相变材料能够解决能量供求在时间与空间上不匹配的矛盾,是提高能源利用率和余热回收的有效方式。复合相变材料因其稳定的化学性质和较高的储能密度,成为近年来新材料研究的热点。介绍了复合相变材料的主要制备方法:多孔基体吸附法、微/纳胶囊包覆法、溶胶-凝胶法、高分子复合共聚法和静电纺丝法,讨论了各种制备方法的优势及不足。着重分析了复合相变材料储热性能、热循环稳定性及导热性能的研究进展,为新型高性能复合相变材料的深入研究提供理论依据。
Phase change materials (PCMs) play an important role in solving the imbalance between energy demand and supply as they can absorb and release large amount of heat during phase change procedure.Therefore,using PCMs is an efficient way to substantially improve energy utilization and conserve waste heat.Composite PCMs have been extensively researched due to their stable chemical properties and great heat storage capacity.Preparation methods of the composite PCMs were mainly introduced,including the multi-porous substrate adsorption method,micro/nano encapsulation method,sol-gel method,polymer composite copolymerization and electrospinning method.And the advantages and disadvantages of each method were also discussed.In addition,the progress in energy storage performance,thermal reliability and thermal conductivity of different composite PCMs was emphatically analyzed,and it may provide theoretical basis for further research in novel composite PCMs with high properties.
[1] Buker M S,Riffat S B.Solar assisted heat pump systems for low temperature water heating applications:a systematic review[J].Renewable and Sustainable Energy Reviews,2016,55:399-413.
[2] Kenisarin M,Mahkamov K.Passive thermal control in residential buildings using phase change materials[J].Renewable and Sustainable Energy Reviews,2016,55:371-398.
[3] Sari A,Karl¹ A,Alkan C,et al.Polyethyl methacrylate (PEMA)/fatty acids blends as novel phase change materials for thermal energy storage[J].Energy Sources,Part A(Recovery,Utilization,and Environmental Effects),2013,35(19):1813-1819.
[4] Huang Z W,Gao X N,Xu T,et al.Thermal property measurement and heat storage analysis of LiNO3/KCl-expanded graphite composite phase change material[J].Applied Energy,2014,115:265-271.
[5] Zhang N,Yuan Y P,Li T Y,et al.Study on thermal property of lauric-palmitic-stearic acid/vermiculite composite as form-stable phase change material for energy storage[J].Advances in Mechanical Engineering,2015,7(9):1687-1694.
[6] Tang B T,Wang L J,Xu Y J,et al.Hexadecanol/phase change polyurethane composite as form-stable phase change material for thermal energy storage[J].Solar Energy Materials and Solar Cells,2016,144:1-6.
[7] Yu H T,Gao J M,Chen Y,et al.Preparation and properties of stearic acid/expanded graphite composite phase change material for low-temperature solar thermal application[J].Journal of Thermal Analysis and Calorimetry,2016,124(1):87-92.
[8] Tang F,Su D,Tang Y J,et al.Synthesis and thermal properties of fatty acid eutectics and diatomite composites as shape-stabilized phase change materials with enhanced thermal conductivity[J].Solar Energy Materials and Solar Cells,2015,141:218-224.
[9] Qi G,Yang J,Bao R,et al.Hierarchical graphene foam-based phase change materials with enhanced thermal conductivity and shape stability for efficient solar-to-thermal energy conversion and storage[J].Nano Research,2017,10(3):802-813.
[10] Amin M,Putra N,Kosasih E A,et al.Thermal properties of beeswax/graphene phase change material as energy storage for building applications[J].Applied Thermal Engineering,2017,112:273-280.
[11] 于强强,张丽平.复合相变材料微胶囊的制备及表征[J].化工新型材料,2016,44(2):189-191.
[12] Chen R J,Yao R M,Xia W,et al.Electro/photo to heat conversion system based on polyurethane embedded graphite foam[J].Applied Energy,2015,152(1):183-188.
[13] Li B X,Liu T X,Hu L Y,et al.Fabrication and properties of microencapsulated paraffin@SiO2 phase change composite for thermal energy storage[J].ACS Sustainable Chemical & Engineering,2013,1(3):374-380.
[14] Zhang H Z,Wang X D.Synthesis and properties of microencapsulated n-octadecane with polyurea shells containing different soft segments for heat energy storage and thermal regulation[J].Solar Energy Materials and Solar Cells,2009,93(8):1366-1376.
[15] Malekipirbazari M,Sadrameli S M,Dorkoosh F,et al.Synthetic and physical characterization of phase change materials microencapsulated by complex coacervation for thermal energy storage applications[J].International Journal of Energy Research,2014,38(11):1492-1500.
[16] Chen Z,Cao L,Shan F,et al.Preparation and characteristics of microencapsulated stearic acid as composite thermal energy storage material in buildings[J].Energy and Buildings,2013,62:469-474.
[17] Qian T T,Li J H,Ma H W,et al.The preparation of a green shape-stabilized composite phase change material of polyethylene glycol/SiO2 with enhanced thermal performance based on oil shale ash via temperature-assisted sol-gel method[J].Solar Energy Materials and Solar Cells,2015,132:29-39.
[18] Liang S,Li Q B,Zhu Y L,et al.Nanoencapsulation of n-octadecane phase change material with silica shell through interfacial hydrolysis and polycondensation in miniemulsion[J].Energy,2015,93:1684-1692.
[19] Peng K L,Chen C Z,Pan W L,et al.Preparation and properties of β-cyclodextrin/4,4′-diphenylmethane diisocyanate/polyethylene glycol (β-CD/MDI/PEG) crosslinking copolymers as polymeric solid-solid phase change materials[J].Solar Energy Materials and Solar Cells,2016,145:238-247.
[20] Chen C Z,Liu W M,Wang H W,et al.Synthesis and performances of novel solid-solid phase change materials with hexahydroxy compounds for thermal energy storage[J].Applied Energy,2015,152:198-206.
[21] Cai Y B,Gao C T,Xu X L,et al.Electrospun ultrafine composite fibers consisting of lauric acid and polyamide 6 as form-stable phase change materials for storage and retrieval of solar thermal energy[J].Solar Energy Materials and Solar Cells,2012,103:53-61.
[22] Hu W,Yu X.Thermal and mechanical properties of bio-based PCMs encapsulated with nanofibrous structure[J].Renewable Energy,2014,62:454-458.
基金资助
国家自然科学基金(51863005,51462006,51102230,5187011196,U1501242,51671062);广西自然科学基金(2018GXNSFDA281051,2014GXNSFAA118401,2013GXNSFBA019244);广西科技项目(AD17195073,AA17202030-1)
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