there a borosilicate glass foam?? That would be amazing.

Regards
Crispin

++++++

Jeff and stovers

  The best HEAT RESISTANCE you get with ALUMINE Al2O3 bricks 2-6cm thick
Density  4     ; It is used in glas smelting oven
Behind  that the real INSULATION is from porous  MgO bricks density 0,4 

  But you can use GLASSFOAM !!!  Also KAOLINE FOAM

I replaced the 5 cm thick asbest insulation in a 7 KW el.accumulation
heating by GLASSFOAM 5 x30x120 cm it supports 600 Kg at 600 °C ALUMINE
bricks !

You can cut it with any saw like butter . It has 3mm airbubles like a
honeygrate .Walls of 0,3 mm

   Heat reflection ...You make it with 0,3 mm aluminium sheets 60-100 cm at
a distance of 2-5 cm .

Happy experimenting .
Frans