导流隔板式相变储热单元性能强化的模拟

马林; MA Lin

doi:10.16513/j.cnki.10-1427/tk.2017.03.007

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分布式能源 ›› 2017, Vol. 2 ›› Issue (3) : 39-44. DOI: 10.16513/j.cnki.10-1427/tk.2017.03.007

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导流隔板式相变储热单元性能强化的模拟

马林 ,
MA Lin

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Numerical Simulation on Performance Enhancement of Lead-Flow Partition Phase Change Heat Storage Unit

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摘要

The traditional heat storage unit based on phase change material (PCM) adopts the simple inner and outer casing structure of which the heat transfer performance is limited due to the uneven distribution of the solid-liquid interface. Therefor, this paper proposes two new types of horizontal and inclined lead-flow partition casings, establishes three different mathematical and physical models of casings, simulates the transition process by two dimensional unsteady state, compares the differences of heat transfer performance between these three structures and analyzes the factors affecting the heat transfer performance of the lead-flow partition. Compared with the traditional structure, the PCM melting time has been reduced by 40.2% by horizontal lead-flow partition and 65% by inclined lead-flow partition. The results show that the lead-flow partition can effectively weaken the uneven distribution of the solid-liquid interface and shorten the PCM melting time, and the heat transfer performance of the casing can be further improved by adjusting the number and inclination of partitions.

关键词

导流隔板 / 相变材料 / 储热单元 / 套管 / lead-flow partition / phase change material / heat storage unit / casing

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马林, MA

Lin

. Numerical Simulation on Performance Enhancement of Lead-Flow Partition Phase Change Heat Storage Unit[J]. 分布式能源. 2017, 2(3): 39-44 https://doi.org/10.16513/j.cnki.10-1427/tk.2017.03.007

[J]. Distributed Energy Resources. 2017, 2(3): 39-44 https://doi.org/10.16513/j.cnki.10-1427/tk.2017.03.007

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