Authors: Ashwani sagar, Assistant Professor Khemraj Beragi
Abstract: Shell-and-tube heat exchangers remain vital in industrial applications, and baffle design plays a key role in their thermal performance. This review paper provides a comprehensive comparison of four baffle configurations – segmental, helical, flower, and hybrid – highlighting their impact on heat transfer and pressure drop characteristics. Conventional segmental baffles generate strong cross-flow and high heat transfer but suffer from flow stagnation regions and significant pressure losses. Helical baffles have been developed to promote a smoother shell-side flow, yielding comparable heat transfer with markedly reduced pressure drop and fouling tendency. Flower baffles, a newer biomimetic design, employ petal-like baffle plates to induce swirling flows, achieving an excellent compromise between enhanced convective heat transfer and lower pumping power requirements. Hybrid baffles combine features of segmental and helical designs to further intensify heat transfer, albeit with some pressure drop penalty. The paper synthesizes findings from recent experimental and computational studies (including the author’s thesis work) to quantitatively compare performance metrics of these baffle types. A comparative analysis is presented with a summary table of key metrics and a graphical illustration of heat transfer vs. pressure drop trade-offs. The review also discusses practical considerations, such as manufacturing complexity and fouling behavior, and identifies research gaps. Overall, advanced baffle configurations demonstrate significant potential for improving energy efficiency in heat exchangers, and ongoing innovations in baffle design offer promising opportunities for future thermal performance enhancements.
DOI: http://doi.org/10.5281/zenodo.16981738
