Heat Transfer and Friction Factor Studies in a Circular Tube Fitted with Twisted Tape Consisting of Wire-nails

摘要/Abstract

摘要： This paper deals with the experimental investigation on Nusselt number,friction factor and thermal enhancement factor of a double pipe heat exchanger equipped with twisted tape consisting wire nails(WN-TT) and plain twisted tapes(P-TT) with three different twist ratios of y=2.0,4.4 and 6.0. Test runs are conducted using the water as the working fluid with Reynolds number range between 2000 and 12000 for WN-TT and P-TT. It is found that Nusselt number,friction factor and thermal enhancement factor in the tube equipped with WN-TT appreciably higher than those in the tube fitted with P-TT and plain tube. Over the range considered Nusselt number,friction factor and thermal enhancement factor in a tube with WN-TT are respectively,1.08 to 1.31,1.1 to 1.75 and 1.05 to 1.13 times of those in tube with P-TT. The better performance of WN-TT is due to combined effects of the following factors:(1) common swirling flow generated by P-TT,(2) additional turbulence offered by the wire nails. Empirical correlations for Nusselt number,friction factor and thermal enhancement factor are also formulated from the experimental results of WN-TT and P-TT.

关键词: heat transfer enhancement, friction factor, plain twisted tape, turbulence, swirl flow

Abstract: This paper deals with the experimental investigation on Nusselt number,friction factor and thermal enhancement factor of a double pipe heat exchanger equipped with twisted tape consisting wire nails(WN-TT) and plain twisted tapes(P-TT) with three different twist ratios of y=2.0,4.4 and 6.0. Test runs are conducted using the water as the working fluid with Reynolds number range between 2000 and 12000 for WN-TT and P-TT. It is found that Nusselt number,friction factor and thermal enhancement factor in the tube equipped with WN-TT appreciably higher than those in the tube fitted with P-TT and plain tube. Over the range considered Nusselt number,friction factor and thermal enhancement factor in a tube with WN-TT are respectively,1.08 to 1.31,1.1 to 1.75 and 1.05 to 1.13 times of those in tube with P-TT. The better performance of WN-TT is due to combined effects of the following factors:(1) common swirling flow generated by P-TT,(2) additional turbulence offered by the wire nails. Empirical correlations for Nusselt number,friction factor and thermal enhancement factor are also formulated from the experimental results of WN-TT and P-TT.

Key words: heat transfer enhancement, friction factor, plain twisted tape, turbulence, swirl flow

P. Murugesan, K. Mayilsamy, S. Suresh. Heat Transfer and Friction Factor Studies in a Circular Tube Fitted with Twisted Tape Consisting of Wire-nails[J]. , 2010, 18(6): 1038-1042.

参考文献

1 Webb, R.L., Hyun Kim, N., Principles of Enhanced Heat Transfer, 2nd edition, Taylor Francis(2005).
2 Dewan, A., Mahanda, P., Sumithra Raju, K., Suresh Kumar, P., “Review of passive heat transfer augmentation techniques”, J. Power Energy, 218, 509-525(2004).
3 Wang, L., Sunden, B., “Performance comparison of some tube inserts”, Int. Comm. Heat Mass Transfer, 29, 45-56(2002).
4 Eiamsa-ard, S., Thianpong, C., Promvonge, P., “Experimental investigation of heat transfer and flow friction in a circular tube fitted with regularly spaced twisted tape elements”, Int. Comm. Heat Mass Transfer, 33, 1225-1233(2006).
5 Naphon, P., “Heat transfer and pressure drop in the horizontal double pipes with and without twisted tape insert”, Int. Comm. Heat Mass Transfer, 33, 166-175(2006).
6 Promvonge, P., Eiamsa-ard, S., “Heat transfer behaviors in a tube with combined conical-ring and twisted-tape insert”, Int. Comm. Heat Mass Transfer, 34, 849-859(2007).
7 Sivashanmugam, P., Suresh, S., “Experimental studies on heat transfer and friction factor characteristics of laminar flow through a circular tube fitted with helical screw-tape inserts”, Appl. Therm. Eng., 26, 1990-1997(2006).
8 Sivashanmugam, P., Suresh, S., “Experimental studies on heat transfer and friction factor characteristics of turbulent flow through a circular tube fitted with helical screw-tape inserts”, Chem. Eng. Process, 46, 1292-1298(2007).
9 Sivashanmugam, P., Suresh, S., “Experimental studies on heat transfer and friction factor characteristics of laminar flow through a circular tube fitted with regularly spaced helical screw-tape inserts”, Exp. Therm. Fluid Sci., 31, 301-308(2007).
10 Sivashanmugam, P., Suresh, S., “Experimental studies on heat transfer and friction factor characteristics of turbulent flow through a circular tube fitted with regularly spaced helical screw-tape inserts”, Appl. Therm. Eng., 27, 1311-1319(2007).
11 Hasim, F., Yoshida, M., Miiyashita, H., “Compound heat transfer enhancement by a combination of a helically ribbed tube with twisted tape inserts”, J. Chem. Eng. Japan, 36, 1116-1122(2003).
12 Krishna, S. R., Pathipaka, G., Sivashanmugam, P., “Heat transfer and pressure drop studies in a circular tube fitted with straight full twist”, Exp. Therm. Fluid Sci., 33, 431438(2009).
13 Bharadwaj, P., Khondge, A.D., Date, A.W., “Heat transfer and pressure drop in a spirally grooved tube with twisted tape insert”, Int. J. Heat Mass Transfer, 52, 1938-1944(2009).
14 Eiamsa-ard, S., Thianpong, C., Eiamsa-ard, P., Promvonge, P., “Convective heat transfer heat transfer in a circular tube with short-length twisted tape insert”, Int. Comm. Heat Mass Transfer, 36, 365-371(2009).
15 Eiamsa-ard, S., Thianpong, C., Eiamsa-ard, P., “Turbulent heat transfer enhancement by counter/co-swirling flow in a tube fitted with twin twisted tapes”, Exp. Therm. Fluid Sci., 34, 53-62(2010).
16 Thianpong, C., Eiamsa-ard, P., Wongcharee, K., Eiamsa-ard, S., “Compound heat transfer enhancement of a dimpled tube with a twisted tape swirl generator”, Int. Comm. Heat Mass Transfer, 36, 698-704(2009).
17 Al-Fahed, S., Chamra, L.M., Chakroun, W., “Pressure drop and heat transfer comparison for both micro fin tube and twisted-tape inserts in laminar flow”, Exp. Therm. Fluid Sci., 18, 323-333(1999).
18 Manglik, R.M., Bergles, A.E., “Heat transfer and pressure drop correlations for twisted-tape inserts in isothermal tubes(II) Transition and turbulent flows”, Trans. ASME J. Heat Transfer, 115, 890-896(1993).
19 Agarwal, S.K., Raja Rao, M., “Heat transfer augmentation for the flow of a viscous liquid in circular tubes using the twisted tape inserts”, Int. J. Heat Mass Transfer, 39, 3547-3557(1996).
20 Al-Fahed, S., Chakroun, W., “Effect of tube-tape clearance on heat transfer for fully developed turbulent flow in a horizontal isothermal tube”, Int. J. Heat Fluid Flow, 17, 173-178(1996).
21 Tijing, L.D., Pak, B.C., Baek, B.J., Lee, D.H., “A study on heat transfer enhancement using straight and twisted internal fin inserts”, Int. Comm. Heat Mass Transfer, 33, 719-726(2006).
22 Chang, S.W., Yang T.L., Liou, J.S., “Heat transfer and pressure drop in a tube with broken twisted tape insert”, Exp. Therm. Fluid Sci., 32, 489-501(2007).
23 Chang, S.W., Jan, Y.J., Liou, J.S., “Turbulent heat transfer and pressure drop in tube fitted with serrated twisted tape”, Int. J. Thermal Sciences, 46, 506-518(2007).
24 Eiamsa-ard, S., Wongcharee, K., Eiamsa-ard, P., Thianpong, C., “Heat transfer enhancement in a tube using delta-winglet twisted tape inserts”, Appl. Therm. Eng., 30, 310-318(2010).
25 Eiamsa-ard, S., Seemawute, P., Wongcharee, K., “Influences of peripherally-cut twisted tape insert on heat transfer and thermal performance characteristics in a laminar and turbulent tube flows”, Exp. Therm. Fluid Sci., 34, 711-719(2010).
26 Chang, S.W., Lees, A.W., Chang, H.T., “Influence of spiky twisted tape insert on thermal fluid performance of tubular air-water bubbly flow”, Int. J. Therm. Sci., 48, 2341-2354(2009).
27 Chiu, Y.W., Jang, J.Y., “3D numerical and experimental analysis for thermal-hydraulic characteristics of air flow inside a circular tube with different tube inserts”, Appl. Therm. Eng., 29, 250-258(2009).
28 Eiamsa-ard, S., Wongcharee, K., Eiamsa-ard, P., Thianpong, C., “Thermo hydraulic investigation of turbulent flow through a round tube equipped with twisted tape consisting of centre wings and alternate-axes”, Exp. Therm. Fluid Sci., 34, 1151-1161(2010).
29 Murugesan, P., Mayilsamy, K., Suresh, S., “Turbulent heat transfer and pressure drop in tube fitted with square-cut twisted tape”, Chin. J. Chem. Eng., 18, 609-617(2010).

[1]	Hongwei Liang, Wenling Li, Zisheng Feng, Jianming Chen, Guangwen Chu, Yang Xiang. Numerical simulation of gas-liquid flow in the bubble column using Wray-Agarwal turbulence model coupled with population balance model[J]. 中国化学工程学报, 2023, 58(6): 205-223.
[2]	Feng Jiang, Di Xu, Ruijia Li, Guopeng Qi, Xiulun Li. Particle collision behavior and heat transfer performance in a Na₂SO₄ circulating fluidized bed evaporator[J]. 中国化学工程学报, 2022, 46(6): 40-52.
[3]	Chuanshuai Dong, Lin Lu, Tao Wen, Shaojie Zhang. Thermal performance assessment of self-rotating twisted tapes and Al₂O₃ nanoparticle in a circular pipe[J]. 中国化学工程学报, 2021, 32(4): 77-86.
[4]	Krunal M. Gangawane, Hakan F. Oztop. Mixed convection in the heated semi-circular lid-driven cavity for nonNewtonian power-law fluids: Effect of presence and shape of the block[J]. 中国化学工程学报, 2020, 28(5): 1225-1240.
[5]	Sajad Mir, Omid Ali Akbari, Davood Toghraie, Ghanbarali Sheikhzadeh, Ali Marzban, Saeid Mir, Pouyan Talebizadehsardari. A comprehensive study of two-phase flow and heat transfer of water/Ag nanofluid in an elliptical curved minichannel[J]. 中国化学工程学报, 2020, 28(2): 383-402.
[6]	P. Soleimani, M. Khoshvaght-Aliabadi, H. Rashidi, H. Bahmanpour. Performance enhancement of water bath heater at natural gas city gate station using twisted tubes[J]. 中国化学工程学报, 2020, 28(1): 165-179.
[7]	Haoshu Shen, Yuxin Wu, Minmin Zhou, Hai Zhang, Guangxi Yue. Stochastic modeling of subgrid-scale effects on particle motion in forced isotropic turbulence[J]. 中国化学工程学报, 2019, 27(12): 2884-2891.
[8]	Yongliang Wan, Runhan Wu, Cong Qi, Gang Duan, Ruizhao Yang. Experimental study on thermo-hydraulic performances of nanofluids flowing through a corrugated tube filled with copper foam in heat exchange systems[J]. Chinese Journal of Chemical Engineering, 2018, 26(12): 2431-2440.
[9]	Weiguo Xu, Guodong Liu, Qinghong Zhang, Shuai Wang, Huilin Lu, Heping Tan. Heat transfer and friction factor of Therminol liquid phase heat transfer fluid in a ribbed tube[J]. , 2017, 25(10): 1343-1351.
[10]	Pedram Karimi Pour-Fard, Ebrahim Afshari, Masoud Ziaei-Rad, Shahed Taghian-Dehaghani. A numerical study on heat transfer enhancement and design of a heat exchanger with porous media in continuous hydrothermal flow synthesis system[J]. , 2017, 25(10): 1352-1359.
[11]	Weiguo Xu, Guodong Liu, Qinghong Zhang, Shuai Wang, Huilin Lu, Heping Tan. Heat transfer and friction factor of Therminol liquid phase heat transfer fluid in a ribbed tube[J]. , 2017, 25(10): 1343-1351.
[12]	Pedram Karimi Pour-Fard, Ebrahim Afshari, Masoud Ziaei-Rad, Shahed Taghian-Dehaghani. A numerical study on heat transfer enhancement and design of a heat exchanger with porous media in continuous hydrothermal flow synthesis system[J]. , 2017, 25(10): 1352-1359.
[13]	M. Khoshvaght-Aliabadi, M. H. Akbari, F. Hormozi. An empirical study on vortex-generator insert fitted in tubular heat exchangers with dilute Cu-water nanofluid flow[J]. Chinese Journal of Chemical Engineering, 2016, 24(6): 728-736.
[14]	Xu Yang, Jinsong Zeng, Kefu Chen, Yucheng Feng. CFD modeling of a headboxwith injecting dilution water in a central step diffusion tube[J]. , 2016, 24(10): 1313-1324.
[15]	Yesul Kim, Li Huang, Sunling Gong, Charles Q. Jia. A new approach to quantifying vehicle induced turbulence for complex traffic scenarios[J]. Chinese Journal of Chemical Engineering, 2016, 24(1): 71-78.