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The calorific value of naphthalene is approximately 25,800 kJ/kg. It is often used as a standard for measuring the energy content of other substances.
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.
The calorific value of water hyacinth is approximately 17-19 MJ/kg.
The gross heating value of naphthalene is approximately 25.1 MJ/kg. This value represents the amount of heat released when a unit mass of naphthalene is completely burned in an oxygen-rich environment.
The calorific value of wood can vary depending on the type of wood and its moisture content. On average, hardwoods like oak or maple have a calorific value of around 24-27 million joules per cubic meter, while softwoods like pine or spruce have a lower calorific value of around 18-20 million joules per cubic meter.
The calorific value of a fuel is a measure of the amount of heat energy released when it is burned. The calorific value of solid, liquid, and gas fuels can be determined using calorimetry, where the fuel is burned in a controlled environment and the heat released is measured. This heat measurement can then be used to calculate the calorific value of the fuel.