Preparation and characterization of nano‐enhanced myristic acid using metal oxide nanoparticles for thermal energy storage     
Yazarlar (5)
Mohammed Ouikhalfan
Cadi Ayyad University, Fas
Ahmet Sarı
Karadeniz Teknik Üniversitesi, Türkiye
Hassan Chehouani
Cadi Ayyad University, Fas
Brahim Benhamou
Laboratory Of Fluid Mechanics And Energetics, University Cadi Ayyad, Fas
Doç. Dr. Alper BİÇER Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı International Journal of Energy Research
Dergi ISSN 0363-907X Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 11-2019
Cilt No 43
Sayı 14
Sayfalar 8592 / 8607
DOI Numarası 10.1002/er.4856
Makale Linki https://onlinelibrary.wiley.com/doi/abs/10.1002/er.4856
Özet
Fatty acids have been broadly used as phase change materials (PCMs) for thermal energy storage. However, low thermal conductivity limits their performances. This paper investigates the influence of metal oxide nanoparticle addition on myristic acid (MA) as nano-enhanced PCM (NEPCM). Stability, chemical, and thermal properties were considered. Four types of nanoaprticles, TiO2, CuO, Al2O3, and ZnO, were dispersed in MA at 0.1, 0.5, 1, and 2 wt%. Stability and dispersion were checked by sediment photograph capturing and scanning electron microscopy/energy-dispersive spectroscopy. The Fourier-transformed infrared (FTIR) and X-ray diffraction analysis confirmed no chemical interaction between the nanoparticles and MA. The results revealed a ratio of thermal conductivity of 1.50, 1.49, 1.45, and 1.37, respectively, for 2 wt% of ZnO, Al2O3, CuO, and TiO2. The T-history method confirmed this enhancement. The latent heat thermal energy storage (LHTES) properties of the nano-enhanced MA were evaluated using differential scanning calorimetry. The latent heat capacities of nano-enhanced MA samples have dropped between 9.64 and 5.01 % compared with pure MA, and phase change temperature range was not affected significantly. The NEPCM was subjected to 500 thermal cycling, it showed a good thermal reliability as LHTES properties remained unchanged, while FTIR analysis showed similar characteristics compared with uncycled samples, indicating a good chemical stability. Based on the results regarding with the LHTES properties, cycling thermal reliability, and higher thermal conductivity improvement, it can be achieved that the MA/Al2O3 (2.0 wt%) and MA/ZnO (2.0 wt%) composites could be better PCMs for solar TES applications.
Anahtar Kelimeler
metal oxide nanoparticle | myristic acid | PCM | thermal conductivity | thermal energy storage