[Stoves] LPG import in India

[Andrew Heggie]

On 28 December 2017 at 23:41, Crispin Pemberton-Pigott
<crispinpigott at outlook.com> wrote:
> The odd thing about the 'Nigerian' source is that the EU requires that not only does it have to be from a sustainable source, it has to be produced using a method that yields 35% of the dry mass input.
>
> As the stoves that I have heard about don't come close to that, it would perhaps be wise to start creating an argument holding that if a certain percentage of the initial energy was used for some useful (fuel displacing) task during the creating of the ‎charcoal, it counts towards the 35% mass yield. I suggest arguing for delivered energy for the task, worked backwards to a % of mass yield based on the efficiency and 29.5 MJ/kg.

What wood  can yield 35% of its dry weight as charcoal with a
calorific value of 29.5MJ/kg?

As far as I know you need a pyrolysis temperature of over 450C to get
the char with that calorific value and that decreases yield below 35%.

Andrew