Experimental analysis for optimum thermal performance and thermophysical parameters of MWCNT based capric acid PCM by using T-history method

Yadav, Chandrmani; Sahoo, Rashmi Rekha

doi:10.1016/j.powtec.2020.02.008

Cited by 36 publications

(4 citation statements)

References 23 publications

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“…PCM for air conditioning applications, such as semiclathrate hydrates of tetra-n-butylammonium fluoride (TBAF) have been evaluated by this method, confirming that the T-history method is a practical method to determine the phase change enthalpy of hydrates [25]. Recently, the use of T-history has been reported in nano-enhanced (NEPCM) applications, in which the thermophysical parameters of multiwall carbon nanotubes (MWCNT) in capric acid were obtained [26].…”

Section: Introductionmentioning

confidence: 72%

Characterization of Thermophysical Properties of Phase Change Materials Using Unconventional Experimental Technologies

et al. 2020

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The growing interest in developing applications for the storage of thermal energy (TES) is highly linked to the knowledge of the properties of the materials that will be used for that purpose. Likewise, the validity of representing processes through numerical simulations will depend on the accuracy of the thermal properties of the materials. The most relevant properties in the characterization of phase change materials (PCM) are the phase change enthalpy, thermal conductivity, heat capacity and density. Differential scanning calorimetry (DSC) is the most widely used technique for determining thermophysical properties. However, several unconventional methods have been proposed in the literature, mainly due to overcome the limitations of DSC, namely, the small sample required which is unsuitable for studying inhomogeneous materials. This paper presents the characterization of two commercial paraffins commonly used in TES applications, using methods such as T-history and T-melting, which were selected due to their simplicity, high reproducibility, and low cost of implementation. In order to evaluate the reliability of the methods, values calculated with the proposed alternative methods are compared with the results obtained by DSC measurements and with the manufacturer’s technical datasheet. Results obtained show that these non-conventional techniques can be used for the accurate estimation of selected thermal properties. A detailed discussion of the advantage and disadvantage of each method is given.

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Section: Introductionmentioning

confidence: 72%

Characterization of Thermophysical Properties of Phase Change Materials Using Unconventional Experimental Technologies

et al. 2020

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“… [ 147 ] Myristic Acid Differential Scanning Calorimetry (DSC) Measurement of Heat Flow During solidification, the cooling rate was discovered to have an effect on the NEPCM's melting temperature and heat of fusion [ 148 ] Stearic Acid Hot Disk Transient Plane Source (TPS) Measurement of Thermal Conductivity At greater temperatures, the NEPCM's thermal conductivity plateaued after initially rising with temperature [ 149 ] Eicosane Laser Flash Technique Measurement of Thermal Diffusivity Increasing temperatures were found to increase the NEPCM's thermal diffusivity, with the highest values being recorded in the liquid form. [ 150 ] Capric Acid Transient Plane Source (TPS), Differential Scanning Calorimetry (DSC) Measurement of Thermal Conductivity and Heat Flow Graphene oxide was added to the NEPCM to improve its thermal conductivity and fusing heat [ 151 ] Glauber's Salt Hot Wire Method Measurement of Thermal Conductivity At the eutectic composition, the NEPCM displayed the greatest thermal conductivity values of all temperatures tested. [ 152 ] Polyethylene Glycol (PEG) Transient Plane Source (TPS), Measurement of Thermal Conductivity and Specific Heat Capacity There was a correlation between the PEG content and the NEPCM's thermal conductivity and specific heat capacity [ 151 ] Glauber's Salt Differential Scanning Calorimetry (DSC), Measurement of Heat of Fusion and Thermal Conductivity By mixing in graphite nanoplatelets, the NEPCM was able to raise both its melting point and thermal conductivity [ 153 ] Eicosane ...…”

Section: Synthesis Techniques Of Pcmmentioning

confidence: 99%

A comprehensive review of critical analysis of biodegradable waste PCM for thermal energy storage systems using machine learning and deep learning to predict dynamic behavior

Sharma,

Singh,

Makki

et al. 2024

Heliyon

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“…Importantly, the studies have also shown the performance of the nanomaterial in the PCM is dependent on its thermal conductivity and aspect ratio [245,267]. Importantly, studies have shown carbon-based nanomaterials (carbon nanotubes and graphene) are the best thermal conductivity improvers for the enhancement for PCMs [268][269][270]. However, studies have also reported discrepancies between simulation studies and experimental measurements.…”

Section: Enhancing the Thermal Properties Of Phase Change Materials With Nanoparticlesmentioning

confidence: 99%

Solar Thermal Energy Stills for Desalination: A Review of Designs, Operational Parameters and Material Advances

Chamsa-ard¹,

Fawcett²,

Fung³

et al. 2020

JEPT

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The demand for high-quality freshwater is increasing due to global population growth, intensifying agricultural practices and expanding industrial development. Additionally, many global regions have low levels of rainfall which makes them arid and incapable of supporting large human populations or agriculture. Currently, large quantities of fossil fuels are used to generate the power needed to drive energy intensive desalination processes that deliver high-quality freshwater to many of these regions. However, the use of fossil fuels has led to high greenhouse gas emissions, environmental degradation and global warming. Solar-thermal desalination is a low-cost, sustainable and eco-friendly strategy for producing high-quality freshwater without using energy derived from fossil fuels. However, in spite of recent developments to advance solar-thermal desalination, the most effective strategies for achieving higher performance levels still remains elusive. To tackle this problem, the present article reviews several solar-thermal still configurations, including materials, system design parameters, influencing factors and operational parameters. Moreover, recent material advances in plasmonic nanoparticle-based volumetric systems, nanomaterial enhanced phase change materials and interfacial solar evaporators are discussed. These new material advances can have the potential to significantly improve the conversion of light-to-heat, enhance vapor generation and promote greater water production rates.

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Experimental analysis for optimum thermal performance and thermophysical parameters of MWCNT based capric acid PCM by using T-history method

Cited by 36 publications

References 23 publications

Characterization of Thermophysical Properties of Phase Change Materials Using Unconventional Experimental Technologies

Characterization of Thermophysical Properties of Phase Change Materials Using Unconventional Experimental Technologies

A comprehensive review of critical analysis of biodegradable waste PCM for thermal energy storage systems using machine learning and deep learning to predict dynamic behavior

Solar Thermal Energy Stills for Desalination: A Review of Designs, Operational Parameters and Material Advances

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