What is the purpose of placing baffles between the tubes of a boiler?

The placement of baffles between the tubes of a boiler serves primarily to direct the travel of gases of combustion. Baffles are mechanical structures that help optimize the flow path of the flue gases as they pass through the boiler. By directing the gases in a controlled manner, baffles ensure that the gases spend sufficient time in contact with the heating surfaces of the tubes, which effectively improves the efficiency of heat transfer from the gases to the water or steam in the boiler.

This controlled flow helps to prevent short-circuiting, where gases might take a less efficient route and minimize exposure to the heat exchange surfaces. Consequently, by directing the path of combustion gases around the tubes efficiently, baffles enhance the overall thermal performance of the boiler. Users in the industry rely on this design feature to maximize the energy transfer, thereby improving the boiler's efficiency and effectiveness.