Development and Verification of Simulation Model for Fast Calculation of Finned Tube Heat Exchanger
Finned tube heat exchangers have the characteristics of large heat transfer surface area and high efficiency. Optimizing the design of a finned tube heat exchanger from thousands of structural products to meet requirements requires a fast and accurate heat exchanger simulation model. A simplified three-dimensional distribution parameter model is developed,based on the control unit division method of each row of loops,a simplified description method based on the combination of loop proportion and tube length of each row is proposed,and a rapid solution algorithm for alternate iterations of heat transfer-pressure drop under unknown flow rate is proposed. A simulation selection and design platform are established. The validation of the model by experimental data shows the errors of heat transfer and pressure drop for 2-12 rows of heat exchangers with different fin structures are all within 10％,and the single simulation calculation time is less than 0.05 s,and the multi-degree of freedom selection time is less than 5 s,which improves the calculation and selection speed.
万方数据
维普
