Conclusion :
It is clear from the research on the optimal fin length distribution for a tubular PCM heat exchanger that the choice of fin design has a substantial impact on improving the efficiency of heat transfer during both melting and solidification processes. Numerical simulations of the three fin length distribution designs were used to thoroughly assess them, and the findings have given us important information about the best design. The study’s main conclusions can be summed up as follows:
1. Optimum Design: Model A-3, one of the three models under investigation, stood out as the best layout. The bottom fins in this style are longer but the top fins are kept at their original length with shorter side fins. The best heat transfer efficiency for both melting and solidification processes was discovered to be offered by it.
2. Influence of Lower Fins: The study shows that by encouraging effective heat transport, lengthening the bottom fins has a favorable effect on melting. But it was also noted that this modification slows the solidification process.
3. Significance of Upper and Lower Fins: The study emphasizes the importance of the upper and lower fins in a five-longitudinal-fin tabular Phase Change Material heat exchanger over the side fins. As a result, the design of these fins is critical for achieving optimal heat transfer performance.
Finally, selecting the proper fin length distribution design in a tubular PCM heat exchanger is crucial for enhancing heat transfer efficiency throughout the melting and solidification processes. Model A-3 has been selected as the most effective alternative for improving heat transfer in both stages due to its fin arrangement. These findings offer useful insights for the design and optimization of PCM heat exchangers, with implications for a wide range of heat storage and management applications. More research and practical use of such designs may result in more efficient and sustainable thermal energy systems.