Design and Numerical Simulation of Heat Exchanger for Flue Gas Recycling in Power Plant

Heat exchanger as an indispensable heat transfer equipment for efficient heat recovery and utilization, and its optimized design has been highly concerned by the majority of researchers. In this study, firstly, according to GB/T 151-2014 heat exchanger and GB 150-2011 pressure vessel and other related standards, Excel was used to program the flue gas heat exchanger, and the theoretical calculation of each part of the flue gas heat exchanger was completed. Secondly, using SolidWorks Simulation for static stress analysis, the maximum stress is 96.07 Mpa, which is less than the permissible stress of 131 Mpa at the design temperature, and the maximum displacement is 0.2034 mm, which is less than one-thousandth of the corresponding design length, which indicates that the design is safe and reliable. Finally, SolidWorks flow Simulation is used to simulate the temperature field, and the maximum temperature of the fluid is 474.11 K. The numerical simulation results are in good agreement with the design conditions. This study provides a theoretical basis for further optimization of heat exchanger design.