Effect of graphite powder on thermal behavior of phase change material

Makoto Shibahara; Yuuhi Hatta; Qiusheng Liu; Sutopo Purwono Fitri

doi:10.59400/esc1815

Effect of graphite powder on thermal behavior of phase change material

Makoto Shibahara Graduate School of Maritime Sciences, Kobe University, Kobe 658-0022, Japan
Yuuhi Hatta Graduate School of Maritime Sciences, Kobe University, Kobe 658-0022, Japan
Qiusheng Liu Graduate School of Maritime Sciences, Kobe University, Kobe 658-0022, Japan
Sutopo Purwono Fitri Marine Engineering Department, Sepuluh Nopember Institute of Technology, ITS Campus Sukolilo, Surabaya 60111, Indonesia

Ariticle ID: 1815

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DOI: https://doi.org/10.59400/esc1815

Keywords: phase change material; latent heat; thermal response; graphite powder; supercooling

Abstract

The effect of graphite powder on the thermal behavior of phase change material (PCM) was investigated experimentally. It is well known that the graphite is contributed to enhance the thermal response. However, the effect of graphite on the supercooling of the PCM is not clear when a highly heat conductive material is added. In this study, the specific heat of the PCM based on sugar alcohol such as D-mannitol and inositol was measured with an adiabatic scanning calorimeter. The enthalpy and entropy during the phase-change process were obtained by the measured specific heat of the PCM. Additionally, the exergy analysis was conducted to evaluate the thermal energy storage of PCM. As the experimental results, the specific heat of D-mannitol during the phase change process was higher than that of inositol. Moreover, it was found that the addition of graphite powder at the mass fraction of 9% improves the thermal behavior of D-mannitol with lower supercooling while maintaining latent heat. The suppression of supercooling by the addition of 9% graphite powder was 37.5%.

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Published

2024-11-19

How to Cite

Shibahara, M., Hatta, Y., Liu, Q., & Purwono Fitri, S. (2024). Effect of graphite powder on thermal behavior of phase change material. Energy Storage and Conversion, 2(4), 1815. https://doi.org/10.59400/esc1815

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