Which factor does NOT affect the efficiency of the centrifugal blast wheels?

The efficiency of centrifugal blast wheels is significantly influenced by several factors, including how the abrasive is handled, the size of the abrasive particles, and the velocity at which the abrasive is projected.

When considering the choices, the type of dust collector does not directly impact the performance of the centrifugal blast wheel in terms of how effectively the abrasive is propelled or the overall functionality of the wheel itself. While a dust collector is important for maintaining a clean work environment and ensuring that airborne contaminants are managed, it does not influence the mechanical aspects of how the centrifugal blast wheel operates.

In contrast, abrasive handling conditions affect the feed and performance of the wheel. The size of the abrasive is crucial because it determines the amount of energy needed for propulsion, as well as the impact on the surface being treated. The velocity of the abrasive is also critical, as it influences the effectiveness of the surface preparation or cleaning process, maximizing the performance of the blast wheel.

Thus, understanding the mechanical and operational characteristics of the centrifugal blast wheels gives insight into why the type of dust collector is not a factor that affects their efficiency directly.