Topology Optimization of Fins for Rapid Heat Storage and Release in Triangular-Inside Tube Units北大核心CSCD

针对传统相变蓄热器传热速率低的问题，提出了一种内三角管式的蓄热器，并基于拓扑优化原理，以强化换热为目的，对其进行肋片设计，重构了拓扑结果，进而提取其拓扑特征重新设计肋片，分析了不同肋片设计对传热能力的影响。结果表明:内三角管式蓄热器相比传统圆管式蓄热器，蓄放热性能大大提高；安装拓扑重构肋片的蓄热器可以使蓄、放热时间缩短，传热效率提高；在蓄热过程中，分叉的拓扑特征可以提高自然对流作用；在放热过程中，安装拓扑重构肋片的蓄热器(火 积)耗散更小，可逆性更好，换热效率更高。

Topology Optimization of Fins for Rapid Heat Storage and Release in Triangular-Inside Tube Units

A triangular-inside tube accumulator was proposed to solve the problem of low heat transfer rates of traditional phase change accumulators. Based on the topology optimization, the fins were designed for the purpose of enhancing heat transfer, and the topological results were reconstructed, with the topological characteristics extracted to redesign the fin configuration, and the heat transfer capacities of different fin configurations analyzed. The results show that, the triangular-inside tube accumulators have significant advantages of heat storage and release performances over the traditional circular tube accumulators; the accumulators with topologically reconstructed fins can shorten the heat storage and release time and improve the heat transfer efficiency; in the heat storage process, the bifurcated topology characteristics can improve the natural convection; during the heat release process, the accumulators with topologically reconstructed fins are less entransy dissipative, more reversible and more efficient.