Frequent question: What is the calorific value of coal in kJ kg?

What is the calorific value of coal in KG?

Coal is very shiny, repels moisture, calorific value 7,800 – 8,000 kcal/kg, no coking properties. Most coal is used for the energy content contained within the volatile matter and the fixed carbon.

What is the calorific value of coal in kilo joule per gram?

3.16. 3 Fossil Fuel Use for Thermal Energy Production

Type of fuel Net calorific value (kJ/kg) Default carbon content (kg/GJ)
Other petroleum products 40,200 20.0
Anthracite coal 26,700 26.8
Coking coal 26,200 25.8
Hydrogen gas 143,000

What is the calorific value of coal gas?

The calorific value of a fuel is the quantity of heat produced by its combustion – at constant pressure and under “normal” (standard) conditions (i.e. to 0oC and under a pressure of 1,013 mbar).

Fuel Calorific Values.

Natural gas 12500 kcal/kg
Brown coal 3500 kcal/kg
Woods 2500 kcal/kg
Electricity 860 kcal/kWh

What is net calorific value of coal?

The calorific value of coal represents gross calorific value (HG), which contains the latent heat of water vaporization. When the latent heat of water vaporization is not included, the calorific value is called net calorific value (HN).

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What is CV coal?

The calorific value of coal is measured for almost all coal samples. It is a measure of the heating ability of a coal and is needed to estimate the amount of coal needed to produce a desired amount of heat.

What are the two types of calorific value?

Gross calorific value (GCV) and net calorific value (NCV) are the terms used in the formula to calculate calorific value of fuel.

How is calorific value calculated?

Procedure to Calculate Calorific Value

Net Calorific Value (NCV) means lower heating value (LHV) i.e. lower calorific value (LCV) is determined by the subtraction of heat of vaporization of the water vapour from the higher heating value. … Latent heat corresponding to the partial pressure of water vapour in Kcal/kg.

Why is coal gas poisonous?

Poisoning from natural gas appliances is only due to incomplete combustion, which creates CO, and flue leaks to living accommodation.

Why coal gas is not used for cooking?

As coal is also a fossil fuel, it is produced in nature from the dead & decayed remains of plants and animals after millions of years of processes. So we cannot use them on a regular basis as a cooking fuel to check their depletion.