PERFORMANCE ENHANCEMENT OF TUBULAR HEAT EXCHANGERS USING SURFACE-PROFILING INTENSIFICATION TECHNIQUES

Authors

  • Nurmanov Otabek Isroil ugli Master's student, Department “Energy Engineering”, Karshi State Technical University
  • Ibragimov Umidjon Khimatullayevich DSc, Department “Energy Engineering”, Karshi State Technical University

Keywords:

tubular heat exchanger, heat transfer enhancement, knurled tube, spherical dimples, thermohydraulic performance, passive intensification, surface profiling.

Abstract

This study investigates passive heat transfer enhancement techniques for tubular heat exchangers involving surface profiling methods such as knurled annular protrusions and spherical dimples. These geometric modifications promote boundary-layer disruption and intensified convective heat transfer while maintaining acceptable hydraulic resistance. Industrial implementations-including Ecoflux, Dimpleflo, and spiral-knurled tube systems-demonstrate significant improvements in thermohydraulic performance, providing up to a 300% increase in heat transfer, a 5-26% reduction in pump energy consumption, and a 30-61% reduction in material usage. The findings confirm that surface-profiling designs offer a highly effective and economically viable approach for modernizing heat exchange equipment in various industrial sectors.

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References

Ibragimov U.Kh., Mukhiddinov D.N., Uzakov G.N. Current State of the Problem of Heat Transfer Intensification in Industry (Review). Scientific and Technical Journal of FerPI, Fergana: FerPI, 2018 (Special Issue), pp. 81–86.

Kalinin E.K., Dreytsyer G.A., Kopp I.Z., Myakochin A.S. Effective Heat Transfer Surfaces. Moscow: Energoatomizdat, 1998. 408 p.

Popov I.A., Makhyanov Kh.M., Gureev V.M. Physical Fundamentals and Industrial Applications of Heat Transfer Intensification: Heat Transfer Intensification. Monograph. Edited by Yu.M. Gortyshov. Kazan: Center for Innovative Technologies, 2009. 560 p.

Gortyshov Yu.F., Olimpiev V.V., Popov I.A. Efficiency of industrially promising heat transfer intensifiers // Izvestiya RAS. Power Engineering. 2002. No. 3. P. 102.

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Published

2025-12-17

How to Cite

Nurmanov Otabek Isroil ugli, & Ibragimov Umidjon Khimatullayevich. (2025). PERFORMANCE ENHANCEMENT OF TUBULAR HEAT EXCHANGERS USING SURFACE-PROFILING INTENSIFICATION TECHNIQUES. Journal of Applied Science and Social Science, 15(12), 676–681. Retrieved from https://www.internationaljournal.co.in/index.php/jasass/article/view/2682

Issue

Vol. 15 No. 12 (2025): Volume 15 Issue 12

Section

Articles

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