Chongtian Wu , Xiaolu Yuan , Nenglin Yuan , Yonghao Li , Benben Kong , Hong Shi
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Lightweighting strategies for optimized thermal energy Storage: Topology optimization of heat exchanger fins
This study presents a novel method for optimizing fin structures in Thermal Energy Storage Systems (TESS) to enhance the thermal performance of Phase Change Materials (PCM) through Topology Optimization (TO). For the first time, the study incorporates the mass factor and weight ratio (γ) into the TESS optimization process, which is particularly crucial for applications requiring lightweight design, such as in the aerospace industry. Utilizing the “Y + T” fin design derived from TO outcomes and combining it with the “Parameter Sensitivity Analysis + Entropy Weighted-TOPSIS” method for multi-objective optimization, the research elucidates the thermal storage mechanisms and achieves rapid fin structure optimization. The results indicate that the optimal fin model with three branches at angles (θ) of 90° significantly improves the melting efficiency by 36.5 % and reduces the melting time of PCM by 375.9 s compared to the model without fins. Further re-optimization of the fin root length and width ratio led to an additional reduction of 15.2 s in PCM melting time. In summary, the study successfully realizes a lightweight TESS design through fin optimization, substantially enhancing energy efficiency and system adaptability. It clarifies the thermal storage mechanisms, facilitating rapid optimization, and provides insights for fin optimization and lightweight design in TESS applications.
期刊介绍:
Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application.
The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.