Performance improvement from single to multi phase change materials in a thermal energy storage system
Phase change materials are used in many applications to work as thermal energy storage systems. One way to transfer the heat is by letting water flow through a finned pipe submerged in i tank filled with PCMs. This model is analyzed with a finite element difference based numerical software. The power ratio between using single-PCM and multi-PCMs is compared. The hypothesis was that a multi-PCM configuration is more efficient than a single.
The results show that a multi-PCM configuration is more efficient than a single-PCM configuration. It however also indicates that it is of great importance to chose the right temperature span of PCM temperatures to achieve as high power performance as possible. This is recommended for further studies.
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