Preparation and Numerical Simulation of Heat Transfer Performance for Methyl Palmitate-Methyl Stearate Binary Eutectic Mixture/Expanded Graphite Composite Phase Change Material

Abstract:

The binary eutectic mixtures of fatty acid esters are promising phase change materials for energy storage application. However, the low thermal conductivity which is a common problem for organic phase change materials restricts their further and better applications. In order to solve the problem, a novel composite phase change material (CPCM) was prepared in this research by using methyl palmitate-methyl stearate (MP-MS), a typical binary eutectic mixture of fatty acid esters, as phase change material and expanded graphite (EG) as heat transfer enhancer. The heat transfer performance of MP-MS/EG CPCM was numerical simulated by finite element analysis software ABAQUS. Numerical simulation results revealed that EG could notably enhance the heat transfer performance of MP-MS eutectic mixture. The heat transfer rate and phase change reaction rate of MP-MS/EG CPCM were 14 times and 3 times that of MP-MS eutectic mixture, respectively.

• Periodical: Materials Science Forum (Volume 993)
• Pages: 920-926
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.993.920
• Online since: May 2020
• Authors: Bi Chuan Chi, Yan Yao, Su Ping Cui*
• Keywords: Expanded Graphite, Fatty Acid Ester, Heat Transfer, Numerical Simulation, Phase Change Material

References

[1] A.A. Aydin, High-chain fatty acid esters of 1-octadecanol as novel organic phase change materials and mathematical correlations for estimating the thermal properties of higher fatty acid esters' homologous series, Sol. Energ. Mat. Sol. C. 113 (2013) 44-51.

DOI: 10.1016/j.solmat.2013.01.024

[2] Q.X. Yi, S. Tan, C. Jiang, et al, Preparation and thermal properties of octyl, decyl, dodecyl and tetradecyl stearates as phase change materials for thermal energy, Energ. Buildings. 152 (2017) 442-447.

DOI: 10.1016/j.enbuild.2017.07.074

[3] Y.P. Yuan, N. Zhang, W.Q. Tao, et al, Fatty acids as phase change materials: A review, Renew. Sust. Energ. Rev.29 (2014) 482-498.

[4] R. Nikolic, M.Marinovic-Cincovic, S. Gadzuric, et al, New materials for solar thermal storage–solid/liquid transitions in fatty acid esters, Sol. Energ. Mat. Sol. C. 79 (2003) 285-292.

DOI: 10.1016/s0927-0248(02)00412-9

[5] L. C. Liston, Y. Farnam, M. Krafcik, et al, Binary mixtures of fatty acid methyl esters as phase change materials for low temperature applications, Appl. Therm. Eng. 96 (2016) 501-507.

DOI: 10.1016/j.applthermaleng.2015.11.007

[6] S. Xu, L.M. Zou, X.L. Ling, et al, Preparation and thermal reliability of methyl palmitate/methyl stearate mixture as a novel composite phase change material, Energ. Buildings. 68 (2014) 372-375.

DOI: 10.1016/j.enbuild.2013.09.038

[7] Y.G. Yuan, Y.P. Yuan, N. Zhang, et al, Preparation and thermal characterization of capricmyristic–palmitic acid/expanded graphite composite as phase change material for energy storage, Mater. Lett. 125 (2014) 154-157.

DOI: 10.1016/j.matlet.2014.04.002

[8] X.H. Tang, B. Zhu, M.H. Xu, et al, Shape-stabilized phase change materials based on fatty acid eutectics/expanded graphite composites for thermal storage,Energ. Buildings. 109 (2015) 353-360.

DOI: 10.1016/j.enbuild.2015.09.074

[9] Z.W. Huang, X.N. Gao, T. Xu, et al, Thermal property measurement and heat storage analysis of LiNO3/KCl– expanded graphite composite phase change material, Appl. Energ. 115 (2014) 265-271.

DOI: 10.1016/j.apenergy.2013.11.019

[10] H. Zhang, X.N. Gao, C.X. Chen, et al, A capric-palmitic-stearic acid ternary eutectic mixture/expanded graphite composite phase change material for thermal energy storage, Compos. Part A-Appl. S. 87 (2016) 138-145.

DOI: 10.1016/j.compositesa.2016.04.024