Design and optimization of shell and tube heat exchangers used in food industry by using computational fluid dynamics method

In this study, three dimensional design have been made with reference to a shell and tube heat exchanger model used in food industry. The operational performance data of the existing heat exchanger model were obtain ed and improvement were carried out by changing the arrangement of the tube configurations, the design of the baffles and its placement. In addition, original baffle designs and their optimization for shell and tube heat exchanger has been made. Design studies were made in SolidWorks 2018, a feature based design program. Thermal and hydraulic performance analyses of the developed designs with CFD technique were performed in the Flow Simulation module of the same program. A total of 23 computational fluid d ynamics analyses were performed. Static, displacement, combined force and stress analysis were performed in the Simulation Module of SolidWorks 2018 program to determine the reproducibility of unique baffles. In order to determine the most efficient hydraulically and thermally arranged tube arrangement, designs were made according to perforation, circular, pentagonal and full frame tube arrangement. It was determined that the most efficient thermal and hydraulic sequence was perforation type. Different baffles and configurations were experienced, and the most efficient models were found to be the models using five baffles. The standard baffle and three different unique baffles were analyzed using a perforation sequence. According to the results of the baffle analysis, the most efficient model P R 60 2/3 which contains unique baffles, which is 11.44% thermally and 35.1% hydraulically more efficient than the PS 2/3. model which contains the standard baffles. According to the results obtained, P R 60 2/3 model with unique baffle design, 22.63% thermally and hydraulically 0.27% efficiency increase compared to the reference heat exchanger model P 0, it was found that the yield increase. The unique baffles are superior to the stan dard baffles when evaluated according to thermal and hydraulic criteria. When the reproducibility analysis was evaluated, it was determined that the AISI316 material, which can be shaped and produced with a press that provides 800kg printing power, is resistant to this force.