Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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Preparation and Thermal Characteristics of Hexadecane/xGnP Shape-stabilized Phase Change Material for Thermal Storage Building Materials

축열건축자재 적용을 위한 Hexadecane/xGnP SSPCM 제조 및 열적특성

  • Kim, Sug-Hwan (Department of Architecture, Graduate School, Soongsil University) ;
  • Jeong, Su-Gwang (Department of Architecture, Graduate School, Soongsil University) ;
  • Lim, Jae-Han (Department of Architecture Engineering, Ewha Womans University) ;
  • Kim, Su-Min (School of Architecture, Soongsil University)
  • 김석환 (숭실대학교 대학원 건축학과) ;
  • 정수광 (숭실대학교 대학원 건축학과) ;
  • 임재한 (이화여자대학교 건축공학과) ;
  • 김수민 (숭실대학교 건축학부)
  • Received : 2012.11.15
  • Accepted : 2013.01.11
  • Published : 2013.02.28
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Abstract

Hexadecane and exfoliated graphite nanoplate (xGnP)composite was prepared as a shape-stabilized phase change material (SSPCM) in a vacuum to develope thermal energy storage. The Hexadecane as an organic phase change material (PCM) is very stable against phase separation of PCM and has a melting point at $18^{\circ}C$ that is under the thermally comfortable temperature range in buildings. The xGnP is a porous carbon nanotube material with high thermal conductivity. Scanning electron microscope (SEM) and Fourier transformation infrared spectrophotometer (FT-IR)were used to confirm the chemical and physical stability of Hexadecane/xGnP SSPCM. In addition, thermal properties were determined by Deferential scanning calorimeter(DSC) and Thermogravimetric analysis (TGA). The specific heat of Hexadecane/xGnPSSPCM was $10.0J/g{\cdot}K$ at $21.8^{\circ}C$. The melting temperature range of melting and freezing were found to be $16-25^{\circ}C$ and $17-12^{\circ}C$. At this time, the laten heats of melting and freezing were 96.4J/g and 94.8J/g. The Hexadecane was impregnated into xGnP as much about 48.8% of Hexadecane/xGnP SSPCM's mass fraction.

Keywords

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