Thermal performance of PEG-MWCNTs composites as shape-stabilised phase change materials for thermal energy storage: Fullerenes, Nanotubes and Carbon Nanostructures: Vol 0, No 0

Summary

The event of section change supplies (PCM) for thermal vitality storage is a promising know-how. Nonetheless, the liquid PCM leaks and low thermal conductivity restrict the sensible PCM functions. This text goals to resolve these issues; it presents the preparation and thermal characterisation of PCM enhanced by carbon-based nanoparticles. The polyethene glycol 6000 (PEG 6000) is used as PCM and multi-walled carbon nanotubes (MWCNTs) as a shell matrix and thermal conductivity enhancer. The pattern was ready by the sonification technique beneath vacuum circumstances. Fourier rework infra-red spectroscopy (FT-IR) and thermo-gravimetric evaluation (TGA) examined the chemical and thermal compatibility of the ready samples. The storage performances are examined by modulated differential scanning calorimetry characterisation. The nano-enhanced-PCM (NPCM) with 1 wt% MWCNTs confirmed wonderful form stability with none liquid leakage when the temperature was about 110 °C for 30 minutes. Drying technique has a major impact on the thermal storage capability of the NPCM. The melting, solidification factors and the latent heats of the NPCM had been measured as 61.75, 35.50 °C, and 174.24, 167.84 J g−1, respectively. In the meantime, the particular warmth is 2.63 J g−1°C−1 for the solid-state and a pair of.14 J g−1°C−1 for the liquid-state. The thermal conductivity of pristine PEG was improved by 49%.

  • Highlights
  • PEG-MWCNTs shape-stabilised section change supplies had been ready by ultrasound-assisted vacuum technique for environment friendly thermal vitality storage.

  • The thermophysical properties and thermal stability of the proposed NPCM has been analysed and mentioned.

  • The drying technique extremely influences the section change temperatures and latent heats of the ready NPCM.

  • PEG adsorption into MWCNTs reached 99 wt% with out leakage, and 1 wt% of MWCNTs enhanced the thermal conductivity by 49% and maintained good latent warmth of 175 J g−1.

  • The developed NPCM is a superb potential candidate for digital gadgets cooling functions.

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