Mechanical Engineering - Thermodynamics - Discussion

The correct answer is Coal gas.

Coal gas, also known as town gas, has the highest calorific value among the options, with a calorific value of approximately 20-22 megajoules per cubic meter (MJ/m³).

Here's a rough ranking of the calorific values of the options:

1. Coal gas: 20-22 MJ/m³
2. Mond gas: 18-20 MJ/m³
3. Producer gas: 5-7 MJ/m³
4. Blast furnace gas: 2-4 MJ/m³

Calorific value is a measure of the energy content of a fuel, and it's an important factor in determining the fuel's usefulness for heating, power generation, and other applications.

Note that the exact calorific values can vary depending on the specific composition and production methods of the gases.

Coal gas is a mixture of hydrogen, methane, and carbon monoxide, produced by the gasification of coal. It has a high calorific value due to its high methane content.

Mond gas is a mixture of carbon monoxide and nitrogen, produced by the reaction of coal with ammonia. It has a lower calorific value than coal gas.

Producer gas is a mixture of carbon monoxide, hydrogen, and nitrogen, produced by the gasification of coal or biomass. It has a lower calorific value than coal gas and Mond gas.

Blast furnace gas is a byproduct of steel production, consisting mainly of carbon monoxide, carbon dioxide, and nitrogen. It has the lowest calorific value among the options.

It is also known as a Town gas.

Its calorific value of about 5000 to 6700kj/m cube.

Coal gas- 34MJ/m^3.
Producer gas- 6MJ/m^3.
Mond gas- 5MJ/m^3.
Blast furnace gas- 3.5MJ/m^3.

Mond gas is a type of coal which is used is used for heating purpose.

Mond gas is a cheap coal gas that was used for industrial heating purposes.

Coal gases are made by decomposing coal through heating it to a high temperature is called Mond gas.

What is mond gas, producer gas?