1. Determine the design requirements


2. Select the type of heat exchanger

3. Calculate the heat load

4. Preliminary determination of the heat exchange area

5. Select the fluid flow path

6. Calculate the heat transfer coefficient

7. Calculate pressure drop

8. Structural design


9. Strength calculation
Perform strength calculations on the main pressure-bearing components of the heat exchanger to ensure that they can withstand the working pressure and temperature.
10. Material selection

11. Manufacturing process design

12. Optimize design

13. Draw design drawings