Accelerated thermal cycle and chemical stability testing of polyethylene glycol (PEG) 6000 for solar thermal energy storage

R. K. Sharma, P. Ganesan, V. V. Tyagi, T.m. Indra Mahlia

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Accelerated thermal cycle test of polyethylene glycol (PEG) of molecular weight 6000, an organic phase change material (O-PCM), has been carried out for 1500 melt/freeze cycles. The latent heat of fusion and melting temperature is measured using differential scanning calorimeter between 0th and 1500th melt-freeze cycles to study the changes in its thermal properties. Also, the changes in the compositional/functional groups of the material during the cycle test are also measured using FT-IR spectroscopy technique. The melting temperature is found to be stable in the quoted range of 55-60 °C with a maximum deviation of 6.5% when compared to that of at 0th cycle. However, a gradual drop in the latent heat of fusion with the increasing number of thermal cycles is measured. The FT-IR spectra do not show any noticeable changes in the peaks which confirm its compositional stability even after the higher number of thermal cycles. Thermal and chemical reliability tests of PEG 6000 along with the techno-economic analysis have shown that this PCM has a significant potential to be used as a thermal energy storage system.

Original languageEnglish
Pages (from-to)235-239
Number of pages5
JournalSolar Energy Materials and Solar Cells
Volume147
DOIs
Publication statusPublished - 01 Apr 2016

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Chemical stability
Thermal energy
Energy storage
Polyethylene glycols
Latent heat
Testing
Melting point
Fusion reactions
Phase change materials
Pulse code modulation
Economic analysis
Calorimeters
Functional groups
Infrared spectroscopy
Thermodynamic properties
Molecular weight
Scanning
Hot Temperature
Polyethylene Glycol 6000

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films

Cite this

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abstract = "Accelerated thermal cycle test of polyethylene glycol (PEG) of molecular weight 6000, an organic phase change material (O-PCM), has been carried out for 1500 melt/freeze cycles. The latent heat of fusion and melting temperature is measured using differential scanning calorimeter between 0th and 1500th melt-freeze cycles to study the changes in its thermal properties. Also, the changes in the compositional/functional groups of the material during the cycle test are also measured using FT-IR spectroscopy technique. The melting temperature is found to be stable in the quoted range of 55-60 °C with a maximum deviation of 6.5{\%} when compared to that of at 0th cycle. However, a gradual drop in the latent heat of fusion with the increasing number of thermal cycles is measured. The FT-IR spectra do not show any noticeable changes in the peaks which confirm its compositional stability even after the higher number of thermal cycles. Thermal and chemical reliability tests of PEG 6000 along with the techno-economic analysis have shown that this PCM has a significant potential to be used as a thermal energy storage system.",
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Accelerated thermal cycle and chemical stability testing of polyethylene glycol (PEG) 6000 for solar thermal energy storage. / Sharma, R. K.; Ganesan, P.; Tyagi, V. V.; Mahlia, T.m. Indra.

In: Solar Energy Materials and Solar Cells, Vol. 147, 01.04.2016, p. 235-239.

Research output: Contribution to journalArticle

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