Melting heat transfer enhancement of a horizontal latent heat storage unit by fern-fractal fins

doi:10.1016/j.cjche.2020.08.022

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (11): 2857-2871.DOI: 10.1016/j.cjche.2020.08.022

• Energy, Resources and Environmental Technology • 上一篇下一篇

Melting heat transfer enhancement of a horizontal latent heat storage unit by fern-fractal fins

Zilong Deng¹, Suchen Wu¹, Hao Xu², Yongping Chen^1,2

1 Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China;
2 Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China

收稿日期:2020-03-21 修回日期:2020-07-19 出版日期:2020-11-28 发布日期:2020-12-31
通讯作者: Yongping Chen
基金资助:
This work was supported by the National Key R&D Program of China (2019YFB1504301), National Natural Science Foundation of China (51725602, 51906039), and Natural Science Foundation of Jiangsu Province (BK20180405).

Melting heat transfer enhancement of a horizontal latent heat storage unit by fern-fractal fins

Zilong Deng¹, Suchen Wu¹, Hao Xu², Yongping Chen^1,2

1 Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China;
2 Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China

Received:2020-03-21 Revised:2020-07-19 Online:2020-11-28 Published:2020-12-31
Contact: Yongping Chen
Supported by:
This work was supported by the National Key R&D Program of China (2019YFB1504301), National Natural Science Foundation of China (51725602, 51906039), and Natural Science Foundation of Jiangsu Province (BK20180405).

摘要/Abstract

摘要： The latent heat storage (LHS) technique is of crucial importance in chemical energy engineering. Inspired by multi-bifurcated fern leaves, a mimic fern-fractal fin is designed to improve the thermal energy charging efficiency. This paper develops a transient melting model of a rectangular LHS unit using fern-fractal fins, and their melting behaviors are compared with the conventional fins. Besides, a parametric optimization of fernfractal fins is conducted for maximizing the thermal efficiency based on the response surface method (RSM). The results indicate that the temperature uniformity is more superior and the melting duration is shorter for the fern-fractal LHS unit when compared with the conventional one. Interestingly, the fern-fractal LHS device presents a slower heat storage rate during the initial conduction-dominated and early convection-dominated melting stages, while a prominent melting enhancement is achieved during the later melting stage. The shortest melting time is obtained based on the RSM technique when a fern-fractal fin with length ratio α=0.94 and branch angle θ=54.7° is utilized. Compared with a conventional fin, the averaged heat storage rate increases by 88.3%, and the total melting time is declined by 40.3% for an optimized fern-fractal fin.

关键词: Multiscale, Fractal, Numerical simulation, Heat storage, Optimization

Abstract: The latent heat storage (LHS) technique is of crucial importance in chemical energy engineering. Inspired by multi-bifurcated fern leaves, a mimic fern-fractal fin is designed to improve the thermal energy charging efficiency. This paper develops a transient melting model of a rectangular LHS unit using fern-fractal fins, and their melting behaviors are compared with the conventional fins. Besides, a parametric optimization of fernfractal fins is conducted for maximizing the thermal efficiency based on the response surface method (RSM). The results indicate that the temperature uniformity is more superior and the melting duration is shorter for the fern-fractal LHS unit when compared with the conventional one. Interestingly, the fern-fractal LHS device presents a slower heat storage rate during the initial conduction-dominated and early convection-dominated melting stages, while a prominent melting enhancement is achieved during the later melting stage. The shortest melting time is obtained based on the RSM technique when a fern-fractal fin with length ratio α=0.94 and branch angle θ=54.7° is utilized. Compared with a conventional fin, the averaged heat storage rate increases by 88.3%, and the total melting time is declined by 40.3% for an optimized fern-fractal fin.

Key words: Multiscale, Fractal, Numerical simulation, Heat storage, Optimization

Zilong Deng, Suchen Wu, Hao Xu, Yongping Chen. Melting heat transfer enhancement of a horizontal latent heat storage unit by fern-fractal fins[J]. 中国化学工程学报, 2020, 28(11): 2857-2871.

Zilong Deng, Suchen Wu, Hao Xu, Yongping Chen. Melting heat transfer enhancement of a horizontal latent heat storage unit by fern-fractal fins[J]. Chinese Journal of Chemical Engineering, 2020, 28(11): 2857-2871.

参考文献

[1] K. Merlin, J. Soto, D. Delaunay, L. Traonvouez, Industrial waste heat recovery using an enhanced conductivity latent heat thermal energy storage, Appl. Energy 183(2016) 491-503.
[2] Y.J. Sun, S.W. Wang, F. Xiao, D.C. Gao, Peak load shifting control using different cold thermal energy storage facilities in commercial buildings:a review, Appl. Energy 71(2013) 101-114.
[3] A. Sari, K. Kaygusuz, Thermal energy storage characteristics of myristic and stearic acids eutectic mixture for low temperature heating applications, Chin. J. Chem. Eng. 14(2006) 270-275.
[4] C.B. Zhang, S.C. Wu, F. Yao, Evaporation regimes in an enclosed narrow space, Int. J. Heat Mass Transf. 138(2019) 1042-1053.
[5] G.J. Suppes, M.J. Goff, S. Lopes, Latent heat characteristics of fatty acid derivatives pursuant phase change material applications, Chem. Eng. Sci. 58(2003) 1751-1763.
[6] S.C. Wu, Y.W. Ding, C.B. Zhang, D.H. Xu, Improving the performance of a thermoelectric power system using a flat-plate heat pipe, Chin. J. Chem. Eng. 27(2019) 44-53.
[7] K. Hu, L. Chen, Q. Chen, X.H. Wang, J. Qi, Y. Min, Phase-change heat storage installation in combined heat and power plants for integration of renewable energy sources into power system, Energy 124(2017) 640-651.
[8] Z.L. Liu, X. Sun, C.F. Ma, Experimental study of the characteristics of solidification of stearic acid in an annulus and its thermal conductivity enhancement, Energy Convers. Manag. 46(6) (2005) 971-984.
[9] D.Y. Gao, Z.Q. Chen, M.H. Shi, Z.S. Wu, Study on the melting process of phase change materials in metal foams using lattice Boltzmann method, Sci. China. Technol. Sc. 53(2010) 3079-3087.
[10] J. Fukai, Y. Hamada, Y. Morozumi, O. Miyataka, Improvement of thermal characteristics of latent heat thermal energy storage units using carbon-fiber brushes:experiments and modeling, Int. J. Heat Mass Transf. 46(23) (2003) 4513-4525.
[11] A.H. Mosaffa, C.A.I. Ferreira, F. Talati, M.A. Rosen, Thermal performance of a multiple PCM thermal storage unit for free cooling, Energy Convers. Manag. 67(2013) 1-7.
[12] T. Zhang, M.M. Chen, Y. Zhang, Y. Wang, Microencapsulation of stearic acid with polymethylmethacrylate using iron (Ⅲ) chloride as photo-initiator for thermal energy storage, Chin. J. Chem. Eng. 25(2017) 1524-1532.
[13] M.K. Rathod, J. Banerjee, Thermal performance enhancement of shell and tube latent heat storage unit using longitudinal fins, Appl. Therm. Eng. 75(2015) 1084-1092.
[14] X.H. Yang, Z. Lu, Q.S. Bai, Q.L. Zhang, L.W. Jin, J.Y. Yan, Thermal performance of a shell-and-tube latent heat thermal energy storage unit:role of annular fins, Appl. Energy 202(2017) 558-570.
[15] Z.H. Rao, Q.C. Wang, C.L. Huang, Investigation of the thermal performance of phase change material/mini-channel coupled battery thermal management system, Appl. Energy 164(2016) 659-669.
[16] J.M. Mahdi, E.C. Nsofor, Melting enhancement in triplex-tube latent thermal energy storage system using nanoparticles-fins combination, Int. J. Heat Mass Transf. 109(2017) 417-427.
[17] Y. Tao, Y. He, Effects of natural convection on latent heat storage performance of salt in a horizontal concentric tube, Appl. Energy 143(2015) 38-46.
[18] H. Eslamnezhad, A.B. Rahimi, Enhance heat transfer for phase-change materials in triplex tube heat exchanger with selected arrangements of fins, Appl. Therm. Eng. 113(2017) 813-821.
[19] M. Turkyilmazoglu, Efficiency of heat and mass transfer in fully wet porous fins:exponential fins versus straight fins, Int. J. Refrig. 46(2014) 158-164.
[20] M. Turkyilmazoglu, Stretching/shrinking longitudinal fins of rectangular profile and heat transfer, Energy Convers. Manag. 91(2015) 199-203.
[21] M. Turkyilmazoglu, Heat transfer from moving exponential fins exposed to heat generation, Int. J. Heat Mass Transf. 116(2018) 346-351.
[22] W. Gao, M.F. Liu, S.F. Chen, C.B. Zhang, Y.J. Zhao, Droplet microfluidics with gravitydriven overflow system, Chem. Eng. J. 362(2019) 169-175.
[23] A. Sciacovelli, F. Gagliardi, V. Verda, Maximization of performance of a PCM latent heat storage system with innovative fins, Appl. Energy 137(2015) 707-715.
[24] M. Sheikholeslami, S. Loharsbi, D.D. Ganji, Numerical analysis of discharging process acceleration in LHTESS by immersing innovative fin configuration using finite element method, Appl. Therm. Eng. 107(2016) 154-166.
[25] K. Hosseinzadeh, M. Alizadeh, D.D. Ganji, Solidification process of hybrid nanoenhanced phase change material in a LHTESS with tree-like branching fin in the presence of thermal radiation, J. Mol. Liq. 275(2019) 909-925.
[26] C.B. Zhang, J. Li, Y.P. Chen, Improving the energy discharging performance of a latent heat storage (LHS) unit using fractal-tree-shaped fins, Appl. Energy 259(2019) 114102.
[27] K.A. Mcculloh, J.S. Sperry, F.R. Adler, Water transport in plants obeys Murray's law, Nature 421(2003) 939-942.
[28] Y. Zhou, G.S. Kassab, S. Molloi, On the design of the coronary arterial tree:a generalization of Murray's law, Phys. Med. Biol. 44(12) (1999) 2929-2945.
[29] P. Xu, A.P. Sasmito, B. Yu, A.S. Mujumdar, Transport phenomena and properties in treelike networks, Appl. Mech. Rev. 68(2016) 1-9.
[30] X.F. Zheng, G.F. Shen, C. Wang, Y. Li, D. Dunphy, T. Hasan, C.J. Brinker, B.L. Su, Bioinspired Murray materials for mass transfer and activity, Nat. Commun. 8(2017) 1-9.
[31] A. Arshad, H.M. Ali, M. Ali, S. Manzoor, Thermal performance of phase change material (PCM) based pin-finned heat sinks for electronics devices:effect of pin thickness and PCM volume fraction, Appl. Therm. Eng. 112(2017) 143-155.
[32] K.A.R. Ismail, C.L.F. Alves, M.S. Modesto, Numerical and experimental study on the solidification of PCM around a vertical axially finned isothermal cylinder, Appl. Therm. Eng. 21(1) (2001) 53-77.
[33] A.A. Al-Abidi, S. Mat, K. Sopian, M.Y. Sulaiman, A.T. Mohammad, Numerical study of PCM solidification in a triplex tube heat exchanger with internal and external fins, Appl. Therm. Eng. 61(2013) 684-695.
[34] B. Zalba, J.M. Marin, L.F. Caberza, H. Mehling, Review on thermal energy storage with phase change:materials, heat transfer analysis and applications, Appl. Therm. Eng. 35(2003) 251-283.
[35] V.R. Voller, C. Prakash, A fixed grid numerical modelling methodology for convection-diffusion mushy region phase-change problems, Int. J. Heat Mass Transf. 30(8) (1987) 1709-1719.
[36] B. Kamkari, H. Shokouhmand, Experimental investigation of phase change material melting in rectangular enclosures with horizontal partial fins, Int. J. Heat Mass Transf. 78(2014) 839-851.
[37] S. Lohrasbi, M. Sheikholeslami, D.D. Ganji, Multi-objective RSM optimization of fin assisted latent heat thermal energy storage system based on solidification process of phase change material in presence of copper nanoparticles, Appl. Therm. Eng. 118(2017) 430-447.

Melting heat transfer enhancement of a horizontal latent heat storage unit by fern-fractal fins

Melting heat transfer enhancement of a horizontal latent heat storage unit by fern-fractal fins

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