Experimental Study of Heat Transfer Enhancement and Friction Loss Induced by Inserted Rotor-assembled Strand(I) Water

Abstract

Abstract: The single-phase pressure drop and heat transfer in a rotor-assembled strand inserted tube were measured using water as the working fluid.Experiment using a smooth tube was carried out to calibrate the experimental system and the data reduction method.In the experiment,fixed mounts were used to eliminate the entrance effect. The experimental results of smooth tube show that employment of fixed mounts leads to a visible bias of friction factor at relative low Reynolds numbers,although it does not significantly affect the Nusselt numbers.The measured data of inserted tube reveal that rotor-assembled strand can significantly improve heat transfer with the Nusselt number increased by 101.6%-106.6% and the overall heat transfer coefficient increased by 58.1%-67.4% within the Reynolds number range of 20000 to 36000.Meanwhile,friction factor increases by 52.2%-84.2% within the same Reynolds number range.The correlations of Nusselt number and friction factor as function of the Reynolds number and Prandtl number were determined through multivariant linear normal regression.

Key words: heat transfer enhancement, rotor-assembled strand, friction factor, dependency

摘要： The single-phase pressure drop and heat transfer in a rotor-assembled strand inserted tube were measured using water as the working fluid.Experiment using a smooth tube was carried out to calibrate the experimental system and the data reduction method.In the experiment,fixed mounts were used to eliminate the entrance effect. The experimental results of smooth tube show that employment of fixed mounts leads to a visible bias of friction factor at relative low Reynolds numbers,although it does not significantly affect the Nusselt numbers.The measured data of inserted tube reveal that rotor-assembled strand can significantly improve heat transfer with the Nusselt number increased by 101.6%-106.6% and the overall heat transfer coefficient increased by 58.1%-67.4% within the Reynolds number range of 20000 to 36000.Meanwhile,friction factor increases by 52.2%-84.2% within the same Reynolds number range.The correlations of Nusselt number and friction factor as function of the Reynolds number and Prandtl number were determined through multivariant linear normal regression.

关键词: heat transfer enhancement, rotor-assembled strand, friction factor, dependency

XIE Pengcheng, LI Fengxiang, DING Yumei, YAN Hua, GUAN Changfeng, YANG Weimin. Experimental Study of Heat Transfer Enhancement and Friction Loss Induced by Inserted Rotor-assembled Strand(I) Water[J]. , 2008, 16(6): 849-855.

谢鹏程, 李锋祥, 丁玉梅, 阎华, 关昌峰, 杨卫民. Experimental Study of Heat Transfer Enhancement and Friction Loss Induced by Inserted Rotor-assembled Strand(I) Water[J]. , 2008, 16(6): 849-855.

References

1 Abu-Zaid, M., “A fouling evaluation system for industrial heat transfer equipment subject to fouling”, Int. Comm. Heat Mass Transfer, 27(6), 815-824(2000).
2 Mohamad, A.A., “Heat transfer enhancements in heat exchangers fitted with porous media(I) constant wall temperature”, International Journal of Thermal Sciences, 42, 385-395(2003).
3 Eiamsa-ard, S., Pethkool, S., Thianpong, C., Promvonge, P., “Turbulent flow heat transfer and pressure loss in a double pipe heat exchanger with louvered strip inserts”, Int. Comm. Heat Mass Transfer, 35(2), 120-129(2007).
4 Lin, Q.Y., Li, P.N., Lin, R.D., Feng, Q.G., Zhai, L.H., Dong, M.Y., “Study on the heat transfer enhancement by the hydraulic turbine in a tube”, Chinese Journal of Mechanical Engineering, 40(5), 165-169(2004).
5 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).
6 Naphon, P., “Effect of coil-wire insert on heat transfer enhancement and pressure drop of the horizontal concentric tubes”, Int. Comm. Heat Mass Transfer, 33, 753-763(2006).
7 García, A., Solano, J.P., Vicente, P.G., Viedma, A., “Enhancement of laminar and transitional flow heat transfer in tubes by means of wire coil inserts”, Int. J. Heat Mass Transfer, 50, 3176-3189(2007).
8 Yildiz, C., Bicer, Y., Pehlivan, D., “Heat transfer and pressure drop in a heat exchanger with a helical pipe containing inside springs”, Energy Convers. Mgmt, 38(6), 619-624(1997).
9 Zhang, S.L., Zhang, L., “Experimental study of heat exchanger of built-in spiral spring heat exchange tubes”, China Petroleum Machinery, 30(7), 5-8(2002).
10 Gül, H., Evin, D., “Heat transfer enhancement in circular tubes using helical swirl generator insert at the entrance”, International Journal of Thermal Sciences, 46(12), 1297-1303(2007).
11 Promvonge, P., Eiamsa-ard, S., “Heat transfer augmentation in a circular tube using V-nozzle turbulator inserts and snail entry”, Exp. Thermal Fluid Sci., 32(1), 332-340(2007).
12 Promvonge, P., Eiamsa-ard, S., “Heat transfer enhancement in a tube with combined conical-nozzle inserts and swirl generator”, Energy Convers. Mgmt, 47, 2867-2882(2006).
13 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).
14 Liao, Q., Xin, M.D., “Augmentation of convective heat transfer inside tubes with three-dimensional internal extended surfaces and twisted-tape inserts”, Chemical Engineering Journal, 78, 95-105(2000).
15 Zimparov, V., “Prediction of friction factors and heat transfer coefficients for turbulent flow in corrugated tubes combined with twisted tape inserts(I) Friction factors”, International Journal of Heat and Mass Transfer, 47, 589-599(2004).
16 Zimparov, V., “Prediction of friction factors and heat transfer coefficients for turbulent flow in corrugated tubes combined with twisted tape inserts(II) Heat transfer coefficient”, International Journal of Heat and Mass Transfer, 47, 385-393(2004).
17 Chang, S.W., Jan, Y.J., Liou, J.S., “Turbulent heat transfer and pressure drop in tube fitted with serrated twisted tape”, International Journal of Thermal Sciences, 46, 506-518(2007).
18 Sivashanmugam, P., Nagarajan, P.K., “Studies on heat transfer and friction factor characteristics of laminar flow through a circular tube fitted with right and left helical screw-tape inserts”, Exp. Thermal Fluid Sci., 32(1), 192-197(2007).
19 Sarma, P.K., Kishore, P.S., Kao, V.D., Subrahmanyam, T., “A combined approach to predict friction coefficients and convective heat transfer characteristics in a tube with twisted tape inserts for a wide range of Re and Pr”, International Journal of Thermal Sciences, 44, 393-398(2005).
20 Sarma, P.K., Subramanyam, T., Kishore, P.S., Rao, V.D., Kakac, S., “A new method to predict convective heat transfer in a tube with twisted tape inserts for turbulent flow”, International Journal of Thermal Sciences, 41, 955-960(2002).
21 Yang, W.M., Ding, Y.M., Geng, L.B., Huang, W., “Rotor-assembled automatic cleaning and heat transfer enhancement device”, CN Pat., 200520127121.9(2005).(in Chinese)
22 Meng, J.A., Liang, X.G., Chen, Z.J., Li, Z.X., “Experimental study on convective heat transfer in alternating elliptical axis tubes”, Exp. Thermal Fluid Sci., 29(4), 457-465(2005).
23 Dirker, J., Meyer, J.P., “Convective heat transfer coefficients in concentric annuli”, Heat Transfer Engineering, 26(2), 38-44(2005).
24 Vilemas, J., Cesna, B., Survila, V., Heat Transfer in Gas-cooled Annular Channels, Hemisphere, Washington(1987).
25 Gnielinski, V., “New equations for heat and mass transfer in turbulent pipe and channel flows”, Int. Chem. Eng., 16(2), 359-368(1976).
26 Petukhov, B.S., “Heat transfer and friction in turbulent pipe flow with variable properties”, In:Advances in Heat Transfer, Academic Press, New York, Vol.6, 503-564(1970).

[1]	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]. Chinese Journal of Chemical Engineering, 2022, 46(6): 40-52.
[2]	Chuanshuai Dong, Lin Lu, Tao Wen, Shaojie Zhang. Thermal performance assessment of self-rotating twisted tapes and Al₂O₃ nanoparticle in a circular pipe [J]. Chinese Journal of Chemical Engineering, 2021, 32(4): 77-86.
[3]	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]. Chinese Journal of Chemical Engineering, 2020, 28(5): 1225-1240.
[4]	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]. Chinese Journal of Chemical Engineering, 2020, 28(2): 383-402.
[5]	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]. Chinese Journal of Chemical Engineering, 2020, 28(1): 165-179.
[6]	Lichen He, Weimin Yang, Changfeng Guan, Hua Yan, Lin Zheng, Xiahua Zuo. Experimental investigation on flow characteristics in circular tube inserted with rotor-assembled strand using PIV [J]. Chin.J.Chem.Eng., 2019, 27(1): 1-9.
[7]	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]. Chin.J.Chem.Eng., 2018, 26(12): 2431-2440.
[8]	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.
[9]	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.
[10]	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.
[11]	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.
[12]	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]. Chin.J.Chem.Eng., 2016, 24(6): 728-736.
[13]	Suriya Chokphoemphun, Monsak Pimsarn, Chinaruk Thianpong, Pongjet Promvonge. Thermal performance of tubular heat exchanger with multiple twisted-tape inserts [J]. Chin.J.Chem.Eng., 2015, 23(5): 755-762.
[14]	Zhijia Yu, Xinghua Liu, Guozhu Kuang. Water slip flow in superhydrophobic microtubes within laminar flow region [J]. Chin.J.Chem.Eng., 2015, 23(5): 763-768.
[15]	Suriya Chokphoemphun, Monsak Pimsarn, Chinaruk Thianpong, Pongjet Promvonge. Heat transfer augmentation in a circular tube with winglet vortex generators [J]. Chin.J.Chem.Eng., 2015, 23(4): 605-614.