Disk ve Halka Perdeli ve Merkez Borusuz Bölgeye Sahip Kabuk-Boru Isı Değiştiricilerinin Termal–Hidrolik Performansı

Öz

Bu çalışma, özgün bir boru demeti konfigürasyonuna sahip kabuk-boru tipi bir ısı değiştiricinin ısı transferi performansına ilişkin ayrıntılı sayısal bir inceleme sunmaktadır. Bu tasarımda, destek yapısının merkezindeki dairesel bölgede hiçbir ısı değişim borusu yerleştirilmemiştir ve böylece merkezde boşluk bulunan bir boru demeti düzeni elde edilmiştir. Analiz, farklı borusuz bölge boyutlarının genel ısı transferi özellikleri üzerindeki etkisine odaklanmaktadır. Sonuçlar, borusuz bölgedeki kendi kendine ısı değişiminin, kabuk tarafı ile boru tarafı arasındaki ısı dağılımının homojenliğini önemli ölçüde artırdığını göstermektedir. Ayrıca, borusuz bölge boyutu arttıkça bu homojenlik daha da gelişmekte olup pozitif bir korelasyon sergilemektedir. Borusuz bölgenin genişletilmesi, enerji tüketimini etkin bir şekilde azaltabilir ve işletme verimliliği ile ekonomik performansı iyileştirebilir. Ancak bu durum, ısı değişim yüzey alanının azalmasına bağlı olarak ısı transfer yoğunluğunda bir azalmaya da yol açmaktadır. Borusuz bölge boyutu 140 mm’den 440 mm’ye artırıldığında, ısı transferi homojenliği %65,9 oranında iyileşirken kabuk tarafı ısı transfer katsayısı %22,1 oranında azalmaktadır. TOPSIS karar verme yöntemine dayalı kapsamlı performans değerlendirmesi, 380 mm’lik borusuz bölge boyutunun ısı transfer yoğunluğu ile homojenlik arasında en uygun dengeyi sağladığını göstermektedir. Bu koşul altında, kabuk tarafı ısı transfer katsayısı 6594 W/(m²·K) değerine ulaşırken, boru tarafı çıkış sıcaklığının göreli standart sapması 0,601 olarak elde edilmiş ve en iyi genel performansı temsil etmiştir.

Anahtar Kelimeler

• kabuk-boru tipi ısı değiştirici
• disk ve halka tipi yönlendirici
• Fluent
• ısı transferi
• TOPSIS

Proje Numarası

11872043； SUSE652A004

Thermal–Hydraulic Performance of Shell-and-Tube Heat Exchangers with Disc-and-Ring Baffles and a Central Tube-Free Zone

Öz

This study presents a detailed numerical investigation of the heat transfer performance of a shell-and-tube heat exchanger featuring a distinctive tube bundle configuration. In this design, no heat exchange tubes are arranged within the circular region at the center of the support structure, resulting in a tube bundle layout with a central cavity. The analysis fo-cuses on the effect of different non-tube region sizes on overall heat transfer characteris-tics. The results show that self-heat exchange within the non-tube region significantly en-hances the uniformity of heat distribution between the shell side and tube side. Moreover, the uniformity improves with the increase in the non-tube region size, showing a positive correlation. Enlarging the non-tube region can effectively reduce energy consumption and improve operational efficiency and economic performance. However, this also results in a decrease in heat transfer intensity due to the reduction of the heat exchange surface area. When the size of the tube-free region increases from 140 mm to 440 mm, the heat transfer uniformity improves by 65.9%, whereas the shell-side heat transfer coefficient decreases by 22.1%. A comprehensive performance evaluation based on the TOPSIS deci-sion-making method indicates that a tube-free region size of 380 mm provides the optimal balance between heat transfer intensity and uniformity. Under this condition, the shell-side heat transfer coefficient reaches 6594 W/(m²·K), and the relative standard de-viation of the tube-side outlet temperature is 0.601, representing the best overall perfor-mance.

Anahtar Kelimeler

• shell-and-tube heat exchanger
• disc-and-donut baffle
• Fluent
• heat transfer
• TOPSIS

Destekleyen Kurum

This work was supported by the National Natural Science Foundation of China (Grant No. 11872043) and the Scientific Research and Innovation Team Program of Sichuan University of Science and Engineering (Grant No. SUSE652A004).

Proje Numarası

11872043； SUSE652A004

Etik Beyan

The authors declare that this manuscript is original, has not been published previously, and is not under consideration elsewhere. All authors have approved the manuscript and agree with its submission.The authors declare no conflicts of interest.

Kaynakça

1. Arani, A. A. A., & Moradi, R. (2019). Shell and tube heat exchanger optimization using new baffle and tube configuration. Applied Thermal Engineering, 157, 113736. https://doi.org/10.1016/j.applthermaleng.2019.113736
2. Banadkouki, M. R. Z. (2023). Selection of strategies to improve energy efficiency in industry: A hybrid approach using entropy weight method and fuzzy topsis. Energy, 279, 128070. https://doi.org/10.1016/j.energy.2023.128070
3. Cao, X., Du, T., Liu, X., & Zhang, L. (2019). Experimental and numerical investigation on heat transfer and fluid flow performance of sextant helical baffle heat exchangers. International Journal of Heat and Mass Transfer, 142, 118437. https://doi.org/10.1016/j.ijheatmasstransfer.2019.118437
4. Dong, C., Chen, Y., Zhao, J., & Wu, J. (2015). Comparison of heat transfer performances of helix baffled heat exchangers with different baffle configurations. Chinese Journal of Chemical Engineering, 23(1), 255-261. https://doi.org/10.1016/j.cjche.2014.10.014
5. El-Said, E. M., Elsheikh, A. H., Abd Elaziz, M., & Alshammari, F. (2021). Effect of curved segmental baffle on a shell and tube heat exchanger thermohydraulic performance: Numerical investigation. International Journal of Thermal Sciences, 165, 106922. https://doi.org/10.1016/j.ijthermalsci.2021.106922
6. Fan, Y., Lei, Y., Wang, Z., & Wang, H. (2021). Study on the influence of structural parameters on the performance of shell-and-tube heat exchangers with staggered louver baffles. Journal of Taiyuan University of Technology, 52(5), 817-821. https://doi.org/10.16355/j.cnki.issn1007-9432tyut.2021.05.017
7. Gu, X., Zhang, Q., Wang, L., & Chen, Y. (2022). Analysis of heat transfer and resistance performance in heat exchangers with u-shaped deflector baffles. Chemical Industry and Engineering Progress, 41(7), 3465-3474. https://doi.org/10.16085/j.issn.1000-6613.2021-1633
8. Hassaan, A. M. (2022). An investigation for the performance of using nanofluids in shell and tube heat exchanger. International Journal of Thermal Sciences, 177, 107569. https://doi.org/10.1016/j.ijthermalsci.2022.107569.

9. Ilinca, F., Pelletier, D., Garon, A., & Tétrault, D. (1998). A unified finite element algorithm for two-equation models of turbulence. Computers & Fluids, 27(3), 291-310. https://doi.org/10.1016/S0045-7930(97)00039-X.
10. Kaleru, A., Venkatesh, S., Kumar, P., & Reddy, K. (2023). Numerical and experimental study of a shell and tube heat exchanger for different baffles. Heat Transfer, 52(3), 2186-2206. https://doi.org/10.1002/htj.22780.
11. Li, N., Chen, J., Cheng, T., & Wang, Q. (2020). Analysing thermal-hydraulic performance and energy efficiency of shell-and-tube heat exchangers with longitudinal flow based on experiment and numerical simulation. Energy, 202, 117757. https://doi.org/10.1016/j.energy.2020.117757.
12. Li, Q., Zhu, X., Dong, C., & Zhang, Y. (2023). Investigation of noncircular orifice supporting baffle longitudinal flow heat exchangers. Case Studies in Thermal Engineering, 47, 103104. https://doi.org/10.1016/j.csite.2023.103104.
13. Liang, H. F., Ran, M. H., Wang, X., & Li, Z. (2025). Comprehensive evaluation of the whole-process utilization of hydrogen energy under different storage and transportation modes. Acta Energiae Solaris Sinica, 46(10), 180-188. https://doi.org/10.19912/j.0254-0096.tynxb.2024-1084.
14. Liu, J. J., Liu, Z. C., Liu, W., & Zhao, Y. (2015). 3d numerical study on shell side heat transfer and flow characteristics of rod-baffle heat exchangers with spirally corrugated tubes. International Journal of Thermal Sciences, 89, 34-42. https://doi.org/10.1016/j.ijthermalsci.2014.10.011.
15. Lü, S., Dai, S., Wang, L., & Chen, X. (2022). Study on the thermal performance of water-oil continuous helical baffle heat exchangers. Thermal Power Engineering, 37(4), 124-129. https://doi.org/10.16146/j.cnki.rndlgc.2022.04.017.
16. Mohammadzadeh, A. M., Jafari, B., Ghanbari, M., & Khoshkhoo, R. (2024). Comprehensive numerical investigation of the effect of various baffle design and baffle spacing on a shell and tube heat exchanger. Applied Thermal Engineering, 249, 123305. https://doi.org/10.1016/j.applthermaleng.2024.123305.
17. Peng, X., & Gao, Q. (2021). Optimization design of channel layout in plate-fin heat exchangers for head flow non-uniformity. Chemical Machinery, 48(2), 268-273. https://doi.org/10.16085/j.issn.1000-6613.2021-1633.
18. Promvonge, P., Srisawad, K., Sripattanapipat, S., & Skullong, S. (2024). Thermal effectiveness enhancement in heat exchange tube using louver-punched v-baffles. International Journal of Heat and Mass Transfer, 225, 125411. https://doi.org/10.1016/j.ijheatmasstransfer.2024.125411.
19. Ren, Y., Liu, Z., Wang, X., & Li, J. (2025). Numerical simulation study on heat transfer performance of double u-shaped buried pipe heat exchanger. Numerical Heat Transfer, Part A: Applications, 86(21), 7822-7841. https://doi.org/10.1080/10407782.2024.2354936.
20. Sun, Y., Wang, X., Long, R., & Zhang, H. (2019). Numerical investigation and optimization on shell side performance of a shell-and-tube heat exchanger with inclined trefoil-hole baffles. Energies, 12(21), 4138. https://doi.org/10.3390/en12214138.
21. Wang, K., Bai, C., Wang, Y., & Kong, C. (2019). Flow dead zone analysis and structure optimization for the trefoil-baffle heat exchanger. International Journal of Thermal Sciences, 140, 127-134. https://doi.org/10.1016/j.ijthermalsci.2019.02.044.
22. Wang, X., Liang, Y., Li, Z., & Chen, G. (2019). Experimental and numerical investigation on shell-side performance of a double shell-pass rod baffle heat exchanger. International Journal of Heat and Mass Transfer, 132, 631-642. https://doi.org/10.1016/j.ijheatmasstransfer.2019.12.056.
23. Wang, Z., Fu, Y., Zhang, L., & Li, H. (2022). Numerical analysis of baffle hole in shell-and-tube molten salt heat exchangers. Journal of Engineering Thermophysics, 43(10), 2790-2797. https://doi.org/10.13330/j.issn.1000-3940.2023.10.010.
24. Wang, Z., Lei, Y., Du, B., & Wang, H. (2020). Study on the performance of shell-and-tube heat exchangers with vertically arranged louver baffles. Journal of Taiyuan University of Technology, 51(6), 912-917. https://doi.org/10.16355/j.cnki.issn1007-9432tyut.2020.06.019
25. Wu, Z., Wang, T., Li, Y., & Zhang, H. (2023). Study on the shell-side heat transfer performance of heat exchangers with perforated mixed-flow baffles. Pressure Vessels, 40(10), 67-74. https://doi.org/10.3969/j.issn.1001-4837.2023.10.008.
26. Wusiman, K., Abdukeram, A., Yusup, A., & Tursun, M. (2020). Investigation of shell and tube heat exchanger with disc-and-doughnut baffles. Open Access Library Journal, 7, e06762-06710. https://doi.org/10.4236/oalib.1106762.
27. Xiong, Y., Li, H., Zhang, Y., & Wang, F. (2024). Multi-objective optimization design of evaporative condenser with non-azeotropic working fluid. Chemical Industry and Engineering Progress, 43(6), 2950-2960. https://doi.org/10.16085/j.issn.1000-6613.2023-0771.
28. Xu, Z., Guo, Y., Wang, L., & Liu, X. (2019). Configuration optimization and performance comparison of sthx-ddb and sthx-sb by a multi-objective genetic algorithm. Energies, 12(9), 1794. https://doi.org/10.3390/en12091794.
29. You, Y., Fan, A., Huang, S., & Liu, W. (2012). Numerical modeling and experimental validation of heat transfer and flow resistance on the shell side of a shell-and-tube heat exchanger with flower baffles. International Journal of Heat and Mass Transfer, 55(25-26), 7561-7569. https://doi.org/10.1016/j.ijheatmasstransfer.2012.07.058
30. Zhao, H., Jiang, J., Li, S., & Wang, C. (2023). Multi-objective optimization of automotive energy-absorbing box stamping quality based on entropy-weighted topsis decision-making. Forging & Stamping Technology, 48(10), 67-74 https://doi.org/10.13330/j.issn.1000-3940.2023.10.010.
31. Zheng, P., Wang, J., Li, M., & Zhang, Y. (2018). Structural optimization of baffle plates in shell-and-tube heat exchangers based on new heat transfer evaluation indicators. Journal of Jiangsu University (Natural Science Edition), 39(1), 64-70. https://doi.org/10.3969/j.issn.1671-7775.2018.01.011.