What is the correct way to use profiling dampers?
Profiling dampers reduce airflow in zones in the cross direction of the hood. Since the typical CD drying problem is wet streaks in order to use profiling dampers you must have extra capacity in the hood. The typical profiling damper application would require the dampers to be uniformly throttled back and then one or more dampers would be opened in the area of the streak. Fundamentally this scenario requires excess drying capacity in the hood. If you are currently operating at the upper drying limits of the hood profiling dampers would be of little use. One word of caution – profiling dampers can be the source of wet streaks. Because of the adverse environment that they operate within dampers and damper positioning mechanisms can become faulty. Good PM practices around profiling dampers are essential for optimum hood performance. What does optimizing a hood mean? This is a complex process that varies by the machine and depends on your performance objectives. Absolute humidity is a key
