[Stoves] Cuber and size of densifying machines. (no longer Re: The wood and char and fuel "debate" )

[ajheggie at gmail.com]

[Default] On Thu, 6 Mar 2014 11:02:20 -0800,"Tom Miles"
<tmiles at trmiles.com> wrote:

>You probably mean 0.6 g/cm3 (37 lb/ft3) which is very good that’s better than most commercial wood pellets. For reference the dry density of sawdust is often about .160 g/cm3 (or 10 lb/ft3). The loose density of straw is about 0.08 g/cm3 or (5 lb/ft3). The press roll on a pellet mill exerts about 142 bars (2000 psig). If you can get those densities by selecting materials, wetting, pressing at 12 bar and drying you are doing very well. 

Tom I suspect Richard is measuring the actual density and you are
quoting a bulk density. A wood pellet has an actual density of >1g/cc
as it sinks in water. I think they have more than 40% air spaces in
bulk unless stacked perfectly as aligned cylinders in which case the
air space drops to 30%.

AJH