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What is fuel and What are its Types ?

FUELS : 

Fuel is a substance from which heat energy is produced by sufficient quantity of air while burning. 

TYPES OF FUELS :

 Fuels are mainly classified into following types,

1. Solid Fuels.

2. Liquid Fuels.

3. Gaseous Fuels.

I) SOLID FUELS :

Wood, peat and coal, sugarcane crushing, municipal waste etc., are solid fuel . When the fuel burns, fixed carbon , hydrogen , Sulphur , oxygen , and nitrogen will release. These constituents are determined by either proximate or ultimate analysis.


II) LIQUID FUELS :

Generally, carbon and hydrogen are the basic combustible constituents in all liquid fuels. Mainly, Liquid fuels are obtained from petroleum which is a mixture of various hydrocarbons such as paraffin's , olefins , naphthene , and aromatics. These liquid fuels are mainly used in power generation. 


Advantages :

1. It has higher calorific value. 

2. It requires lesser space in use. 

3. It keeps cleanliness surroundings.

4. It eliminates wear and tear of grate.

5. It is easy to control of  combustion.\

6. It is easy to handle and supply.


III) GASEOUS FUELS :

The most widely useable fuel in engineering applications is gaseous fuel such as natural gas, coal gas, town gas, blast furnace gas, and producer gas. 

The gaseous fuels can be easily combusted and complete combustion is possible while burning.

Advantages :

1. The produced gas can be easily transported to the required plant.

2. Immediate or Instant control of combustion is possible. 

3. There is no difficulty of smoke and ash disposal.

4. Low grade solid fuels can be used after producing gas from it by gasification.

5. There is no pollution of air while exhausting the burnt gases. 

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