Progress of preparation, characterization and heat transfer enhancement of nano-encapsulated phase change materials (NEPCM)

doi:10.12028/j.issn.2095-4239.2017.0071

Abstract

Abstract: Nano-encapsulated phase change materials (NEPCM) have the potential to address the intermittent and less predictable nature of renewable energy resources. Other applications of the NEPCM include waste heat utilization, energy-saving buildings and thermal management of electronics. This paper introduces the latest research in NECPM preparation, characterization and heat transfer enhancement. The influence of preparation method on particle size and morphology of NEPCM are discussed. The characterization results show nanoencapsulation is able to effectively prevent the leakage of PCM and achieve an excellent thermal stability of PCM emulsions. In addition, the use of NEPCM could also effectively alleviate the rapid increase in the viscosity of PCM emulsions, and improve the thermal conductivity while reduce the subcooling degree of PCMs. Furthermore, both numerical and experimental studies have shown the benefit of NEPCM for heat transfer enhancement.

Key words: nanocapsule, thermal energy storage, PCM, PCM emulsion, heat transfer enhancement

FANG Xin1, WANG Mingjun2, ZHANG Xiaolong1, LV Hongkun1, YU Zitao3. Progress of preparation, characterization and heat transfer enhancement of nano-encapsulated phase change materials (NEPCM)[J]. Energy Storage Science and Technology, 2017, 6(4): 633-643.

References

[1] SALUNKHE P B, SHEMBEKAR P S. A review on effect of phase change material encapsulation on the thermal performance of a system[J]. Renewable and Sustainable Energy Reviews, 2012, 16(8): 5603-5616.
[2] GIRO-PALOMA J, MARTÍNEZ M, CABEZA L F, et al. Types, methods, techniques, and applications for microencapsulated phase change materials (MPCM): A review[J]. Renewable and Sustainable Energy Reviews, 2016, 53: 1059-1075.
[3] VELRAJ R, SEENIRAJ R, HAFNER B, et al. Heat transfer enhancement in a latent heat storage system[J]. Solar Energy, 1999, 65(3): 171-180.
[4] JAMEKHORSHID A, SADRAMELI S, FARID M. A review of microencapsulation methods of phase change materials (PCMs) as a thermal energy storage (TES) medium[J]. Renewable and Sustainable Energy Reviews, 2014, 31: 531-542.
[5] HO C, SIAO C R, YAN W M. Thermal energy storage characteristics in an enclosure packed with MEPCM particles: An experimental and numerical study[J]. International Journal of Heat and Mass Transfer, 2014, 73: 88-96.
[6] 张兴祥, 王馨, 吴文健. 相变材料胶囊制备与应用[M]. 北京: 化学工业出版社, 2009.
ZHANG Xingxiang, WANG Xin, WU Wenjian, et al. Preparation and application of phase change capsule materials[M]. Beijing: Chemical Industry Press, 2009.
[7] CHEN Z, FANG G. Preparation and heat transfer characteristics of microencapsulated phase change material slurry: A review[J]. Renewable and Sustainable Energy Reviews, 2011, 15(9): 4624- 4632.
[8] SUKHORUKOV G, FERY A, MÖHWALD H. Intelligent micro-and nanocapsules[J]. Progress in Polymer Science, 2005, 30(8): 885-897.
[9] DELGADO M, LÁZARO A, PEÑALOSA C, et al. Experimental analysis of the influence of microcapsule mass fraction on the thermal and rheological behavior of a PCM slurry[J]. Applied Thermal Engineering, 2014, 63(1): 11-22.
[10] ARSHADY R. Suspension, emulsion, and dispersion polymerization: A methodological survey[J]. Colloid & Polymer Science, 1992, 270(8): 717-732.
[11] FANG Y, LIU X, LIANG X, et al. Ultrasonic synthesis and characterization of polystyrene/n-dotriacontane composite nanoencapsulated phase change material for thermal energy storage[J]. Applied Energy, 2014, 132: 551-556.
[12] FUENSANTA M, PAIPHANSIRI U, ROMERO-SÁNCHEZ M D, et al. Thermal properties of a novel nanoencapsulated phase change material for thermal energy storage[J]. Thermochimica Acta, 2013, 565: 95-101.
[13] CHEN Z H, YU F, ZENG X R, et al. Preparation, characterization and thermal properties of nanocapsules containing phase change material n-dodecanol by miniemulsion polymerization with polymerizable emulsifier[J]. Applied Energy, 2012, 91(1): 7-12.
[14] LI M G, ZHANG Y, XU Y H, et al. Effect of different amounts of surfactant on characteristics of nanoencapsulated phase-change materials[J]. Polymer Bulletin, 2011, 67(3): 541-552.
[15] KONUKLU Y, PAKSOY H O, UNAL M. Nanoencapsulation of n-alkanes with poly(styrene-co-ethylacrylate) shells for thermal energy storage[J]. Applied Energy, 2015, 150: 335-340.
[16] KWON H J, CHEONG I W, KIM J H. Preparation of n-octadecane nanocapsules by using interfacial redox initiation in miniemulsion polymerization[J]. Macromolecular Research, 2010, 18(9): 923-926.
[17] CHO W, KOOK J W, LEE S M, et al. Modification of heat storage ability and adhesive properties of core/shell structured phase change material nanocapsules[J]. Macromolecular Research, 2016, 24(6): 556-561.
[18] JIN Z, WANG Y, LIU J, et al. Synthesis and properties of paraffin capsules as phase change materials[J]. Polymer, 2008, 49(12): 2903-2910.
[19] CHOI J K, LEE J G, KIM J H, et al. Preparation of microcapsules containing phase change materials as heat transfer media by in-situ polymerization[J]. Journal of Industrial and Engineering Chemistry, 2001, 7(6): 358-362.
[20] FANG Y, KUANG S, GAO X, et al. Preparation and characterization of novel nanoencapsulated phase change materials[J]. Energy Conversion and Management, 2008, 49(12): 3704-3707.
[21] TUMIRAH K, HUSSEIN M, ZULKARNAIN Z, et al. Nano- encapsulated organic phase change material based on copolymer nanocomposites for thermal energy storage[J]. Energy, 2014, 66: 881-890.
[22] FANG Y, YU H, WAN W, et al. Preparation and thermal performance of polystyrene/n-tetradecane composite nanoencapsulated cold energy storage phase change materials[J]. Energy Conversion and Management, 2013, 76: 430-436.
[23] FANG G, LI H, YANG F, et al. Preparation and characterization of nano-encapsulated n-tetradecane as phase change material for thermal energy storage[J]. Chemical Engineering Journal, 2009, 153(1): 217-221.
[24] HU X, HUANG Z, YU X, et al. Preparation and thermal energy storage of carboxymethyl cellulose-modified nanocapsules[J]. Bioenergy Research, 2013, 6(4): 1135-1141.
[25] PLATTE D, HELBIG U, HOUBERTZ R, et al. Microencapsulation of alkaline salt hydrate melts for phase change applications by surface thiol-michael addition polymerization[J]. Macromolecular Materials and Engineering, 2013, 298(1): 67-77.
[26] HUANG J, WANG T, ZHU P, et al. Preparation, characterization, and thermal properties of the microencapsulation of a hydrated salt as phase change energy storage materials[J]. Thermochimica Acta, 2013, 557: 1-6.
[27] GRAHAM M, SHCHUKINA E, DE CASTRO P F, et al. Nanocapsules containing salt hydrate phase change materials for thermal energy storage[J]. Journal of Materials Chemistry A, 2016, 4(43): 16906-16912.
[28] HONG Y, WU W, HU J, et al. Controlling supercooling of encapsulated phase change nanoparticles for enhanced heat transfer[J]. Chemical Physics Letters, 2011, 504(4): 180-184.
[29] WU W, BOSTANCI H, CHOW L, et al. Heat transfer enhancement of PAO in microchannel heat exchanger using nano-encapsulated phase change indium particles[J]. International Journal of Heat and Mass Transfer, 2013, 58(1): 348-355.
[30] LATIBARI S T, MEHRALI M, MEHRALI M, et al. Synthesis, characterization and thermal properties of nanoencapsulated phase change materials via sol-gel method[J]. Energy, 2013, 61: 664-672.
[31] HONG Y, DING S, WU W, et al. Enhancing heat capacity of colloidal suspension using nanoscale encapsulated phase-change materials for heat transfer[J]. ACS Applied Materials & Interfaces, 2010, 2(6): 1685-1691.
[32] BARLAK S, SARA O N, KARAIPEKLI A, et al. Thermal conductivity and viscosity of nanofluids having nanoencapsulated phase change material[J]. Nanoscale and Microscale Thermophysical Engineering, 2016, 20(2): 85-96.
[33] GENG L, WANG S, WANG T, et al. Facile synthesis and thermal properties of nanoencapsulated n-dodecanol with SiO2 shell as shape-formed thermal energy storage material[J]. Energy & Fuels, 2016, 30(7): 6153-6160.
[34] WANG Y, SHI H, XIA T D, et al. Fabrication and performances of microencapsulated paraffin composites with polymethylmethacrylate shell based on ultraviolet irradiation-initiated[J]. Materials Chemistry and Physics, 2012, 135(1): 181-187.
[35] ZHANG G H, BON S A, ZHAO C Y. Synthesis, characterization and thermal properties of novel nanoencapsulated phase change materials for thermal energy storage[J]. Solar Energy, 2012, 86(5): 1149-1154.
[36] FU W, LIANG X, XIE H, et al. Thermophysical properties of n-tetradecane@ polystyrene-silica composite nanoencapsulated phase change material slurry for cold energy storage[J]. Energy and Buildings, 2017, 136: 26-32.
[37] DE CORTAZAR M G, RODRÍGUEZ R. Thermal storage nanocapsules by miniemulsion polymerization[J]. Journal of Applied Polymer Science, 2013, 127(6): 5059-5064.
[38] JAMES CLERK M. A treatise on electricity and magnetism[M]. Oxford: Clarendon Press York, 1954.
[39] CHARUNYAKORN P, SENGUPTA S, ROY S. Forced convection heat transfer in microencapsulated phase change material slurries: Flow in circular ducts[J]. International Journal of Heat and Mass Transfer, 1991, 34(3): 819-833.
[40] LI B, LIU T, HU L, et al. Fabrication and properties of microencapsulated paraffin@ SiO2 phase change composite for thermal energy storage[J]. ACS Sustainable Chemistry & Engineering, 2013, 1(3): 374-380.
[41] ZHANG T, WANG Y, SHI H, et al. Fabrication and performances of new kind microencapsulated phase change material based on stearic acid core and polycarbonate shell[J]. Energy Conversion and Management, 2012, 64: 1-7.
[42] ZHANG H, WANG X. 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.
[43] ZHANG P, MA Z, WANG R. An overview of phase change material slurries: MPCS and CHS[J]. Renewable and Sustainable Energy Reviews, 2010, 14(2): 598-614.
[44] VAND V. Theory of viscosity of concentrated suspensions[J]. Nature, 1945, 155: 364-365.
[45] YAMAGISHI Y, TAKEUCHI H, PYATENKO A T, et al. Characteristics of microencapsulated PCM slurry as a heat-transfer fluid[J]. AIChE Journal, 1999, 45(4): 696-707.
[46] FANG Y, KUANG S, GAO X, et al. Preparation of nanoencapsulated phase change material as latent functionally thermal fluid[J]. Journal of Physics D: Applied Physics, 2008, 42(3): 035407.
[47] KURAVI S, KOTA K M, DU J, et al. Numerical investigation of flow and heat transfer performance of nano-encapsulated phase change material slurry in microchannels[J]. Journal of Heat Transfer, 2009, 131(6): 177-181.
[48] SEYF H R, WILSON M R, ZHANG Y, et al. Flow and heat transfer of nanoencapsulated phase change material slurry past a unconfined square cylinder[J]. Journal of Heat Transfer, 2014, 136(5): doi: 10.1115/1.4025903.
[49] SEYF H R, ZHOU Z, MA H, et al. Three dimensional numerical study of heat-transfer enhancement by nano-encapsulated phase change material slurry in microtube heat sinks with tangential impingement[J]. International Journal of Heat and Mass Transfer, 2013, 56(1): 561-573.
[50] 过增元. 国际传热研究前沿-微细尺度传热[J]. 力学进展, 2000, 30(1): 1-6.
GUO Z Y. Frontier of heat transfer-microscale heat transfer[J]. Advances in Mechanics, 2000, 30(1): 1-6.
[51] BAI D, ZHANG X, CHEN G, et al. Replacement mechanism of methane hydrate with carbon dioxide from microsecond molecular dynamics simulations[J]. Energy & Environmental Science, 2012, 5(5): 7033-7041.
[52] HONEYCUTT J D, ANDERSEN H C. Molecular dynamics study of melting and freezing of small Lennard-Jones clusters[J]. Journal of Physical Chemistry, 1987, 91(19): 4950-4963.
[53] SONG B, YANG J, ZHAO J, et al. Intercalation and diffusion of lithium ions in a carbon nanotube bundle by ab initio molecular dynamics simulations[J]. Energy & Environmental Science, 2011, 4(4): 1379-1384.
[54] RAO Z, WANG S, PENG F. Self diffusion of the nano-encapsulated phase change materials: A molecular dynamics study[J]. Applied Energy, 2012, 100: 303-308.
[55] RAO Z, WANG S, PENG F. Molecular dynamics simulations of nano-encapsulated and nanoparticle-enhanced thermal energy storage phase change materials[J]. International Journal of Heat and Mass Transfer, 2013, 66: 575-584.