Question papers

Universities

Institutes

Placement Tests

Entrance Tests

Competitive Tests

Software

 
 
 
 
Fuels:
 
 

A fuel is a substance which gives heat energy on combustion. A fuel contains carbon and hydrogen as main combustible elements.

Calorific value of fuel: The amount of heat liberated in Kilocalorie or Kilojoules by the complete combustion of 1 Kg of fuel.

Fuels can be divided into three main categories

1.      Solid fuels

2.      Liquid fuels

3.      Gaseous fuels

Solid fuels: Solid fuels left some ash or residue after combustion. The solid fuels and their calorific values are given below.

Fuel

Calorific Value (Kcal/kg)

Wood

2500

Peat

3500

Lignite Coal

3000

Bituminous Coal

7500

Anthracite

8500

Liquid fuels: Most of the liquid fuels in use are the hydrocarbons which exist in the liquid phase at room temperature. The liquid fuels and their calorific values are given below.

Fuel

Calorific Value (Kcal/kg)

Gasoline

11,200

Paraffins

11,100

Diesel

11,000

Fuel oil

10,500

Gaseous fuels: Some of the gaseous fuels exist naturally at room temperature and some are made by the treatment of coal. The gaseous fuels and their calorific values are given below.

Fuel

Calorific Value (Kcal/kg)

Coal gas

7630

Coke oven gas

5100

Producer gas

1200

Blast furnace gas

970

 
   

 

allsubjects4you.com. All Rights Reserved