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Gases - Gross and Net Heat Values

Gross heat and net heat values for gases like hydrogen, methane and more.

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Gross heating and net heating values for some common gases can be found in the table below:

Fuel Gas	(kcal/kg)		(kcal/nm³) ¹⁾
Fuel Gas	Gross Heating Values	Net Heating Values	Gross Heating Values	Net Heating Values
Hydrogen	33889	28555	3050	2570
Methane	13284	11946	9530	8570
Ethane	12400	11350	16700	15300
Ethylene	12020	11270	15100	14200
Natural Gas - approximately	12000	11000	9000	8000
Propane	12030	11080	24200	22250
Propylene	11700	10940	22400	20900
n-Butane	11830	10930	31900	29400
Iso-Butane	11810	10900	31700	29200
Butylene-1	11580	10830	29900	27900
Iso-Pentane (liquid)	11600	10730
LPG (average)	11920	10997	28000	25775
Acetylene	11932	11514	13980	13490
Carbon Monoxide	2411	2411	3014	3014

¹⁾ nm³ = normal cubic metre

1 kJ/kg = 1 J/g = 0.4299 Btu/ lb_m = 0.23884 kcal/kg
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