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Background <p>Vibration-induced issues during flow passage significantly impact the performance and lifespan of shell-and-tube heat exchangers. The interaction between baffle configuration, heat transfer, and vibration remains a critical area of study.</p> Objective <p>This research aims to simultaneously analyze heat transfer and vibration characteristics in a shell-and-tube heat exchanger by varying baffle numbers (4, 6, 8) and spacing (18.9, 13.5, 10.5 cm) under two cold water flow rates.</p> Methods <p>Experimental Design: Nine configurations tested, combining baffle numbers and distances.</p> <p>Data Collection: Vibration amplitudes and natural frequencies recorded via accelerometer sensors; temperatures monitored at inlets/outlets.</p> <p>Numerical Validation: CFD simulations performed for three hot/cold flow rates to verify experimental results.</p> Results <p>Increasing baffle count and reducing spacing elevates natural frequencies, delaying resonance. Baffle arrangements maximizing heat transfer correlate with highest vibration amplitudes. Numerical simulations show strong agreement with experimental data.</p> Conclusions <p>Baffle optimization must balance thermal efficiency and vibration mitigation. Findings provide actionable insights for designing heat exchangers with improved durability and performance.</p>

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The Effect of the Baffle Number and Baffle Spacing on Vibrations and Heat Transfer in a Shell-and-Tube Heat Exchanger: An Experimental Investigation and Numerical Modeling

  • 期刊论文

  • 发表日期：

    2025年5月2日

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  • A. Heydari,
  • E. Jamshidi

摘要

Background

Vibration-induced issues during flow passage significantly impact the performance and lifespan of shell-and-tube heat exchangers. The interaction between baffle configuration, heat transfer, and vibration remains a critical area of study.

Objective

This research aims to simultaneously analyze heat transfer and vibration characteristics in a shell-and-tube heat exchanger by varying baffle numbers (4, 6, 8) and spacing (18.9, 13.5, 10.5 cm) under two cold water flow rates.

Methods

Experimental Design: Nine configurations tested, combining baffle numbers and distances.

Data Collection: Vibration amplitudes and natural frequencies recorded via accelerometer sensors; temperatures monitored at inlets/outlets.

Numerical Validation: CFD simulations performed for three hot/cold flow rates to verify experimental results.

Results

Increasing baffle count and reducing spacing elevates natural frequencies, delaying resonance. Baffle arrangements maximizing heat transfer correlate with highest vibration amplitudes. Numerical simulations show strong agreement with experimental data.

Conclusions

Baffle optimization must balance thermal efficiency and vibration mitigation. Findings provide actionable insights for designing heat exchangers with improved durability and performance.