THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

Authors of this Paper

External Links

Jianjun Bai

,

Defan Qing

,

Junfei Guo

online first only

Enhanced heat transfer study of gas-solid two-phase flow in spiral flat tube

ABSTRACT
In order to enhance the heat transfer capacity of spiral flat tubes, the method of combining the spiral flat tube with gas-solid two-phase flow is adopted, and the size of the heat transfer capacity is compared with that of the ordinary round tube under the same conditions. Numerical simulations of the heat transfer characteristics of 61 heat transfer tubes with different structures are carried out by using FLUENT to analyze the heat transfer capacity of the tubes with different gas velocities, flatnesses, and conduction ranges, and the heat transfer enhancement factor E and the comprehensive heat transfer performance evaluation factor η were used to evaluate the comprehensive heat transfer capacity of the heat exchanger tube. The results show that the addition of particles can obviously strengthen the gas-phase heat transfer, and the heat transfer enhancement factor is up to 363% compared with that of the common round tube, corresponding to the parameters of the gas velocity of 7m/s, flatness of 2.4, and the pitch of 200mm, and the comprehensive heat transfer performance evaluation factor under the same conductivity at the gas velocity of 7m/s shows the change rule of increasing firstly and then decreasing with the flatness increasing.
KEYWORDS
spiral flat tube, gas-solid two-phase flow, enhanced heat transfer, numerical simulation
PAPER SUBMITTED: 2024-06-30
PAPER REVISED: 2024-09-13
PAPER ACCEPTED: 2024-09-16
PUBLISHED ONLINE: 2024-11-09
DOI REFERENCE: https://doi.org/10.2298/TSCI240630244B
REFERENCES
  1. Vicente, P.G.; Garc, A.; Viedma, A., Experimental investigation on heat transfer and frictional characteristics of spirally corrugated tubes in turbulent flow at different Prandtl numbers. Int J Heat Mass TranInt J Heat Mass Tran 2004, 47, (4), 671-681
  2. Dong, Y.; Huixiong, L.; Tingkuan, C., Pressure drop, heat transfer and performance of single-phase turbulent flow in spirally corrugated tubes. Exp Therm Fluid Sci 2001, 24, 131-138
  3. Rozzi, S.; Massini, R.; Paciello, G.; Pagliarini, G.; Rainieri, S.; Trifirò, A., Heat treatment of fluid foods in a shell and tube heat exchanger: Comparison between smooth and helically corrugated wall tubes. J Food EngJ Food Eng 2007, 79, (1), 249-254
  4. Lao, S.; Wongwises, S. The effects of corrugation pitch on the condensation heat transfer coefficient and pressure drop of R-134a inside horizontal corrugated tube. Int J Heat Mass TranInt J Heat Mass Tran 2010, 53, (13-14), 2924-2931
  5. Jun, L.; Pega, H.; Numerical study of R134a liquid-vapor flow in a vertical header for phase separation with low inlet quality. Refrigeration 2021, 129, 11-21
  6. Masou,N.; Mostoufi, N.; Hamidi, A.; Sotudeh-Gharebagh, R., Investigation of heat transfer between a horizontal tube and gas-solid fluidized bed. Int J Heat Fluid FlInt J Heat Fluid Fl 2008, 29, (5), 1504-1511
  7. Biso, P.C.; Câmara Bastos, J.C.S.; Meier, H.F.; Padoin, N.; Soares, C., Influence of different parameters on the tube-to-bed heat transfer coefficient in a gas-solid fluidized bed heat exchanger. Chemical Engineering and Processing - Process IntensificationChemical Engineering and Processing - Process Intensification 2020, 147, 107693
  8. Zhang,H.L.; Baeyens, J.; Degrève, J.; Brems, A.; Dewil, R., The convection heat transfer coefficient in a Circulating Fluidized Bed (CFB). Adv Powder TechnolAdv Powder Technol 2014, 25, (2), 710-715
  9. Jiang, F.; Yang, M.; Qi, G.P.; Xu, D.; Yang, Y.X.; Zhang, X.M.; Zhao, W.Y.; Li, X.L., Heat transfer and antiscaling performance of a Na2SO4 circulating fluidized bed evaporator. Appl Therm Eng 2019, 155, 123-134
  10. Li, X.; Liu, S.; Mo, X.; Sun, Z.; Tian, G.; Xin, Y.; Zhu, D., Investigation on Convection Heat Transfer Augment in Spirally Corrugated Pipe. EnergiesEnergies 2023, 16, (3), 1063
  11. Zhou,R.C;Chen,Z.J; Su, C, Numerically Simulation on Intensify Heat Transfer Characteristics of Spiral Flat Tube Based on Fluent. Equipment Manufacturing Technology 2017, (5), 198-200
  12. Zhou, X.W; Chen, S; Wang, P.X; Zhu, H.J; Li, X.Z, Comparative analysis of heat transfer and flow resistance performance in typical twisted tubes. The Chinese Journal of Process Engineering 2024, 24, (02), 172-181
  13. Cao, W; Wang, Z.Y; Zhang, W; Han, X; Liu, L; Fu, Q. H, Analysis on turbulent heat transfer characteristics of CuO-H2O nanofluids in the semi-circular helical tube. Contemporary Chemical Industry 2023, 52, (11), 2720-2725
  14. Zhen. F; Peng. L; Rong. H; Qing. L; Li. Z; Zu. H; Hua. H; Mei. Y, Effect of cross-section shapes on turbulent flow and field synergy in helical channels. 2016, 41, (6), 1960-1967
  15. Cuan. L; Zhuan. L; Yong. L; Yu. D; Wang, L, Heat transfer enhancement in gas-solid flow. Ciesc Jorunal 2014, 65, (7), 2485-2494
  16. Li, X.; Wang, L.; Feng, R.; Wang, Z.; Zhu, D., Thermal-Hydraulic Characteristics of Twisted Elliptical Tube Bundle in Staggered Arrangement. J Therm Sci 2021, 30, (6), 1925-1937
  17. Li, X.; Wang, L.; Feng, R.; Wang, Z.; Liu, S.; Zhu, D., Study on shell side heat transport enhancement of double tube heat exchangers by twisted oval tubes. Int Commun Heat MassInt Commun Heat Mass 2021, 124, 105273
  18. Tsuji, Y.; Tanaka, T.; Yonemura, S., Cluster patterns in circulating fluidized beds predicted by numerical simulation (discrete particle model versus two-fluid model). Powder Technol 1998, 95, (3), 254-264
  19. Hoomans, B.P.B.; Kuipers, J.A.M.; Briels, W.J.; van Swaaij, W.P.M., Discrete particle simulation of bubble and slug formation in a two-dimensional gas-fluidised bed: A hard-sphere approach. Chem Eng Sci 1996, 51, (1), 99-118
  20. Zhu, H.P.; Zhou, Z.Y.; Yang, R.Y.; Yu, A.B., Discrete particle simulation of particulate systems: Theoretical developments. Chem Eng SciChem Eng Sci 2007, 62, (13), 3378-3396
  21. Meng, H.; Meng, T.; Yu, Y.; Wang, Z.; Wu, J., Experimental and numerical investigation of turbulent flow and heat transfer characteristics in the Komax static mixer. Int J Heat Mass TranInt J Heat Mass Tran 2022, 194, 123006
  22. Mahdavi, M.; Sharifpur, M.; Meyer.J.P, CFD modelling of heat transfer and pressure drops for nanofluids through vertical tubes in laminar flow by Lagrangian and Eulerian approaches, International Journal of Heat and Mass Transfer 2015, 88, 803-813
  23. Maa, Y.F.; Hsu, C., Liquid-liquid emulsification by static mixers for use inmicroencapsulation. J MicroencapsulJ Microencapsul 1996, 13, (4), 419-33
  24. Morsi.S.A.; Alexander.A.J., An investigation of particle trajectories in two-phase flow systems. J Fluid Mech 1972, 55, 193-208
  25. Jiang, F.; Yang, M.; Qi, G.P.; Xu, D.; Yang, Y.X.; Zhang, X.M.; Zhao, W.Y.; Li, X.L., Heat transfer and antiscaling performance of a Na2SO4 circulating fluidized bed evaporator. Appl Therm EngAppl Therm Eng 2019, 155, 123-134
  26. Liu, S.; Yin, Y.; Tu, A.; Zhu, D., Experimental investigation on shell-side performance of a novel shell and tube oil cooler with twisted oval tubes. Int J Therm Sci 2020, 152, 106290
  27. Yang, S.; Zhang, L.; Xu, H.; Experimental study on convective heat transfer and flow resistance characteristics of water flow in twisted elliptical tubes. Appl Therm EngAppl Therm Eng 2011, 31, (14-15), 2981-2991
PDF VERSION [DOWNLOAD]
Enhanced heat transfer study of gas-solid two-phase flow in spiral flat tube