پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 158 |
| تعداد شمارهها | 6,230 |
| تعداد مقالات | 67,766 |
| تعداد مشاهده مقاله | 115,220,779 |
| تعداد دریافت فایل اصل مقاله | 89,967,665 |
Microencapsulation of Butyl Stearate as Phase Change Material by Melamine Formaldehyde Shell for Thermal Energy Storage | ||
| Journal of Chemical and Petroleum Engineering | ||
| مقاله 7، دوره 51، شماره 2، اسفند 2017، صفحه 147-154 اصل مقاله (623.56 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jchpe.2017.234191.1199 | ||
| نویسندگان | ||
| Mohammad Hassan Vakili* ؛ Mina Jahanfar | ||
| Deptartment of Engineering, Shahreza Branch, Islamic Azad University, Shahreza, Iran | ||
| چکیده | ||
| Butyl stearate as a phase change material was microencapsulated within melamine-formaldehyde resin using emulsion polymerization. Morphology and thermal specification of produced microcapsules were studied by Fourier transform infrared spectroscopy, FT-IR, scanning electron microscopy, SEM, and Differential scanning calorimetry analysis, DSC. FT-IR spectra validated the existence of the butyl stearate in the core of microcapsules. SEM graphs showed that melamine formaldehyde polymer without core was spherical and almost uniform with an approximate size of 2µm and microcapsules of butyl stearate in melamine formaldehyde shell were also spherical with the average diameter of 4µm. DSC results showed that microencapsulation reduced the latent heat of melting and freezing of butyl stearate and increased melting point. The performance of the produced microcapsules was obtained 36.64%. Moreover, the efficiency of energy storage by the microcapsules was obtained about 40%. It was observed that the rate of thermal energy conservation was high during the phase change process of microcapsule core and it was reduces after completion of the melting process. | ||
| کلیدواژهها | ||
| Butyl stearate؛ Formaldehyde؛ Melamine؛ Microencapsulation؛ Phase change materials | ||
| مراجع | ||
|
[1] Dincer, I. and Rosen, M. (2002). Thermal energy storage: systems and applications. 2thEd. John Wiley and Sons.
[2] Agyenim, F., Hewitt, N., Eames, P. and Smyth, M. (2010). “A review of materials, heat transfer and phase change problem formulation for latent heat thermal energy storage systems (LHTESS).” Renewable and Sustainable Energy Reviews, Vol. 14 (2), pp. 615-628.
[3] Nkwetta, D.N. and Haghighat, F. (2014). “Thermal energy storage with phase change material a state of-the art review.” Sustainable Cities and Society, Vol. 10, pp. 87-100.
[4] Kenisarin, M.M. (2014). “Thermophysical properties of some organic phase change materials for latent heat storage. A review.” Solar Energy, Vol. 107, pp. 553-575.
[5] Liu, M., Saman, W. and Bruno, F. (2012). “Review on storage materials and thermal performance enhancement techniques for high temperature phase change thermal storage systems.” Renewable and Sustainable Energy Reviews, Vol. 16 (4), pp. 2118-2132.
[6] Rathod, M.K. and Banerjee, J. (2013). “Thermal stability of phase change materials used in latent heat energy storage systems: a review.” Renewable and Sustainable Energy Reviews, Vol. 18, pp. 246-258.
[7] Kenisarin, M. and Mahkamov, K. (2007). “Solar energy storage using phase change materials.” Renewable and Sustainable Energy Reviews, Vol.11 (9), pp. 1913-1965.
[8]Shalaby, S.M., Bek, M.A. and El-Sebaii, A.A. (2014). “Solar dryers with PCM as energy storage medium: A review.” Renewable and Sustainable Energy Reviews, Vol. 33, pp. 110-116.
[9] Jamekhorshid, A. and Sadrameli, S.M. (2012). “Application of Phase Change Materials (PCMs) in Maintaining Comfort Temperature inside an Automobile.” World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering, Vol. 6 (1), pp. 33-35.
[10] Mondal, S. (2008). “Phase change materials for smart textiles–An overview.” Applied Thermal Engineering, Vol. 28 (11), pp. 1536-1550.
[11] Hosseini, M.J., Rahimi, M. and Bahrampoury, R. (2014). “Experimental and computational evolution of a shell and tube heat exchanger as a PCM thermal storage system.” International Communications in Heat and Mass Transfer, Vol. 50, pp. 128-136.
[12] Jamekhorshid, A., Sadrameli, S. M. and 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, Vol. 31, pp. 531-542.
[13] Alkan, C., Sarı, A., Karaipekli, A. and Uzun, O. (2009). “Preparation, characterization, and thermal properties of microencapsulated phase change material for thermal energy storage.” Solar Energy Materials and Solar Cells, Vol. 93. pp. 143-147.
[14] Zhao, C.Y. and Zhang, G.H. (2011). “Review on microencapsulated phase change materials (MEPCMs): fabrication, characterization and applications.” Renewable and Sustainable Energy Reviews, Vol. 15, pp. 3813-3832.
[15] Boh, B. and Šumiga, B. (2008). “Microencapsulation technology and its applications in building construction materials Tehnologija mikrokapsuliranja in njena uporaba v gradbenih materialih.” RMZ–Materials and Geoenvironment, Vol. 55, pp. 329-344.
[16] Tyagi, V.V., Kaushik, S.C., Tyagi, S.K. and Akiyama, T. (2011). “Development of phase change materials based microencapsulated technology for buildings: a review.” Renewable and Sustainable Energy Reviews, Vol. 15, pp. 1373-1391.
[17] Arshady, R. (1992). “Suspension, emulsion, and dispersion polymerization: A methodological survey.” Colloid & Polymer Science, Vol. 270, pp. 717-732.
[18] Baek, K.H., Lee, J.Y. and Kim, J.H. (2007). “Core/shell structured PCM nanocapsules obtained by resin fortified emulsion process.” Journal of Dispersion Science and Technology, Vol. 28, pp. 1059-1065.
[19] Alkan, C., Sarı, A. and Karaipekli, A. (2011). “Preparation, thermal properties and thermal reliability of microencapsulated n-eicosane as novel phase change material for thermal energy storage.” Energy Conversion and Management, Vol. 52, pp. 687-692.
[20] Wang, Y., Zhang, Y., Xia, T., Zhao, W. and Yang, W. (2014). “Effects of fabricated technology on particle size distribution and thermal properties of stearic–eicosanoic acid/polymethylmethacrylate nanocapsules.” Solar Energy Materials and Solar Cells, Vol. 120, pp. 481-490.
[21] Alay, S., Göde, F. and Alkan, C. (2011). “Synthesis and thermal properties of poly (n‐butyl acrylate)/n‐hexadecane microcapsules using different cross‐linkers and their application to textile fabrics.” Journal of Applied Polymer Science, Vol. 120, pp. 2821-2829.
[22] Chuah, T.G., Rozanna, D., Choong, T.S.Y., Sa'ari, M. and Salmiah, A. (2006). “Fatty acids used as phase change materials (PCMs) for thermal energy storage in building material applications.” JURUTERA, pp. 8-15.
[23] Liang, C., Lingling, X., Hongbo, S. and Zhibin, Z. (2009). “Microencapsulation of butyl stearate as a phase change material by interfacial polycondensation in a polyurea system.” Energy Conversion and Management, Vol. 50, pp. 723-729.
[24] Lu, S., Xing, J., Zhang, Z. and Jia, G. (2011). “Preparation and characterization of polyurea/polyurethane double‐shell microcapsules containing butyl stearate through interfacial polymerization.” Journal of Applied Polymer Science, Vol. 121, pp. 3377-3383.
[25] Bendic, R. nad Amza, G. (2012). “Use of encapsulated butyl stearate as a phase change material for thermal energy storage in intelligent building walls.” Revista De Chimie, Vol. 63, pp. 1148-1151.
[26] Alic, B., Sebenik, U. and Krajnc, M. (2012). “Microencapsulation of butyl stearate with melamine-formaldehyde resin: effect of decreasing the pH value on the composition and thermal stability of microcapsules.” Express Polymer Letters, Vol. 10, pp. 826-836. | ||
|
آمار تعداد مشاهده مقاله: 635 تعداد دریافت فایل اصل مقاله: 565 |
||