What is the term for the process of adding water to enhance combustion in a coal-fired boiler?

The process of adding water to enhance combustion in a coal-fired boiler is known as tempering. This term specifically refers to the practice of introducing a controlled amount of water to the combustion process, which helps to optimize the burning of coal. By tempering the coal-fired boiler, operators can improve the efficiency of combustion, reduce emissions, and control the temperature within the boiler system.

In the context of coal combustion, introducing water can help to regulate the burning rate, contributing to a more consistent and complete combustion process. This is especially important in large steam-generating systems where precise control of combustion conditions is essential for safety and efficiency.

Other terms like flushing pertain to cleaning or removing residue from equipment, cooling refers to the process of lowering temperature, and condensing involves changing a substance from a gas to a liquid, which is not directly related to the process of enhancing combustion in a boiler. Therefore, tempering is the most accurate term utilized in this scenario.