전기자동차 충전기 쿨링시스템에 적용할 상변화물질의 열적 특성 및 융해 거동에 관한 실험적 연구

다국어 초록 (Multilingual Abstract)

Phase change materials (PCMs) are used widely for various applications because of their ability to absorb or release thermal energy during the phase change process. Phase change materials store thermal energy in the form of latent heat. Hence, they can absorb and release more thermal energy than sensible heat. The phase change temperature varies depending on the material selected, so it is possible to store thermal energy at various temperatures depending on the material. In this study, some suitable PCMs were selected and manufactured to apply them as a heat absorption device targeting the cooling system of an electric vehicle fast charger. The PCMs selected in this study were fatty acids: lauric acid (LA), palmitic acid (PA), and stearic acid (SA). LA-SA mixtures and PA-SA mixtures were produced and applied to a thermal absorption device. The thermal properties of these PCMs were analyzed by measuring the melting peak temperature and latent heat and conducting a melting experiment to identify the melting behavior. Through a series of experiments, the melting peak temperature of the mixture was lowered, and the temperature gradient of the PCMs during melting was identified. In addition, the LA-SA and PA-SA mixture were suitable as thermal absorption devices.