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Calorific value of fuels

 Fuel (energy) 
 Calorific value in kcal/kg 
 Calorific value in kWh 
Lignite - Maritza-west
1673 kcal/kg
1.95 kWh
Briquettes
2390 kcal/kg
2.77 kWh
Wood
2796.3 kcal/kg
3.25 kWh
From Bobovdol
3700.7 kcal/kg
4.30 kWh
Coal from Don River (Russia)
5759.9 kcal/kg
6.70 kWh
Natural gas
8500 kcal/m3
9.89 kWh
Oil
9520 kcal/kg
11.07 kWh
Propane butane (LPG)
11950 kcal/kg
13.90 kWh
Naphtha
10516 kcal/kg
12.23 kWh
Electricity
860 kcal/kWh
1.0 kWh
Wooden pellets
4207 kcal/kg
4,88 kWh

Calorific value data from http://toplofikacia.hit.bg, for pellets from http://www.technowood.bg/site/?q=bg/node/55



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