How is the efficiency of a blower defined?

The efficiency of a blower is defined as the work done by the blower divided by the energy used. This definition emphasizes the relationship between the useful work output that the blower performs in moving air and the total energy consumed during this process. Efficiency is a key performance metric in understanding how well the blower is converting electrical energy into useful mechanical work, impacting both operational performance and energy consumption.

By considering this definition, you recognize that a highly efficient blower will produce a significant amount of airflow using relatively little energy, indicating effective design and operation. This aspect is essential in wastewater treatment facilities where blowers are used for aeration processes, as optimizing energy consumption can lead to cost savings and improved environmental outcomes. The other options do not encapsulate the concept of efficiency as directly related to work and energy, thereby highlighting why this specific choice is the most accurate in defining blower efficiency.