What is the calorific value of coal in kJ kg?

Fuel Density Higher Heating Value (HHV) (Gross Calorific Value – GCV)
@0°C/32°F, 1 bar
Turpentine 0.865 12.22
Solid fuels* [kWh/kg]
Anthracite coal 9.06

When calorific value of coal is high?

Hard coal category includes coal types that have calorific value more than 5,700 kcal/kg. Other bituminous coal, anthracite and coking coal are considered as hard coal.

What is the heat value of coal?

23.9 MJ/kg Heat Values of Various Fuels

Heat value
Natural gas 42-55 MJ/kg
Hard black coal (IEA definition) >23.9 MJ/kg
Hard black coal (Australia & Canada) c. 25 MJ/kg
Sub-bituminous coal (IEA definition) 17.4-23.9 MJ/kg

What is Indian coal calorific value?

between 3345 kcal to 4703 kcal. The calorific values of the coals vary between 3345 kcal to 4703 kcal.

Which gas has highest calorific value?

hydrogen Calorific value is nothing but the energy contained in a fuel or food, determined by measuring the heat produced by the complete combustion of a specified quantity of it. This is now usually expressed in joules per kilogram. Hence, hydrogen has the highest calorific value.

What is calorific value of diesel?

roughly 45.5 MJ/kg The calorific value of diesel fuel is roughly 45.5 MJ/kg (megajoules per kilogram), slightly lower than petrol which is 45.8 MJ/kg. However, diesel fuel is denser than petrol and contains about 15% more energy by volume (roughly 36.9 MJ/litre compared to 33.7 MJ/litre).

Which coal has highest ash content?

Coking coal- the carbon content is around 43%-86%. It is a type of bituminous coal. Hence, lignite has the least carbon content which means that it has the highest ash content.

Which coal is best calorific value?

Anthracite, also called hard coal, the most highly metamorphosed form of coal. It contains more fixed carbon than any other form of coal and the least amount of volatile matter and it has calorific values near 35 mega joules per kilogram.

What is calorific value Class 11?

Hint: Calorific value may refer to the amount of heat generated after the complete combustion of a unit volume of a substance. … The amount of heat energy generated on complete combustion of 1 kg of a fuel is known as its calorific value.

How much is a ton of coal?

In 2019, the national average sales price of bituminous, subbituminous, and lignite coal at coal mines was $30.93 per short ton, and the average delivered coal price to the electric power sector was $38.53 per short ton.

What is a ton of coal?

1 Ton = 1,000 Kilograms. Coal Price Per 1 Kilogram.

What are the 4 grades of coal?

Coal is classified into four main types, or ranks: anthracite, bituminous, subbituminous, and lignite. The ranking depends on the types and amounts of carbon the coal contains and on the amount of heat energy the coal can produce.

Which grade of coal is best?

Anthracite Anthracite: The highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter. Bituminous: Bituminous coal is a middle rank coal between subbituminous and anthracite.

What is G grade coal?

Exceeding 3100 and not exceeding 3400. G-14. Exceeding 2800 and not exceeding 3100. G-15. Exceeding 2500 and not exceeding 2800.

What is grade coal?

Based on maceral content and its appearance in a hand specimen, coal is classified into four principal types: clarain, durain, fusain, and vitrain. Coal may also be classified in grades using subjective terms (e.g., “low-sulfur coal,” “high-ash coal”) with reference to their impurities for commercial purposes.

Which Wood has highest calorific value?

Typical calorific values of fuels

Fuel Net CV by mass Energy density by volume
Wood chips (30% MC) 12.5 3,100
Log wood (stacked – air dry: 20% MC) 14.7 5,200-7,400
Wood (solid – oven dry) 19 7,600-11,400
Wood pellets (10% MC) 17 11,000

Which gas has lowest calorific value?

Calorific value refers to the amount of heat produced when 1 gram of a fuel undergoes complete combustion with oxygen. Its SI unit is kJ/kg. Wood has the lowest (17kJ/g) and kerosene has the highest (48kJ/g) calorific value, among the given fuels.

Which has maximum calorific value?

Ethanol and fats have the highest amount of calorific value per gram i.e. 29 and 37 kilojoules per gram or 6.9 and 8.8kcal/g respectively and proteins and most carbohydrates both have about 17kJ/g or 4kcal/g.

What are the two types of calorific value?

There are two types of calorific value i.e. high calorific value (HCV) or gross calorific value (GCV) which takes into account the latent heat of vaporization of water, which is not included in the low calorific value (LCV) or net calorific value (NCV).

Is a diesel better than petrol?

Diesels deliver more power at lower engine revs than their petrol equivalent. … This also helps to make diesel cars better suited for towing. Better fuel economy. Like for like, diesel cars give you better mpg than petrol ones.

What are different types of calorific value?

Calorific value formula and types of calorific value

What are the 5 main types of coal?

How many types of coal are there?

Does coal ash contain mercury?

Coal ash contains contaminants like mercury, cadmium and arsenic. Without proper management, these contaminants can pollute waterways, ground water, drinking water, and the air.

Does Indian coal has high ash content?

India’s domestic coal reserves have a high ash content—up to 40 to 45 percent. … Used along with the use of electrostatic precipitators, FGDs can address particulate pollution from coal-fired power plants caused in part due to the high ash content.

Which type of coal contains C 92 95?

Anthracite Anthracite is a dark black form of coal and the highest quality coal. It is very hard, has a low moisture content, and a carbon content of nearly 95%. When burned, anthracite can reach a very high temperature.

What is kcal/kg coal?

Coal is very shiny, repels moisture, calorific value 7,800 – 8,000 kcal/kg, no coking properties.

Which is not a type of coal?

Siderite is not a type of coal. Siderite is a mineral composed of iron (II) carbonate (FeCO3). Anthracite, lignite and peat are the different kinds of coal.

What is LCV and HCV?

A LCV is defined in the Motor Vehicles Act as a vehicle with GVW of not more than 6 ton. A HCV is defined as vehicle with GVW of more than 6 ton. Gross vehicle weight is defined as vehicle weight plus rated payload. Rated payload is the maximum weight permitted to be loaded on the vehicle under Motor Vehicle Act.

How is coal GCV calculated?

The best equation has the following form: GCV= 25.284 (M) + 30.572 (Ash) + 62.127 (VM) + 138.117 (FC) – 2890.095. The result is in agree with previous work that equation involving four independent variables i.e. moisture (M), ash, volatile matter (VM) and fixed carbon (FC) provides the most accurate estimation of GCV.

How calorific value is calculated?

Goutel suggested the following formula from calculating the higher calorific value when the percentage proximate analysis of fuel is known. The formula is, cal.value = 343.3 x fixed carbon % + α x % volatile matter kJ/kg. Goutel formula is unreliable for fuels having high percentage in oxygen.