Abstract
Myristic acid has been extensively used for fabrication of phase change materials for thermal energy storage applications. The objective of present research was to investigate the influence of biofield treatment on physical and thermal properties of myristic acid. The study was performed in two groups (control and treated). The control group remained as untreated, and biofield treatment was given to treated group. The control and treated myristic acid were characterized by X-ray diffraction (XRD), Differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR) spectroscopy, and Laser particle size analyzer. XRD results revealed alteration in intensity of peaks as well as significant increase in crystallite size (27.07%) of treated myristic acid with respect to control. DSC study showed increase in melting temperature of treated myristic acid as compared to control. Nevertheless, significant change (10.16%) in latent heat of fusion (ΔH) was observed in treated myristic acid with respect to control. TGA analysis of treated myristic acid showed less weight loss (31.33%) as compared to control sample (60.49%). This may be due to increase in thermal stability of treated myristic acid in comparison with control. FT-IR results showed increase in frequency of –CH2 and C=O stretching vibrations, probably associated with enhanced bond strength and force constant of the respective bonds. The particle size analyzer showed significant decrease in average particle size (d50 and d99) of treated myristic acid with respect to control. Overall, the results showed significant alteration in physical, spectroscopic and thermal properties of myristic acid. The enhanced crystallite size, and thermal stability of treated myristic acid showed that treated myristic acid could be used as phase change material for thermal energy storage applications.
Highlights
Nowadays, the energy consumption and production has considered as an interesting topic and debatable among researchers
The X-ray diffraction (XRD) data of the myristic acid was well supported by the literature [13]
The result showed that crystallite size was increased significantly by 27.07% in treated myristic acid as compared to control
Summary
The energy consumption and production has considered as an interesting topic and debatable among researchers. The demand for generation of newer energy sources are increasing steadily day by day. This calls for design and development of novel energy saving devices in order to reduce the consumption of energy [1]. The enormous increase in production of greenhouse gases in atmosphere and elevation in cost of fossil fuel have caused researchers to develop more efficient thermal energy storage devices. Phase change materials (PCMs) are smart devices that can be utilized for thermal energy storage. Form stable phase change PCMs are especially interesting due to high latent heat, shape stable and it can be directly used without encapsulation methods [4]. The materials used for fabricating the form stable solid-liquid PCMs are organic compounds such as paraffin [5], fatty acids [6], fatty alcohol [7,8], polyethylene glycol and their mixtures [9,10]
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