Thermal properties and heat storage analysis of palmitic acid-TiO 2 composite as nano-enhanced organic phase change material (NEOPCM)

Sharma, R. K.; Ganesan, P.; Tyagi, V.V.; Metselaar, Hendrik Simon Cornelis; Sandaran, Shanti C.

doi:10.1016/j.applthermaleng.2016.01.130

Cited by 198 publications

(62 citation statements)

References 33 publications

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“…17 About 5 wt% of TiO 2 incorporation in palmitic acid caused 80% improvement in TC value and 15% decrease of latent heat capacity. 18 The TC of lauric/stearic eutectic mixture was enhanced as 34.85%, 46.97%, and 62.12% by addition of 1.0 wt% of TiO 2 , ZnO, and CuO. The LHTES properties were not affected significantly.…”

Section: Introductionmentioning

confidence: 87%

“…The drop in the latent heat capacity after the addition of metal oxide elements was generally reported. 18 For lauric/stearic eutectic mixture, the latent heat capacity of melting/freezing decreased to 173. 7 The addition of 0.3 wt% of silver NPs diminished it to 190.2/190.4 J/g for heating and freezing.…”

Section: Lhtes Propertiesmentioning

confidence: 98%

“…The benefit of such system is the easiness to operate and the wide choice of materials that are diverse in their thermal and chemical properties. 18 The TC of lauric/stearic eutectic mixture was enhanced as 34.85%, 46.97%, and 62.12% by addition of 1.0 wt% of TiO 2 , ZnO, and CuO. 4 Organic PCMs have attracting characteristics such as the high storing capacity, suitable phase change range for low-temperature applications, and thermal reliability, all with a low cost.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of nano‐enhanced myristic acid using metal oxide nanoparticles for thermal energy storage

et al. 2019

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Summary 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.

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Section: Introductionmentioning

confidence: 87%

Section: Lhtes Propertiesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of nano‐enhanced myristic acid using metal oxide nanoparticles for thermal energy storage

et al. 2019

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“…Sharma et al [11] studied palmitic acid-TiO 2 as nano-enhanced organic phase change material and found that melting temperature varied in the range of -0.26 and +2°C and latent heat of fusion between 2 % to 15.5 % and latent heat of fusion of palmitic acid was decreased by 17.88% after 1500 melt/freeze cycle. Fang et al [12] studied eicosane/graphene nanoplatelets (GNPs) and found that average latent heat of fusion of the 1, 2, 5 and 10 wt.…”

Section: Introductionmentioning

confidence: 99%

Myo-inositol based nano-PCM for solar thermal energy storage

Singh

Suresh

Singh

et al. 2017

Applied Thermal Engineering

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“…The XRD measurement of the Sa/Fe3O4/Graphene shows the combination between the crystallinity peak patterns of Fe3O4/Graphene and Sa which confirms the presence of the desired Fe3O4/Graphene crystallinity in the Sa.The melting and solidifying process of the Sa/Fe3O4/Graphene mixtures was measured and analyzed through DSC. The phase change process of the PCM indicates the main characteristic of the PCM as an application for latent heat thermal storage (LHTS) [16]. The resulting curve of DSC measurements is shown in figure 2a.…”

Section: Resultsmentioning

confidence: 99%

Better latent heat and specific heat of stearic acid with magnetite/graphene nanocomposite addition for thermal storage application

Andiarto

Nuryadin

Taufik

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In our previous study, the addition of Magnetite (Fe3O4) into Stearic acid (Sa) as an organic phase change material (PCM) shows an enhancement in the latent heat for thermal energy storage applications. The latent heat of the PCM can also be increased by adding graphene material. Therefore, in this research, the thermal properties of Sa have been studied by the sonication method for several different concentrations of Fe3O4/Graphene nanocomposite additions. The structural properties of all of the samples were observed by X-Ray diffraction (XRD). Melting-solidifying behavior and specific heat value were measured by differential scanning calorimetry (DSC). The thermal degradation process of all samples was investigated by thermogravimetric analysis (TGA). Based on the DSC results, the presence of Fe3O4/Graphene in the Sa enhances the latent heat up to 20%. The specific heat value of the mixture was also found to be increased as the concentration of Fe3O4/Graphene to Sa increased. The TGA results show a lowered thermal degradation process of the Sa by the addition of the Fe3O4/Graphene which indicates a higher thermal stability of the mixture. In conclusion, the results demonstrate that the addition of Fe3O4/Graphene to Sa improves both the sensible heat and the latent heat of the mixture which are very important for thermal energy storage applications

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Thermal properties and heat storage analysis of palmitic acid-TiO 2 composite as nano-enhanced organic phase change material (NEOPCM)

Cited by 198 publications

References 33 publications

Preparation and characterization of nano‐enhanced myristic acid using metal oxide nanoparticles for thermal energy storage

Preparation and characterization of nano‐enhanced myristic acid using metal oxide nanoparticles for thermal energy storage

Myo-inositol based nano-PCM for solar thermal energy storage

Better latent heat and specific heat of stearic acid with magnetite/graphene nanocomposite addition for thermal storage application

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