What aspect of boiler operation is directly impacted by fuel oil viscosity?

Fuel oil viscosity is a critical factor in boiler operation because it significantly affects the combustion efficiency of the fuel being used. Viscosity refers to the thickness or resistance to flow of a fluid, and in the context of fuel oil, it determines how easily the oil can be pumped and atomized during combustion.

When the viscosity of the fuel oil is too high, it can lead to poor atomization, which means that the fuel particles are not broken into small enough droplets to mix efficiently with air. This inefficiency disrupts the combustion process, leading to incomplete burning of the fuel. Incomplete combustion can result in lower energy output, increased fuel consumption, and the production of unburned hydrocarbons and soot.

On the other hand, if the viscosity is optimized, it enhances the atomization, allowing for better mixing with air, which improves combustion efficiency. This results in a more complete and efficient burn, maximizing the energy generated by the fuel and minimizing waste. Therefore, the direct relationship between fuel oil viscosity and combustion efficiency is a fundamental aspect of boiler operation that can impact overall performance and emissions control.