[Stoves] Metals in biofuels
pverhaart at iprimus.com.au
Wed Jan 28 18:27:29 CST 2009
Are there any figures available for coconut shells? I would expect a
very low ash content.
What is a MMBtu? Mean Mega British thermal unit?
Way back at an introductory physics lecture, the professor, explaining
units, praised the unit of time, the second. "Even the British use it",
Peter (strictly SI) Verhaart
Tom Miles wrote:
> You can get slag in the firepot of a pellet stove which is only about 4-6 in
> (100-150 mm) diameter and about 4-6 inches deep. A good high temperature in
> the GEK will slag walnut shells. We measured concentrations of alkali,
> primarily potassium, of 0.71-1.065 lb/MMBtu in walnut hulls and blows.
> (Alkali Report Appendix C.8 Nut, Pits and Shells) Because the amount of ash
> is small it takes time to accumulate it. Almond hulls are worse at 4
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