PIV Investigations of Flow Patterns in the Entrance Configuration of Plate-fin Heat Exchanger

Abstract

Key words: plate-fin heat exchanger, particle image velocimetry, entrance configuration, optimum design

摘要： Flow characteristics in the entrance of plate-fin heat exchanger have been investigated by means of particle image velocimetry (PIV). The flow field was measured using the two-frame cross-correlation technique. Streamline and velocity contour graphs at different cross-sections were obtained in the experiment. The experimental results indicate that flow maldistribution in the conventional header is very serious, while the improved header configuration with punched baffle can effectively improve the uniformity. The flow maldistribution parameter in plate-fin heat exchanger has been reduced from 1.21 to 0.21, and the ratio of the maximum velocity to the minimum is reduced from 23.2 to 1.8 by install-ing the punched baffle. The results suggest room for the optimum design of plate-fin heat exchanger.

关键词: plate-fin heat exchanger;particle image velocimetry;entrance configuration;optimum design

WEN Jian(文键), LI Yanzhong(厉彦忠), ZHOU Aimin(周爱民) and MA Yansong(马岩松). PIV Investigations of Flow Patterns in the Entrance Configuration of Plate-fin Heat Exchanger[J]. .

WEN Jian(文键), LI Yanzhong(厉彦忠), ZHOU Aimin(周爱民) and MA Yansong(马岩松). PIV Investigations of Flow Patterns in the Entrance Configuration of Plate-fin Heat Exchanger[J]. CIESC Journal.

References

1    Zhang, Z., Li, Y.Z., Xu, Q., “Experimental research on flow maldistribution in plate-fin heat exchangers”, Chi-nese J. Chem. Eng., 12(1), 7—13 (2004).
2    Yee, T.F., Grossmann, I.E., Kravanja, Z., “Simultaneous optimization models for heat integration—I, Area and energy targeting and modeling of multi-stream exchang-ers”, Comput. Chem. Eng., 14 (10), 1151—1164 (1990).
3    Prabhakara, R.B., Krishna, K.P., Sarit, K.D., “Effect of flow distribution to the channels on the thermal per-formance of a plate heat exchanger”, Chem. Eng. Proc., 41(1), 41—58 (2002).
4    Fleming, R.B., “The effect of flow distribution in parallel channels of counter-flow heat exchangers”, Adv. Cryog. Eng., 12, 352 (1967).
5    Chiou, J.P., “The combined effects of maldistributions of inlet air temperature and the induced flow nonuniformity on the performance of radiator”, In: Heat and Oil Cooler Int. Conf., SAE paper, 850037 (1985).
6    Ranganayakulu, Ch., Seetharamu, K.N., “The combined ef-fects of wall longitudinal heat conduction, inlet fluid flow nonuniformity and temperature nonuniformity in compact tube-fin heat exchangers: A finite element method”, Int. J. Heat Mass Transfer, 42, 263—273 (1999).
7    Jiao, A.J., Li, Y.Z., Chen, C.Z., “Experimental investiga-tion on flow maldistribution in plate-fin heat exchanger”, Heat Transfer Eng., 24(4), 25—31(2003).
8    Zhang, Z., Li, Y.Z., “CFD simulation on inlet configura-tion of plate-fin heat exchanger”, Cryogenics, 43(12), 673—678 (2003).
9    Wen, J., Li, Y.Z., “Study of flow distribution and its im-provement on the header of plate-fin heat exchanger”, Cryogenics, 44 (11), 823—831 (2004).
10    Weterweel,  J., “Fundamentals  of digital  particle  image ve-locimetry”, Meas. Sci. Technol., 8 (12), 1392—1397 (1997).
11    Sheng, J., Meng, H., Fox, R.O., “A large eddy PIV method for turbulence dissipation rate estimation”, Chem. Eng. Sci., 55, 4423—4434 (2000).
12    Duursma, G.R., Glass, D.H., Rix, S.J.L., “PIV investiga-tions of flow structures in the fluidised bed freeboard re-gion”, Powder Technol., 120, 2—11 (2001).

[1]	Yongyao SUN, Qiuying GAO, Wenguang ZENG, Jiaming WANG, Yifei CHEN, Yongzhe ZHOU, Gaohong HE, Xuehua RUAN. Design and optimization of membrane-based integration process for advanced utilization of associated gases in N₂-EOR oilfields [J]. CIESC Journal, 2023, 74(5): 2034-2045.
[2]	LI Wenjin, ZHOU Yongjun, YUAN Mingyue, HE Hua, SUN Jianping. Comparative study of the flow characteristics in several frame-type impeller stirred tanks [J]. CIESC Journal, 2021, 72(4): 1998-2005.
[3]	Sishi YE, Qiao TANG, Yundong WANG. Measurement of flow characteristics of settler in mixer-settler [J]. CIESC Journal, 2020, 71(2): 535-543.
[4]	ZHANG Jianwei, MA Fanrong, ZHANG Zhigang, FENG Ying. POD analysis of flow field in horizontal two-group nozzle impinging stream reactor [J]. CIESC Journal, 2018, 69(7): 2916-2925.
[5]	SHANG Lingyi, WU Feng, MA Xiaoxun. Experimental investigation on particle flow characteristics in spouted bed with longitudinal vortex generator [J]. CIESC Journal, 2018, 69(5): 1923-1930.
[6]	FU Qiang, ZHANG Huishu, HU Nan, YUAN Xigang, YU Kuotsung. Simultaneous PIV/LIF measurements of interfacial convection during CO₂ dissolution in water and prediction of mass transfer coefficient [J]. CIESC Journal, 2018, 69(2): 586-594.
[7]	CAO Le, LIU Jinping, XU Xiongwen, LI Rixin. Overall heat transfer coefficient of plate-fin heat exchanger during a mixed refrigerant cryogenic process in low quality [J]. CIESC Journal, 2016, 67(4): 1277-1286.
[8]	LIU Jingcheng, ZHANG Shuyou, XU Jinghua, ZHOU Zhiyong, YI Guodong. Non-linear mapping and multi-objective optimization of leading flow structure in plate-fin heat exchanger [J]. CIESC Journal, 2015, 66(5): 1821-1830.
[9]	HE Lichen, GUAN Changfeng, ZHANG Chongwen, HE Changjiang, HE Jianyun, YAN Hua. PIV experiment for tube fitted with rotors [J]. CIESC Journal, 2014, 65(12): 4755-4759.
[10]	HAN Jingxiao, ZHOU Guobing. PIV investigation on induced flow characteristics in cylindrical winglet vortex generators [J]. CIESC Journal, 2013, 64(8): 2774-2780.
[11]	ZHU Jianlu, LI Yuxing, WANG Wuchang, LIU Yonghao, XIE Bin, YU Xichong. Reliability experiments in a cold box with nitrogen expansion liquefaction process running under sloshing conditions [J]. CIESC Journal, 2013, 64(4): 1183-1190.
[12]	YANG Bin，GAO Kai，DAN Yong，HAO Huidi. Development of the flow measurement techniques used in the experimental study of the chemical stirred tank [J]. Chemical Industry and Engineering Progree, 2012, 31(11): 2364-2372.
[13]	WU Lianying, XIAO Shengnan, HU Yangdong, GAO Congjie. Optimization and design of hybrid MSF/RO desalination system [J]. CIESC Journal, 2012, 63(11): 3574-3578.
[14]	ZHANG Jianwei，MA Yandong，FENG Ying. Development of modern flow measuring technique applied to fluid characteristic research in impinging stream mixer [J]. Chemical Industry and Engineering Progree, 2012, 31(02 ): 268-273.
[15]	ZHANG Minge1，ZHANG Lühong1，JIANG Bin1，2，LI Xingang1，2. PIV measurements of polymer solution in stirred tank [J]. , 2011, 30(8): 1681-.