In this article we will discuss about the measurement of exhaust gas constituents by two methods: 1. Conventional Method and 2. Modern Methods. The exhaust gas analysis is performed to determine the constituents of various components of gases in the exhaust gas. The analysis is important for determining the air fuel ratio, excess air, combustion products and unburnt components. There [...]
The following article will guide you about: How much Air is Required for Complete Combustion? Stoichiometric Air-Fuel Ratio: The stoichiometric air-fuel ratio can be defined as ratio of amount air required for complete combustion of 1 kg of fuel. It is also called as chemically correct air-fuel ratio. If the combustion is complete then and then only maximum heat is [...]
In this article we will discuss about how to Calculate calorific value of fuels. Meaning of Calorific Value: The calorific value of a fuel is amount of heat liberated by its complete combustion. For solid and liquid fuels, calorific value is expressed in kJ/kg, whereas for gaseous fuels it is expressed as kJ/m3 where m3 is normal cubic metre measured [...]
In this article we will discuss about:- 1. Introduction to Fuel 2. Chemical Equations (Combustion Equations) Involved in Combustion 3. Excess Air Supply for Combustion 4. Mass Fraction and Mole Fraction of Constituents. Introduction to Fuel: The fuel is a material which when once raised to its ignition temperature continues to burn if sufficient oxygen or air is available. The [...]
In this article we will discuss about:- 1. Introduction of Chemistry of Combustion 2. Enthalpy of Formation 3. Enthalpy and Internal Energy of Reaction 4. Adiabatic Flame Temperature 5. Free Energy and Chemical Equilibrium 6. Equilibrium Constant for a Reaction. Contents: Introduction of Chemistry of Combustion Enthalpy of Formation Enthalpy and Internal Energy of Reaction Adiabatic Flame Temperature Free Energy [...]
When the combustion of the fuel takes place, the products of combustion will be carbon dioxide, (sometimes carbon monoxide may also be present) sulphur dioxide, vapour and nitrogen all the while, oxygen also will be present in the flue gases. Generally, the composition of solid or liquid fuels is expressed by weight, whereas that of the gaseous fuels is expressed [...]