engleski

Experimental investigation of thermal properties of the hybrid phase change materials

Thermal management using phase change materials (PCM) is increasingly used in various systems and technological processes. This paper investigates novel potential PCM materials as a combination of animal fat, i.e. pork, with burnt oil and edible sunflower oil. Pork fat (lard) is a cheap organic PCM material thrown away in large quantities at the level of the year because it has become unfit for human consumption. In order to reduce the negative impact on the environment, this waste organic PCM material could be used for thermal energy storage. Therefore, an experimental study focused on investigating the thermal properties of industrial-produced lard coupled with edible and waste oil. The thermal properties of two hybrid PCMs were investigated with different ratios of lard and oil. One hybrid is a combination of lard and sunflower oil, and the other is a hybrid of lard and burnt sunflower oil (waste oil). The highest measured thermal conductivity of 0.193 W/mK was achieved for a hybrid material containing 10% of burnt oil while for the same volume fraction the highest volumetric specific heat capacity was achieved for the sample with sunflower oil, i.e. 1, 672 MJ/m3K. Thermal properties of novel proposed hybrid PCMs were compared to the PCM based on pure lard. The main goal of the research was to investigate a cheap and accessible PCM for potential applications in thermal management systems.

PHASE CHANGE MATERIALS, PORK FAT, THERMAL ENERGY STORAGE, HYBRID PCM, THERMAL PROPERTIES

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