noun
heat of combustion
Technical term in chemistry; the amount of heat released when a substance undergoes complete combustion.
メタンの燃焼熱は約890 kJ/molです。
The heat of combustion of methane is about 890 kJ/mol.
発熱量 is a broader term for calorific value or heat output, often used in engineering and nutrition, while 燃焼熱 specifically refers to the heat released by combustion.
Compound of 燃焼 (combustion) and 熱 (heat).