Comparative analysis of thermal charging and discharging characteristics in PCM-based energy storage systems with and without pin fins

IF 3 3区工程技术 Q2 CHEMISTRY, ANALYTICAL Journal of Thermal Analysis and Calorimetry Pub Date : 2024-11-11 DOI:10.1007/s10973-024-13562-1

Muhammad Umar Munir, Abid Hussain, Imran Ali, Hanzla Shahid, Abu Summama Sadavi Bilal, Hafiz Muhammad Ali

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Abstract

The miniaturization and increasing functionality of electronic devices lead to significant heat generation, negatively impacting their performance and longevity. Efficient thermal management is crucial to maintain temperature within safe operating limits. Using nanofluids in mini-channel heat sinks and optically tuned nanofluids in agricultural greenhouses has emerged as a viable solution for active cooling. This study investigates the thermal cycling performance of PCM-based heat sinks with and without pin fins to assess their suitability for long-term thermal management applications. Thermal cycling tests are conducted on PCM-based heat sinks containing RT-42 PCM and different pin fin configurations made from aluminum 2024-T851. The tests evaluated stability under a constant 10 W heat flux during both charging and discharging phases for baseline cases without fins. The results indicate that the maximum temperature difference between the 30th and 40th thermal cycles was only 0.97 °C, representing a mere 2.08% variation. This observation highlights the ability of PCM-based heat sinks to maintain a consistent temperature profile even under repeated thermal loading conditions. The PCM-based triangular pin fin heat sink was more effective than the circular and square pin fin heat sinks. It maintained the lowest average temperature at 32.83 °C and had the lowest rate of temperature increase during charging, at 0.463 °C per minute. Furthermore, the combination of PCM and triangular fins demonstrated superior thermal stability compared to other configurations. The maximum temperature difference between the first and 40th thermal cycles for this configuration is observed at only 0.83 °C with 1.38% variation. This exceptionally low-temperature difference underscores the effectiveness of the triangular pin fin design in promoting heat dissipation and maintaining thermal stability. The results highlight the potential of PCMs to enhance the long-term performance of electronic devices by maintaining optimal operating temperatures.

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有翅片和无翅片 PCM 储能系统热充放电特性对比分析

电子设备的微型化和功能的不断增加导致产生大量热量，对其性能和寿命产生负面影响。高效的热管理对于将温度保持在安全工作范围内至关重要。在微型通道散热器中使用纳米流体以及在农业温室中使用光学调谐纳米流体已成为主动冷却的可行解决方案。本研究调查了基于 PCM 的散热片（带或不带针状散热片）的热循环性能，以评估其是否适合长期热管理应用。对含有 RT-42 PCM 和由 2024-T851 铝制成的不同针形散热片配置的基于 PCM 的散热器进行了热循环测试。测试评估了无鳍片基线情况下在充电和放电阶段恒定 10 W 热通量下的稳定性。结果表明，第 30 次和第 40 次热循环之间的最大温差仅为 0.97 °C，变化率仅为 2.08%。这一观察结果凸显了基于 PCM 的散热器即使在重复热负荷条件下也能保持一致温度曲线的能力。基于 PCM 的三角形针形散热片比圆形和方形针形散热片更有效。它的平均温度最低，为 32.83 °C，充电期间的温度上升率最低，为每分钟 0.463 °C。此外，与其他配置相比，PCM 和三角鳍片的组合表现出更高的热稳定性。该配置的第一个和第 40 个热循环之间的最大温差仅为 0.83 °C，变化率为 1.38%。这种极低的温差凸显了三角针翅片设计在促进散热和保持热稳定性方面的有效性。这些结果凸显了 PCM 通过保持最佳工作温度来提高电子设备长期性能的潜力。

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来源期刊

Journal of Thermal Analysis and Calorimetry 化学-分析化学

CiteScore

8.50

自引率

9.10%

发文量

577

审稿时长

3.8 months

期刊介绍： Journal of Thermal Analysis and Calorimetry is a fully peer reviewed journal publishing high quality papers covering all aspects of thermal analysis, calorimetry, and experimental thermodynamics. The journal publishes regular and special issues in twelve issues every year. The following types of papers are published: Original Research Papers, Short Communications, Reviews, Modern Instruments, Events and Book reviews. The subjects covered are: thermogravimetry, derivative thermogravimetry, differential thermal analysis, thermodilatometry, differential scanning calorimetry of all types, non-scanning calorimetry of all types, thermometry, evolved gas analysis, thermomechanical analysis, emanation thermal analysis, thermal conductivity, multiple techniques, and miscellaneous thermal methods (including the combination of the thermal method with various instrumental techniques), theory and instrumentation for thermal analysis and calorimetry.