Direct impregnation and characterization of Colemanite/Ulexite-Mg(OH)(2) paraffin based form-stable phase change composites

Horpan M. S., ŞAHAN N., Paksoy H. Ö., Sivrikaya O., Güneş M.

SOLAR ENERGY MATERIALS AND SOLAR CELLS, cilt.195, ss.346-352, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 195
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1016/j.solmat.2019.03.018
  • Dergi Adı: SOLAR ENERGY MATERIALS AND SOLAR CELLS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.346-352
  • Anahtar Kelimeler: Paraffin, Colemanite, Ulexite, Form-stable composites, TES, THERMAL-ENERGY STORAGE, PARAFFIN/EXPANDED GRAPHITE COMPOSITE, EXPANDED PERLITE/PARAFFIN COMPOSITE, DECOMPOSITION, CONDUCTIVITY
  • Çukurova Üniversitesi Adresli: Evet

Özet

Paraffin is mainly preferred as an organic phase change material (PCM) in thermal energy storage (TES) systems especially for cooling and heating of buildings implementations. In order to develop form-stable and thermally stable blends natural minerals (Colemanite, Ulexite and Mg(OH)(2)) were used to prepare composites via direct impregnation method. These mineral compounds are abundant locally and known to be thermally stable as they show multi-step thermal decompositions. Thermal, morphological and chemical properties of these composites were characterized by thermogravimetric analysis (TGA), the differential scanning calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscope (SEM). Results of analyses indicate that the introduction of mineral phase to the paraffin is achieved adequately despite of minor mixing problems that show a form-stable behaviour. Comparing energy storage abilities of these composites, Mg(OH)(2) or Colemanite containing blends are found to be the promising composites.