Tube Inserts For Falling Film Heat Exchangers

Here is where the design engineer can be creative. There are many designs and configurations for tube inserts in this application. The purpose of the tube insert is to induce a fluid to “fall” down the ID of the heat exchanger tube. The following, Figures 4 through 6, are representations of the various types of falling film inserts that have been produced over the years. We do not have any recommendations as to the benefits of one design over another.