多孔泡沫材料强化传热特性及场协同分析

doi:10.11896/j.issn.1005-023X.2018.06.029

Abstract
Figure/Table
References
Related Citation (11)

Download:

Full Text ( PDF ) (1902KB)
Export: BibTeX | EndNote (RIS)

Abstract The porous foams used in practical production applications are usually non-uniform foams. In this paper, uniform and non-uniform heat transfer models of porous foams were established to study the effects of porosity, pore density and air flow ve-locity on the synergy performance of velocity and temperature gradient in the downstream.The field synergy principle was employed to analyze the heat transfer enhancement mechanism in a rectangle channel inserted with porous foam under single phase convective heat transfer condition. The results suggest that the field synergy principle can be applied to analyze the convective heat transfer of porous foams. The synergistic degree was better at the center of the pore than the posterior edge of the skeleton. The synergistic degree was the worst at the edge of the skeleton, where the synergetic angle was about 90°. In other words, the porous foam improved the coordination between the velocity and temperature gradient for connective heat transfer in the channel and remarkably enhanced the heat transfer. Non-uniform porous foam had poor degree of coordination near the wall and the average synergetic angle of whole field was larger than that of uniform porous foams. The more uniform the better the synergistic condition of the porous foam, it was also found that the strength of uniform porous foam heat transfer enhancement was more than 1.2 times of non-uniform porous foam at the same velocity, pore density and porosity. The calculated results showed that the enhanced heat transfer intensities of the porous foams with porosities of 0.8, 0.85 and 0.9 were 3.3, 1.9 and 1.2 times that of the ordinary straight fin heat exchanger at the speed of 3 m/s,which has a guiding significant for the design of new heat exchanger.

Key words： porous foams heat transfer enhancement field synergy principle non-uniform convection

Published: 25 March 2018 Online: 2018-03-25

CLC number:

TK124

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LEI Hong
	ZHANG Xinming
	WANG Jiping

Cite this article:

LEI Hong,ZHANG Xinming,WANG Jiping. Heat Transfer Enhancement of Porous Foams and Analysis with Field Synergy Principle[J]. Materials Reports, 2018, 32(6): 1010-1014.

URL:

https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.06.029 OR https://www.mater-rep.com/EN/Y2018/V32/I6/1010

1 Lu T J, He D P, Chen C Q,et al. The multi-functionality of ultra-light porous metals and their applications[J].Advances in Mecha-nics,2006,36(4):517(in Chinese).
卢天健,何德坪,陈常青,等.超轻多孔金属材料的多功能特性及应用[J].力学进展,2006,36(4):517.
2 Zheng K C, Zhi W, Wang Z S, et al. Review on forced convection heat transfer in porous media[J].Physics,2012,61(1):14401.
3 Wang S, Li J, Zhang W. Research progress of open cell metal foams used in compact heat exchanger[J].Chemical Industry & Enginee-ring Progress,2008,27(5):675(in Chinese).
汪双凤,李炅,张伟保.开孔泡沫金属用于紧凑型热交换器的研究进展[J].化工进展,2008,27(5):675.
4 Li J, Zhang X, Jia L, et al. Research progress of open cell metal foams thermal transport performance[J].Journal of Refrigeration,2013,34(4):96(in Chinese).
李炅,张秀平,贾磊,等.开孔泡沫金属热传输性能研究进展[J].制冷学报,2013,34(4):96.
5 Guo Z. The physical mechanism of convection heat transfer and its control: The synergy of velocity field and heat[J].Chinese Science Bulletin,2000,45(19):2118(in Chinese).
过增元. 对流换热的物理机制及其控制:速度场与热的协同[J].科学通报,2000,45(19):2118.
6 Li J, Peng H, Ling X. Numerical study and experimental verification of transverse direction type serrated fins and field synergy principle analysis[J].Applied Thermal Engineering,2013,54(1):328.
7 Chen Q, Wang M, Guo Z Y. Field synergy principle for energy conservation analysis and application[J].Advances in Mechanical Engineering,2010,2(2):1652.
8 Chang S M, Chen H P. Indoor thermal comfort optimization by field synergy principle for air-conditioning[J].International Journal of Intelligent Systems & Applications,2011,3(1):17.
9 Jin Y, Tang G H, He Y L, et al. Parametric study and field synergy principle analysis of H-type finned tube bank with 10 rows[J].International Journal of Heat & Mass Transfer,2013,60(1):241.
10 Wang X, Song F Q, Qu Z G, et al. Numerical verification of the field synergy principle in the elliptic fluid flow[J].Journal of Engineering Thermophysics,2002,23(1):59(in Chinese).
王娴,宋富强,屈治国,等.场协同理论在椭圆型流动中的数值验证[J].工程热物理学报,2002,23(1):59.
11 Su X, Cheng X G, Meng J A, et al. Verification and characteristics of laminar field coordination equation[J].Journal of Engineering Thermophysics,2005,26(2):289(in Chinese).
苏欣,程新广,孟继安,等.层流协同方程的验证及其性质[J].工程热物理学报,2005,26(2):289.
12 Ma L D, Sun D X, Zhang J L. An analysis of the circumference fins tubes heat enhancement with the field synergy principle[J].Journal of Harbin Institute of Technology,2005,37(3):299(in Chinese).
马良栋,孙德兴,张吉礼.内环肋管道强化换热的场协同分析[J].哈尔滨工业大学学报,2005,37(3):299.
13 Huang Z, Liu W, Yang K, et al. Study on heat transfer performance for developing laminar tube flow inserted with ringy porous[C]∥International Conference on Energy and Environment Technology.IEEE Computer Society,2009:353.
14 Meng J A. Heat transfer technology of longitudinal vorticity strengthening and its application based on field synergy theory[D].Beijing:Tsinghua University,2003(in Chinese).
孟继安. 基于场协同理论的纵向涡强化换热技术及其应用[D].北京:清华大学,2003.
15 He Y L, Tao W Q. Numerical studies on the inherent interrelationship between field synergy principle and entransy dissipation extreme principle for enhancing convective heat transfer[J].International Journal of Heat & Mass Transfer,2014,74(74):196.
16 Zhai Y L, Xia G D, Liu X F, et al. Heat transfer in the microchannels with fan-shaped reentrant cavities and different ribs based on field synergy principle and entropy generation analysis[J].International Journal of Heat & Mass Transfer,2014,68(1):224.
17 Chen G M, Tso C P, Hung Y M. Field synergy principle analysis on fully developed forced convection in porous medium with uniform heat generation[J].International Communications in Heat & Mass Transfer,2011,38(9):1247.
18 Zhang X, Wang J,Gu Q. Influence of random porosity structure on thermal conductivity of heterogeneous porous foam[J].CIESC Journal,2014(3):879(in Chinese).
张新铭,王济平,谷沁洋.孔隙随机结构对非均质多孔泡沫导热性能的影响[J].化工学报,2014(3):879.
19 Kreith F, Manglik R M, Bohn M S. Principles of heat transfer[M].Stamford:Cengage Learning,2001.
20 Lu T J, Stone H A, Ashby M F. Heat transfer in open-cell metal foams[J].Acta Materialia,1998,46(10):3619.
21 过增元,黄素逸.场协同原理与强化传热新技术[M].北京:中国电力出版社,2004.
22 Yu B, Nie J H, Wang Q W, et al. Experimental study on the pressure drop and heat transfer characteristics of tubes with internal wave-like longitudinal fins[J].Heat and Mass Transfer,1999,35(1):65.
23 Mancin S, Zilio C, Diani A, et al. Air forced convection through metal foams: Experimental results and modeling[J].International Journal of Heat and Mass Transfer,2013,62:112.
24 Mancin S, Zilio C, Cavallini A, et al. Heat transfer during air flow in aluminum foams[J].International Journal of Heat & Mass Transfer,2010,53(21-22):4976.
25 Cavallini A,Mancin S,Rossetto L, et al. Air flow in aluminum foam: Heat transfer and pressure drops measurements[J].Experimental Heat Transfer,2010,23(1):94.
26 Ranut P, Nobile E, Mancini L. High resolution microtomography-based CFD simulation of flow and heat transfer in aluminum metal foams[J].Applied Thermal Engineering,2014,69(1-2):230.