We will buy fuel wood briquettes, pellets from the manufacturer of 20 tons.
Technical characteristics of wood briquettes
RUF:
Size 150*100*60 mm
Humidity ~ 4-9%
Weight ~ 0.833 kg.
Density ~ 0.95-1 g/cm3
(//tractor-service.com)
Calorific value:
wood briquettes 4200-4600 kcal/kg;
coal 3900-4900 kcal/kg;
firewood 1500-2600 kcal.
Ash content:
wood briquette up to 3% ash;