What is the purpose of baffles in closed feedwater heaters?

Baffles in closed feedwater heaters serve a crucial role by directing water through the various passes of the heater. This design enhances the efficiency of heat exchange by ensuring that the feedwater flows in a controlled pattern, allowing for maximum contact with the heating surfaces. As the water moves through the baffles, it is exposed to the steam that has been introduced into the heater, thereby improving the overall heat transfer process.

The arrangement of baffles not only optimizes the flow path, but it also helps in maintaining proper residence time for the water, which ensures adequate heating before it exits the heater. This efficient routing is vital in ensuring that the feedwater reaches the desired temperature and pressure before being sent to the boiler, ultimately contributing to the overall efficiency and safety of the steam generation system.