EFFECT OF ALUMINUM FOAM PORE DENSITY ON THE MELTING PROCESS OF PARAFFIN UNDER VARIOUS HEATING RATES


Ozcatalbas M., SÖZEN A.

Heat Transfer Research, cilt.56, sa.14, ss.69-78, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 56 Sayı: 14
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1615/heattransres.2025057781
  • Dergi Adı: Heat Transfer Research
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.69-78
  • Anahtar Kelimeler: aluminum foam, heating rate, melting process, paraffin, phase change material (PCM), pore density, thermal energy storage
  • Gazi Üniversitesi Adresli: Evet

Özet

This study investigates the impact of aluminum foam pore density on the melting process of paraffin under various heating rates. Aluminum open-cell foams with three different pore sizes (10, 20, and 30 PPI) were utilized to en-hance the thermal conductivity of paraffin. Differential scanning calorimetry (DSC) and experimental methods were employed to analyze the thermal behavior of the composite materials. The results demonstrate that aluminum foams significantly improve heat dissipation and reduce temperature gradients, particularly at higher heating rates. Smaller pore sizes (higher PPI values) provided more uniform temperature distribution, enhancing the overall thermal perfor-mance. Key numerical findings include reductions of the temperature gradient by up to 50% at higher heating rates when aluminum foams are incorporated. In addition, the 30 PPI aluminum foam and paraffin composite achieved a two-time improvement in thermal conductivity compared to pure paraffin. These findings highlight the potential of aluminum foam–paraffin composites for advanced thermal energy storage applications, such as electric vehicle battery cooling and thermal management of the space system.