What happens during the change of direction in the separation process of an impingement style oil separator?

The change of direction in the separation process of an impingement style oil separator is specifically designed to enhance the efficiency of separating oil from the refrigerant mixture. When the flow direction changes, it creates a specific environment where larger particles, such as oil droplets, are encouraged to collide and coalesce, leading to their eventual separation from the gas phase.

As the flow changes direction, the inertia of the larger oil droplets causes them to move outward, distancing themselves from the exhaust gas stream. This effect results in a greater opportunity for these larger particles to settle out of the airstream and collect in the separator. Thus, this process is crucial for effective oil removal, ensuring better performance of the refrigeration system.

In this context, the other options do not accurately reflect the primary function of the direction change in the separation process. While increasing flow speed, reducing liquid amounts, or promoting faster cooling might be relevant in other processes, they do not capture the fundamental purpose of enhancing particle separation in an impingement style oil separator.