| Title |
Specific Heat and Thermal Conductivity Measurement of XLPE Insulator and Semiconducting Materials |
| Authors |
이경용(Lee Kyoung-Yong) ; 양종석(Yang Jong-Seok) ; 최용성(Choi Yong-Sung) ; 박대희(Park Dae-Hee) |
| Keywords |
Semiconducting Materials ; Carbon Black ; Specific Heat ; Thermal Conductivity |
| Abstract |
To improve mean-life and 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 respectively made of sheet form with EVA, EEA and EBA added 30[wt %], carbon black, and the other was made of sheet form by cutting XLPE insulator in 154(kV) power cable. 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[°C] to 90[°C], and the heating rate was 1[°C/mon]. And the measurement temperatures of thermal conductivity were 25[°C], 55[°C] and 90[°C]. In case of semiconducting materials, the measurement temperature ranges of specific heat were from 20[°C] to 60[°C], and the heating rate was 1[°C/mon]. And the measurement temperatures of thermal conductivity were 25[°C], 55[°C]. In addition we measured matrix of semiconducting materials to show formation and growth of carbon black in base resins through the SEM. 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. |