基于PCM的电子冷却混合散热器实验研究

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL

Journal of Enhanced Heat Transfer Pub Date : 2022-01-01 DOI:10.1615/jenhheattransf.2022040469

Rakesh Nandan, Venugopal Arumuru, P. Rath, M. Das

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引用次数: 6

摘要

本实验研究报告了一种基于相变材料(PCM)的翅片散热器的热性能分析，该散热器放置在模拟CPU芯片的硅橡胶加热器上，通过自然和强制对流冷却。散热器在5个输入功率值(4、6、8、10和12 W)下承受恒定和循环加载。本研究选择石蜡和1-十六醇作为PCM，其熔点分别为58°C - 60°C和48°C - 50°C。稳态和瞬态基温特性表明，在恒负荷自然对流作用下，加PCM的散热器性能优于不加PCM的散热器。随着输入功率的增加，PCM的熔化时间缩短。在两种PCMs之间，填充1-十六醇的散热器在瞬态运行中表现更好。研究发现，循环加载可以更好地了解不同功率输入下散热器的热行为。在自然对流作用下，填充1-十六醇的散热器在循环加载时的总运行时间比填充石蜡的散热器短。循环加载时，采用强制对流冷却的散热片总运行时间分别比采用自然对流冷却的散热片缩短0.41倍和0.43倍，分别填充石蜡和1-十六醇。

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Experimental study of PCM based hybrid heat sink for electronic cooling

The present experimental study reports the thermal performance analysis of a phase change material (PCM)-based ﬁnned heat sink placed on a silicone rubber heater which mimics the CPU chip and is cooled by natural and forced convection. The heat sink is subjected to constant and cyclic loading for ﬁve input power values (4, 6, 8, 10, and 12 W). Parafﬁn wax and 1-hexadecanol are selected as PCM for this study, which have melting points in the ranges of 58°C–60°C and 48°C–50°C, respectively. The steady-state and transient base temperature behavior of the heat sink indicated that the heat sink with PCM performed better than the heat sink without PCM under natural convection subjected to a constant load. With the increase in input power, the melting time of the PCM is reduced. Between the two PCMs, the heat sink ﬁlled with 1-hexadecanol performed better in transient operation. It was observed that cyclic loading offers better insight into the thermal behavior of the heat sinks at different power inputs. The total operation time of heat sink ﬁlled with 1-hexadecanol takes less time than parafﬁn-ﬁlled heat sink during cyclic loading when subjected to natural convection. For cyclic loading, the total operation time of the heat sink is reduced by a factor of 0.41 and 0.43 times when cooled by forced convection as compared to natural convection for heat sink ﬁlled with parafﬁn wax and 1-hexadecanol, respectively.

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来源期刊

Journal of Enhanced Heat Transfer 工程技术-工程：机械

CiteScore

3.60

自引率

8.70%

发文量

审稿时长

12 months

期刊介绍： The Journal of Enhanced Heat Transfer will consider a wide range of scholarly papers related to the subject of "enhanced heat and mass transfer" in natural and forced convection of liquids and gases, boiling, condensation, radiative heat transfer. Areas of interest include: ■Specially configured surface geometries, electric or magnetic fields, and fluid additives - all aimed at enhancing heat transfer rates. Papers may include theoretical modeling, experimental techniques, experimental data, and/or application of enhanced heat transfer technology. ■The general topic of "high performance" heat transfer concepts or systems is also encouraged.