What component is placed inside an appliance to change direction, extend the path, or slow the flow of air, air-fuel mixtures, or flue gases?

What component is placed inside an appliance to change direction, extend the path, or slow the flow of air, air-fuel mixtures, or flue gases?

• A. Duct Damper
• B. Plenum
• C. Baffle
• D. Deflector

Answer: (C)

A baffle is a plate or barrier placed inside an appliance to redirect flow, lengthen the path the air or gases must travel, and slow their velocity. This helps improve mixing, heat transfer, and residence time within the system. A duct damper mainly adjusts how much air can pass, not the direction or path length. A plenum is a chamber for distributing flow, not a directional change or flow retardation. A deflector redirects flow with a surface but doesn’t typically create as long a path or slow it as a baffle does.

A baffle is a plate or barrier placed inside an appliance to redirect flow, lengthen the path the air or gases must travel, and slow their velocity. This helps improve mixing, heat transfer, and residence time within the system. A duct damper mainly adjusts how much air can pass, not the direction or path length. A plenum is a chamber for distributing flow, not a directional change or flow retardation. A deflector redirects flow with a surface but doesn’t typically create as long a path or slow it as a baffle does.