Fluid Distribution in Shell and Tube Heat Exchangers

Fluid distribution is an important factor in the performance of heat exchangers. Common types of fluid distribution include uniform and non-uniform. Uniform distribution ensures that the fluid flows evenly within each tube and contributes to the efficiency of the heat exchange. Typically, uniform distribution is achieved by designing fluid distributors or flow regulators. Non-uniform distribution can result in certain areas being too hot or too cold, which can affect overall efficiency. The use of diverters or redistribution techniques can improve fluid distribution and ensure uniform fluid flow throughout the heat exchanger.

What are the material selection considerations for shell and tube heat exchangers?

Material selection is critical to the performance and durability of shell and tube heat exchangers. Firstly, the material must have good heat transfer properties to ensure effective heat exchange. Secondly, corrosion resistance is an important consideration, especially when dealing with corrosive fluids such as acids or brines. Commonly used materials include stainless steel, carbon steel, copper alloys and titanium alloys. Each material has its specific areas of application and limitations. In addition, the mechanical strength, cost and workability of the material need to be considered.