Help: How to design a box-type shell and tube heat exchanger?

The design of a box-type shell and tube heat exchanger can be carried out according to the following steps: 1. Determine the heat transfer rate and fluid flow rate. 2. Select appropriate tube materials, tube diameters, and shell materials based on the operating conditions of the heat exchanger. 3. Calculate the heat transfer coefficient of the tube side: Based on factors such as geometric dimensions, physical properties, and flow regime, appropriate calculation formulas are used to determine the thermal conductivity of the fluid flowing inside the tube relative to the wall surface, as well as the convective heat transfer coefficient of the wall surface; subsequently, the overall heat transfer coefficient of the tube side is calculated using these formulas. 4. Calculate the heat transfer coefficient of the shell side: Based on factors such as the flow pattern in the shell side, fluid properties, and flow velocity, appropriate calculation formulas are used to determine the overall heat transfer coefficient of the shell side. The overall heat transfer coefficient of the shell side includes the convective heat transfer of the fluid in the shell side and the conductive heat transfer through the wall. 5. Calculate the pressure drops in the shell side and tube side: Using appropriate calculation formulas based on factors such as flow rate, fluid properties, tube diameter, and shell diameter, the pressure drops in these two sides are determined to ensure that they remain within the specified operating range. 6. Conduct a comprehensive analysis based on the above calculation results to determine the specific design parameters. Note: During the actual design process, it is necessary to take into account factors such as the operating environment of the heat exchanger and its maintenance requirements, in order to ensure that the design is safe, reliable, and economically sound. .