Specific Heat and Thermal Conductivity Measurement of CNT/EEA Semiconducting Materials and XLPE Insulator

CNT/EEA 반도전층 재료와 XLPE 절연체의 열적 특성

  • 양종석 (원광대 전기전자 및 정보공학부) ;
  • 이경용 (한국원자력연구소 방사선이용연구부) ;
  • 신동훈 (원광대 전기전자 및 정보공학부) ;
  • 박대희 (원광대 전기전자 및 정보공학부)
  • Published : 2006.11.01

Abstract

To improve the mean-life and the reliability of power cable, we have investigated specific heat (Cp) and thermal conductivity of XLPE insulator and semiconducting materials in 154[kV] underground power transmission cable. Specimens were made of sheet form with the seven of specimens for measurement. Specific heat (Cp) and thermal conductivity were measured by DSC (Differential Scanning Calorimetry) and Nano Flash Diffusivity. Specific-heat measurement temperature ranges of XLPE insulator were from $20[^{\circ}C]\;to\;90[^{\circ}C]$, and the heating rate was $1[^{\circ}C/min]$. And the measurement temperatures of thermal conductivity were $25[^{\circ}C],\;55[^{\circ}C]\;and\;90[^{\circ}C]$. In case of semiconducting materials, the measurement temperature ranges of specific heat were from $20[^{\circ}C]\;to\;60[^{\circ}C]$, and the heating rate was $1[^{\circ}C/min]$. And the measurement temperatures of thermal conductivity were $25[^{\circ}C]\;and\;55[^{\circ}]C$. From these experimental results both specific heat and thermal conductivity were increased by heating rate because volume of materials was expanded according to rise in temperature. We could know that a small amount of CNT has a excellent thermal properties.

Keywords

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