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Preparation, characterization and thermal properties of PMMA/n-heptadecane microcapsules as novel solid-liquid microPCM for thermal energy storage


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  • SarI, Ahmet
  • Alkan, Cemil
  • Karaipekli, Ali
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    This study is focused on the preparation, characterization and thermal properties of microencapsulated n-heptadecane with polymethylmethacrylate shell. The PMMA/heptadecane microcapsules were synthesized as novel solid-liquid microencapsulated phase change material (microPCMs) by emulsion polymerization method. The chemical and thermal characterization of the microPCMs were investigated using scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and thermogravimetry analysis (TGA). The diameters of microPCMs were found in the narrow range (0.14-0.40Â [mu]m) under the stirring speed of 2000Â rpm. The spherical surfaces of microPCMs were smooth and compact. The DSC results show that microPCMs have good energy storage capacity. Thermal cycling test showed that the microPCMs have good thermal reliability with respect to the changes in their thermal properties after repeated 5000 thermal cycling. TGA analyses also indicated that the microPCMs degraded in three steps and have good thermal stability. Based on all results, it can be considered that the PMMA/heptadecane microcapsules as novel solid-liquid microPCMs have good energy storage potential.

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    Article provided by Elsevier in its journal Applied Energy.

    Volume (Year): 87 (2010)
    Issue (Month): 5 (May)
    Pages: 1529-1534

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    Handle: RePEc:eee:appene:v:87:y:2010:i:5:p:1529-1534

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    Keywords: n-Heptadecane PMMA MicroPCM Thermal properties Energy storage;


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    1. Mawire, A. & McPherson, M. & Heetkamp, R.R.J. van den & Mlatho, S.J.P., 2009. "Simulated performance of storage materials for pebble bed thermal energy storage (TES) systems," Applied Energy, Elsevier, vol. 86(7-8), pages 1246-1252, July.
    2. Wang, Weilong & Yang, Xiaoxi & Fang, Yutang & Ding, Jing, 2009. "Preparation and performance of form-stable polyethylene glycol/silicon dioxide composites as solid-liquid phase change materials," Applied Energy, Elsevier, vol. 86(2), pages 170-174, February.
    3. Medrano, M. & Yilmaz, M.O. & Nogués, M. & Martorell, I. & Roca, Joan & Cabeza, Luisa F., 2009. "Experimental evaluation of commercial heat exchangers for use as PCM thermal storage systems," Applied Energy, Elsevier, vol. 86(10), pages 2047-2055, October.
    4. Wang, Weilong & Yang, Xiaoxi & Fang, Yutang & Ding, Jing & Yan, Jinyue, 2009. "Enhanced thermal conductivity and thermal performance of form-stable composite phase change materials by using [beta]-Aluminum nitride," Applied Energy, Elsevier, vol. 86(7-8), pages 1196-1200, July.
    5. Kuznik, Frédéric & Virgone, Joseph, 2009. "Experimental assessment of a phase change material for wall building use," Applied Energy, Elsevier, vol. 86(10), pages 2038-2046, October.
    6. Wang, Weilong & Yang, Xiaoxi & Fang, Yutang & Ding, Jing & Yan, Jinyue, 2009. "Preparation and thermal properties of polyethylene glycol/expanded graphite blends for energy storage," Applied Energy, Elsevier, vol. 86(9), pages 1479-1483, September.
    7. Hawlader, M. N. A. & Uddin, M. S. & Khin, Mya Mya, 2003. "Microencapsulated PCM thermal-energy storage system," Applied Energy, Elsevier, vol. 74(1-2), pages 195-202, January.
    8. Xiao, Wei & Wang, Xin & Zhang, Yinping, 2009. "Analytical optimization of interior PCM for energy storage in a lightweight passive solar room," Applied Energy, Elsevier, vol. 86(10), pages 2013-2018, October.
    9. Kenisarin, Murat & Mahkamov, Khamid, 2007. "Solar energy storage using phase change materials," Renewable and Sustainable Energy Reviews, Elsevier, vol. 11(9), pages 1913-1965, December.
    10. Rady, Mohamed, 2009. "Thermal performance of packed bed thermal energy storage units using multiple granular phase change composites," Applied Energy, Elsevier, vol. 86(12), pages 2704-2720, December.
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    Cited by:
    1. Jamekhorshid, A. & Sadrameli, S.M. & Farid, M., 2014. "A review of microencapsulation methods of phase change materials (PCMs) as a thermal energy storage (TES) medium," Renewable and Sustainable Energy Reviews, Elsevier, vol. 31(C), pages 531-542.
    2. Vitorino, Nuno & Abrantes, João C.C. & Frade, Jorge Ribeiro, 2013. "Gelled graphite/gelatin composites for latent heat cold storage," Applied Energy, Elsevier, vol. 104(C), pages 890-897.
    3. Lazaro, Ana & Peñalosa, Conchita & Solé, Aran & Diarce, Gonzalo & Haussmann, Thomas & Fois, Magali & Zalba, Belén & Gshwander, Stefan & Cabeza, Luisa F., 2013. "Intercomparative tests on phase change materials characterisation with differential scanning calorimeter," Applied Energy, Elsevier, vol. 109(C), pages 415-420.
    4. Zhao, C.Y. & Zhang, G.H., 2011. "Review on microencapsulated phase change materials (MEPCMs): Fabrication, characterization and applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(8), pages 3813-3832.
    5. Lu, W. & Tassou, S.A., 2012. "Experimental study of the thermal characteristics of phase change slurries for active cooling," Applied Energy, Elsevier, vol. 91(1), pages 366-374.


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