Influence of alternating electric current on the process of heat accumulation in a mixture of Na2SO4 center dot 10H(2)O-Na2S2O3 center dot 5H(2)O


Amerkhanova S. K. , Frolova S. A. , Shlyapov R. M. , Uali A. S. , Belgibayeva D. S. , Kusepova L. A.

INTERNATIONAL JOURNAL OF SUSTAINABLE ENERGY, vol.41, no.9, pp.1360-1368, 2022 (ESCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 41 Issue: 9
  • Publication Date: 2022
  • Doi Number: 10.1080/14786451.2022.2051507
  • Journal Name: INTERNATIONAL JOURNAL OF SUSTAINABLE ENERGY
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus, Academic Search Premier, Aerospace Database, Agricultural & Environmental Science Database, CAB Abstracts, Communication Abstracts, Compendex, Environment Index, Geobase, Greenfile, INSPEC, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Page Numbers: pp.1360-1368
  • Keywords: Alternating electric current, crystal hydrates, sodium thiosulfate, frequency, latent heat of melting, THERMAL-ENERGY STORAGE, PHASE-CHANGE MATERIALS, REFRACTIVE-INDEXES, AQUEOUS-SOLUTIONS, SODIUM-SULFATE, GIBBS ENERGY, CRYSTALLIZATION, CAPACITIES, WATER
  • Ankara Haci Bayram Veli University Affiliated: No

Abstract

One of the most critical tasks of modern energy is accumulating thermal energy due to the inefficient use of thermal energy during the underloading of power systems in which heat-accumulating materials are used. Therefore the paper studies the effect of alternating electric current on the heat-accumulating properties in a mixture based on Na2SO4 center dot 10H(2)O. It is established that the AC effect leads to an increase in the melt crystallization temperature of Na2SO4 center dot 10H(2)O and Na2SO4 center dot 5H(2)O and also contributes to the return of heat. The selection of the treatment mode of the Na2SO4 center dot 10H(2)O-Na2S2O3 center dot 5H(2)O (50: 1 wt.) mixture by the AC was carried out. It was shown that the latent heat of melting of 329 kJ/kg is achieved at 500000 Hz frequency.