Table2.

Fuel data for Danish cereal straw and wood chips [20]

Chemical composition. Unit: wt% on dry basis	Straw		Wood chips
	Typical	Variation	Typical	Variation
Ash	4.5	2–7	1.0	0.3–6
Volatiles	78	75–81	81	70–85
Hydrogen, H	5.9	5.4–6.4	5.8	5.2–6.1
Carbon, C	47.5	47–48	50	49–52
Nitrogen, N	0.7	0.3–1.5	0.3	0.1–0.7
Sulphur, S	0.15	0.1–0.2	0.05	< 0.1
Chlorine, Cl	0.4	0.1–1.1	0.02	< 0.1
Silicon, Si	0.8	0.1–1.5	0.1	< 1.1
Aluminum, Al	0.005	< 0.03	0.015	< 0.1
Iron, Fe	0.01	< 0.03	0.015	< 0.1
Calcium, Ca	0.4	0.2–0.5	0.2	0.1–0.9
Magnesium, Mg	0.07	0.04–0.13	0.04	< 0.1
Sodium, Na	0.05	< 0.3	0.015	< 0.1
Potassium, K	1.0	0.2–1.9	0.1	0.05–0
Phosphorus, P	0.08	0.03–0.2	0.02	< 0.1