1. Mixing the steam and water: The baffles create turbulence in the steam drum, which helps to mix the steam and water. This mixing process increases the efficiency of heat transfer between the steam and water.
2. Preventing water carryover: The baffles help to prevent water from being carried over into the steam line. This is important because water carryover can damage steam turbines and other equipment downstream of the steam drum.
3. Reducing pressure drop: The baffles help to reduce pressure drop in the steam drum. This is important because excessive pressure drop can reduce the efficiency of the steam system.
4. Supporting the internals: The baffles help to support the internal components of the steam drum, such as the tubes and headers. This support is important to prevent damage to the steam drum and its components.
The specific design of the perforated baffles will vary depending on the specific application. However, the general principles of operation remain the same.