Numerical simulation research on larger industrial heat exchanger

The advantages and disadvantages of numerical simulation models for shell-and-tube heat exchanger were compared, and the experiments for small-sized shell-and-tube heat exchanger are carried out. The calculational results of whole entity model were compared with the experimental results, and the calculational results of periodic whole section model were compared with the periodic sections of the whole entity model, and the validity of the periodic whole section model was verified. The numerical simulation of the large-scale heat exchanger are carried out using the periodic whole section model, and the calculational results show that when the baffle pitch and flow rate increase twice, the temperature difference, the average heat transfer coefficient and the pressure drop are all increased, and the errors of the temperature difference, the average heat transfer coefficient are within 5%, and the error of the pressure drop is 10.75%.