| 优化界面热阻提升相变-热电耦合系统输出电量 |
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| 引用本文：黄瑾,赵晓君,王元元,吴子华,董岚.优化界面热阻提升相变-热电耦合系统输出电量[J].上海第二工业大学(中文版),2024,41(4):353-358 |
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| 基金项目:上海市自然科学基金 (23ZR1424300), 上海市 “曙光” 计划项目 (22SG56), 上海市科委地方能力建设项目
(22010500700) 资助 |
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| 中文摘要:热电发电器件具有体积小、可靠性高, 无机械运动部件等优点, 经常应用于热源波动环境。由于相变材料相变时能够恒温吸收、释放大量的热量, 被广泛应用到热电发电系统中以提高其热能利用率。在相变-热电耦合系统中, 相变材料和热电模块之间的界面热阻影响了系统的热量传输, 从而强烈影响了系统的发电性能。利用经典焓模型和热电耦合方程分别描述相变材料和热电发电器件中的传热和能量转换过程, 采用有限元方法求解耦合方程, 探讨界面热阻对耦合系统发电性能的影响。结果表明, 存在最优界面热阻使得相变-热电系统的总输出电能达到峰值。通过给出了通过优化界面热阻提升系统性能的方便可行的方法, 有利于热电发电器件在波动热源条件下更广泛的应用。 |
| 中文关键词:热电发电器 相变材料 相变-热电耦合系统 界面热阻 总输出电能 |
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| Enhanced Output Electricity of Coupled Phase Change Material-Thermoelectric Generator System with Optimized Interfacial Thermal Conductivity |
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| Abstract:The thermoelectric electricity components have the advantages of small size, high reliability, and no mechanical motion components.They are often used in the heat source fluctuation environment. Because phase-changing materials can absorb and release a large amount of heat in constant temperature, they are widely used in the thermal power generation system to improve their thermal energy utilization rate. In the phase change-thermoelectric coupling system, the interface thermal resistance between the phase-changing material and the thermoelectric module affects the heat transmission of the system, which strongly affects the power generation performance of the system. Use the classic enthalpy model and thermoelectric coupling equation to describe the heat transfer and energy conversion process in the phase-changing materials and the thermoelectric power generation components, and the decoupled coupling equation is used to explore the effects of the thermal resistance of the interface on the coupling system. The results show that the thermal resistance of the optimal interface makes the total output power of the phase change-thermoelectric system reach its peak. By giving the convenience and feasibility of improving the performance of the system by optimizing the thermal resistance of the interface, it is conducive to the more extensive application of thermoelectric electrical components under the condition of fluctuating thermal source. |
| keywords:thermoelectric generator phase change materials phase change-thermoelectric coupled system interfacial thermal resistance total output electrical energy |
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