Which factor is NOT affected by the efficiency of combustion?

The efficiency of combustion primarily influences factors directly related to the process of burning fuel. This includes emissions produced, as a more efficient combustion process typically results in fewer unburned hydrocarbons and particulates being released into the atmosphere. Similarly, fuel consumption rates are closely linked to combustion efficiency; if combustion is more efficient, less fuel is needed to produce the same amount of energy.

Operational costs are also affected because improved combustion efficiency can lead to lower fuel costs and reduced maintenance issues, thereby influencing the overall operational budget of a boiler system.

In contrast, water treatment effectiveness is largely dictated by the quality of the water entering the system, the treatment chemicals used, and the specific requirements of the boiler with respect to water quality. While good combustion practices can contribute to overall efficiency and performance of a boiler system, they do not have a direct impact on the effectiveness of water treatment processes. Thus, water treatment effectiveness stands apart from the direct influences of combustion efficiency.