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Numerical investigation of heat transfer and erosion characteristics for H-type finned oval tube with longitudinal vortex generators and dimples

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  • Zhao, X.B.
  • Tang, G.H.
  • Ma, X.W.
  • Jin, Y.
  • Tao, W.Q.

Abstract

To improve heat transfer performance and reduce erosion of economizers in coal-fired power plants, firstly the heat transfer and erosion characteristics is numerically studied for the single H-type finned oval tube with enhanced heat transfer structures including bleeding dimples, longitudinal vortex generators (LVGs), and compound dimple-LVG. The simulation results show that the oval tube with compound LVG-dimple achieves the highest overall heat transfer performance while the oval tube with LVG works most efficiently in the anti-wear performance. Then based on the H-type finned oval tube, the LVG structure on the first row of tubes together with hemisphere protrusions design, while the compound LVG-dimple on the rest tubes are also simulated. The optimized H-type finned oval tube bank heat exchanger is demonstrated of high performance on both heat transfer and anti-wear.

Suggested Citation

  • Zhao, X.B. & Tang, G.H. & Ma, X.W. & Jin, Y. & Tao, W.Q., 2014. "Numerical investigation of heat transfer and erosion characteristics for H-type finned oval tube with longitudinal vortex generators and dimples," Applied Energy, Elsevier, vol. 127(C), pages 93-104.
    • Handle: RePEc:eee:appene:v:127:y:2014:i:c:p:93-104
    DOI: 10.1016/j.apenergy.2014.04.033
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    References listed on IDEAS

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    1. Yakut, Kenan & Sahin, Bayram & Celik, Cafer & Alemdaroglu, Nihal & Kurnuc, Aslihan, 2005. "Effects of tapes with double-sided delta-winglets on heat and vortex characteristics," Applied Energy, Elsevier, vol. 80(1), pages 77-95, January.
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    3. Pradhyumn Bhale & Mrinal Kaushik & Jane-Sunn Liaw & Chi-Chuan Wang, 2019. "Airside Performance of H-Type Finned Tube Banks with Surface Modifications," Energies, MDPI, vol. 12(4), pages 1-16, February.
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    5. Choi, Seok Min & Kwon, Hyun Goo & Bae, Hyung Mo & Moon, Hee Koo & Cho, Hyung Hee, 2023. "Effects of staggered dimple array under different flow conditions for enhancing cooling performance of solar systems," Applied Energy, Elsevier, vol. 342(C).
    6. Tang, Song-Zhen & Wang, Fei-Long & He, Ya-Ling & Yu, Yang & Tong, Zi-Xiang, 2019. "Parametric optimization of H-type finned tube with longitudinal vortex generators by response surface model and genetic algorithm," Applied Energy, Elsevier, vol. 239(C), pages 908-918.
    7. Wang, Jingyi & Hua, Jing & Fu, Lin & Zhou, Ding, 2020. "Effect of gas nonlinearity on boilers equipped with vapor-pump (BEVP) system for flue-gas heat and moisture recovery," Energy, Elsevier, vol. 198(C).
    8. Lotfi, Babak & Sundén, Bengt & Wang, Qiuwang, 2016. "An investigation of the thermo-hydraulic performance of the smooth wavy fin-and-elliptical tube heat exchangers utilizing new type vortex generators," Applied Energy, Elsevier, vol. 162(C), pages 1282-1302.
    9. Mangrulkar, Chidanand K. & Dhoble, Ashwinkumar S. & Chamoli, Sunil & Gupta, Ashutosh & Gawande, Vipin B., 2019. "Recent advancement in heat transfer and fluid flow characteristics in cross flow heat exchangers," Renewable and Sustainable Energy Reviews, Elsevier, vol. 113(C), pages 1-1.
    10. Rashidi, Saman & Hormozi, Faramarz & Sundén, Bengt & Mahian, Omid, 2019. "Energy saving in thermal energy systems using dimpled surface technology – A review on mechanisms and applications," Applied Energy, Elsevier, vol. 250(C), pages 1491-1547.
    11. Zhang, Pan & Ma, Ting & Li, Wei-Dong & Ma, Guang-Yu & Wang, Qiu-Wang, 2018. "Design and optimization of a novel high temperature heat exchanger for waste heat cascade recovery from exhaust flue gases," Energy, Elsevier, vol. 160(C), pages 3-18.
    12. Orumbayev, Rakhimzhan K. & Bakhtiyar, Balzhan T. & Umyshev, Dias R. & Kumargazina, Madina B. & Otynchiyeva, Marzhan T. & Akimbek, Gulmira A., 2021. "Experimental study of ash wear of heat exchange surfaces of the boiler," Energy, Elsevier, vol. 215(PA).
    13. Wang, Jingyi & Hua, Jing & Fu, Lin & Wang, Zhe & Zhang, Shigang, 2019. "A theoretical fundamental investigation on boilers equipped with vapor-pump system for Flue-Gas Heat and Moisture Recovery," Energy, Elsevier, vol. 171(C), pages 956-970.
    14. Choi, Seok Min & Kwon, Hyun Goo & Kim, Taehyun & Moon, Hee Koo & Cho, Hyung Hee, 2022. "Active cooling of photovoltaic (PV) cell by acoustic excitation in single-dimpled internal channel," Applied Energy, Elsevier, vol. 309(C).

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