Coal
hydrogen calorific value is 150000 kJ/kg
Hydrogen
Hydrogen has the highest calorific value, which should make it good fuel
hydrogen
Carbohydrates
The high heating value of rubber (8600 kcal / kg) is used to generate heat energy
Anthracite has the highest calorific value. and South African coal is best in the world.
You can convert gross calorific value (GCV) to net calorific value (NCV) by subtracting the latent heat of vaporization of water formed during combustion from GCV. The equation for this is NCV = GCV - 2.5 x (9 x % H2 - % O2), where % H2 is the percentage of hydrogen in the fuel and % O2 is the percentage of oxygen in the fuel.
Dung cakes. Its has a calorific value of 7 kilojoule.
Pure fat, such as oils and butter, has the highest calorific value at 9 calories per gram. This is more than double the calories per gram of carbohydrates and proteins, which each provide 4 calories per gram.
Among common solid fuels, peat generally has the lowest calorific value, typically ranging from 3,000 to 5,000 kcal/kg. In contrast, anthracite coal boasts the highest calorific value, often exceeding 7,000 kcal/kg. Thus, peat is the least energy-dense, while anthracite is the most.
15-17 calorific value