Effects of Boundary Conditions on the Dynamic Response of a Phase Change Material

Shamberger, Patrick J.; Hoe, Alison; Deckard, Michael; Barako, Michael T.

doi:10.1109/itherm45881.2020.9190311

Cited by 2 publications

(1 citation statement)

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“…Response analyses were conducted at different pulse frequencies, determining the optimal heat source arrangement and studying the heat transfer efficiency for different aspect ratios at the same volume. Shamberger et al [11] numerically studied the dynamic response characteristics of PCMs with varying external frequencies, revealing its effective absorption and release of heat and buffering of transient heat pulses at different frequencies. The study found that the internal temperature distribution in the single-phase region was strongly perturbed by oscillating heat boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Cooling Method of Phase Change Heat Exchange Unit with Layered Porous Media

Zhang,

Zhang

2024

Aerospace

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The implementation of heat sinks in high-power pulse electronic devices within hypersonic aircraft cabins has been facilitated by the emergence of innovative phase change materials (PCMs) characterized by excellent thermal conductivity and high latent heat. In this study, a representative material, layered porous media filled with paraffin wax, was utilized, and a three-dimensional numerical model based on the enthalpy-porosity approach was employed. A thermal response research was conducted on the Phase Change Heat Exchange Unit with Layered Porous Media (PCHEU-LPM) with different cooling methods. The results indicate that water cooling proved to be suitable for the PCHEU-LPM with a heat flux of 50,000 W/m2. Additionally, parametric studies were performed to determine the optimal cooling conditions, considering the inlet temperature and velocity of the cooling flow. The results revealed that the most suitable conditions were strongly influenced by the coolant inlet parameters, along with the position of the PCM interface. Finally, the identification of the parameter combination that minimizes temperature fluctuations was achieved through the Response Surface Analysis method (RSA). Subsequent verification through simulation further reinforced the reliability of the proposed optimal parameters.

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Section: Introductionmentioning

confidence: 99%