Thermal Cycle Testing of a few Selected Inorganic Salts as Latent Heat Storage Materials for High- Temperature Thermal Storage

Thermal Cycle Testing of a few Selected Inorganic Salts as Latent Heat Storage Materials for High- Temperature Thermal Storage
  IJETT-book-cover           
  
© 2021 by IJETT Journal
Volume-69 Issue-8
Year of Publication : 2021
Authors : Abdullahi Bello Umar, Mukesh Kumar Gupta, Dharam Buddhi
DOI :  10.14445/22315381/IJETT-V69I8P203

How to Cite?

Abdullahi Bello Umar, Mukesh Kumar Gupta, Dharam Buddhi, "Thermal Cycle Testing of a few Selected Inorganic Salts as Latent Heat Storage Materials for High- Temperature Thermal Storage," International Journal of Engineering Trends and Technology, vol. 69, no. 8, pp. 17-25, 2021. Crossref, https://doi.org/10.14445/22315381/IJETT-V69I8P203

Abstract
Thermal cycling test was conducted for 50 cycles to determine the suitability of some commercialgrade phase change materials (PCMs) for solar thermal latent heat storage in terms of melting temperature, latent heat of fusion, and thermal stability. Four samples comprising of three single inorganic salts (NaNO3 and KNO3), one binary (KNO3/KCl), and one ternary (MgCl2/NaCl/KCl) eutectic were studied. It was discovered that all the samples have melting temperatures near the manufacturer`s quoted temperatures. However, the latent heat varies significantly for some and perfectly for sodium nitrate (NaNO3) and nearly for potassium nitrate (KNO3). In terms of stability, the Thermogravimetric analysis (TGA) test conducted indicates that all the tested PCMs are stable and after undergoing so many thermal cycles.

Keywords
Thermal cycle, PCM, Eutectics, Energy storage, solar power plant.

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