Plant Operation Practice Test

What is the process of breaking up fuel into small particles for combustion called?

1. Atomization

2. Vaporization

3. Ignition

4. Combustion

The correct answer is: Atomization

The process of breaking up fuel into small particles for combustion is called atomization. This process is critical in the operation of combustion engines and burners, as it increases the surface area of the fuel, which enhances the mixing of fuel with air. A better fuel-air mixture leads to more efficient combustion, allowing for a more effective release of energy. Atomization typically involves transforming liquid fuel into a fine mist or spray, which ensures that the fuel can more readily ignite and burn. The efficiency of this process directly affects the performance of the combustion system, influencing factors such as emissions and overall energy output. In contrast, vaporization refers to the process of changing a liquid into a vapor, which is a different phase transition. Ignition is the moment when the fuel-air mixture starts to burn, and combustion is the actual burning process itself. Therefore, atomization specifically addresses the preliminary step crucial for effective combustion, making it the correct choice for this question.