Abstract
The energy demand has increased over the past few years due to the increase in population. Excessive use of fossil fuels causes adverse effects on the environment and human health. By adopting renewable energy, this problem can be solved. However, renewable sources are not available throughout the day. To deal with this problem, a latent heat thermal energy storage system can be adopted. Various materials can be used as phase change material (PCM); sodium acetate trihydrate (SAT) is one of them. Supercooling happens in many PCMs. The term ‘degree of supercooling’ in PCM is used to quantify it. Many factors affect supercooling. This paper will showcase the impact of PCM initial temperature and the effect of volume on the PCM supercooling. The PCM is a salt hydrate SAT. Four samples of SAT are chosen by taking initial temperatures of 60 °C and 70 °C in two different volumes of 8 g and 24 g. These samples are first heated to the desired temperature and then naturally cooled. Temperature history graphs have been plotted for each sample. It is observed that the degree of supercooling did not change significantly when the volume was changed for the same initial temperature, whereas when the initial temperature of the PCM is increased, the degree of supercooling increases.
Published Version
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