Fuels and Combustion Quiz

Questions and Answers

Explain the process of carbonization and the manufacture of metallurgical coke using the Otto Hoffmann method.

Carbonization is the process of heating coal in the absence of air to produce coke. The Otto Hoffmann method involves heating coal in a series of closed chambers to produce metallurgical coke.

What is the Bergius process and how is it used in the manufacture of synthetic petrol?

The Bergius process is a method of producing synthetic petrol from coal by hydrogenating it under high pressure in the presence of a catalyst.

Define the terms 'knocking', 'octane number', and 'diesel oil'.

'Knocking' refers to the uncontrolled detonation of fuel in the engine. 'Octane number' is a measure of a fuel's resistance to knocking. 'Diesel oil' is a type of fuel used in diesel engines.

Explain the concept of 'calorific value' and differentiate between higher and lower calorific values.

<p>'Calorific value' is the amount of heat energy produced by the complete combustion of a fuel. Higher calorific value includes the latent heat of vaporization of water, while lower calorific value does not.</p> Signup and view all the answers

What is the ORSAT method used for in the context of flue gas analysis?

<p>The ORSAT method is used to analyze the composition of flue gases, specifically to determine the percentage of carbon dioxide, oxygen, and nitrogen present in the gases.</p> Signup and view all the answers