Power coal refers to coal used as power raw material. Generally, it refers to coal used for thermal power generation in a narrow sense. In a broad sense, all the coal used to generate power for the purpose of power generation, locomotive propulsion, boiler combustion, etc. belong to power coal, referred to as power coal. 55 kcal is the calorific value of thermal coal, 55 kcal/kg.

The requirements for calorific value, volatile matter and ash content of power coal are not as high as those of chemical coal (such as coking coal for steelmaking). However, considering the economic benefits of power technology, power coal should also have certain quality requirements.

Extended data:

A term commonly used in the coal industry to indicate the calorific value of coal.

for example, 7, kcal of coal means that the calorific value of the coal is 7, kcal/kg, which is equivalent to that in engineering.

thermal unit. 1 kcal =1 kcal, which is mostly used in nutrition measurement and fitness manuals.

for example, when the temperature of 1kg pure water is increased or decreased by 1 degree Celsius, the heat absorbed or released is 1kcal. A kcal is a kcal (formally, it should be kcal). Used to evaluate the quality of fuel, one kilogram of fuel can raise X kilograms of water by 1 degree Celsius, that is, the calorific value of this fuel is X calories.

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