提出一种脉动热管（PHP）与翅片相结合的太阳能聚光型光伏组件散热技术,通过实验测试散热装置的运行特性与散热效率。结果显示脉动热管与翅片联合散热结构可高效快速降低光伏组件的工作温度,且光伏组件的散热需求越高,脉动热管两端的温差就越大,从而有利于工质的快速循环流动,脉动热管的启动特性和传热效率越好。此外,测试结果显示翅片能有效降低脉动热管的热阻,提高脉动热管的传热效率。最后,根据测试结果综合评价脉动热管翅片联合散热结构的强化效果,并探讨其使用范围和应用优势,为进一步推广分布式光伏发电技术的应用提供技术保障。
Abstract
The progress of concentrating photovoltaic technology is regulated the temperature of photovoltaic modules and improving the power generation efficiency of photovoltaic systems have become the core issues to ensure the stable operation of the system. In this work, a heat dissipation technology combined with pulsating heat pipe （PHP） and fin was proposed to reduce the operational temperature of photovoltaic panel. And the experiment tested the operating characteristics and heat dissipation efficiency of the combined device. The results found that the combined heat dissipation structure of the PHP and fin can efficiently and quickly reduce the working temperature of photovoltaic panels. Meanwhile, the high heat dissipation demand of photovoltaic panels could lead to a large temperature difference between the two ends of the PHP, as well as accelerating the working fluid in the pipe. Thus, it could achieve the better startup characteristics and higher heat transfer efficiency of the PHP. Besides, the tested results indicated that the fins could effectively reduce the thermal resistance of the PHP, which could further improve its heat transfer efficiency during the operation. Finally, based on the measured results, a comprehensive evaluation was conducted on the enhanced effect of the combined heat dissipation structure of the PHP and fins. It also discussed the application scopes and advantages of this technology, which provides technical support for further promoting the application of distributed photovoltaic power generation technology.
关键词
光伏组件 /
强化传热 /
脉动热管 /
翅片
Key words
photovoltaic modules /
heat transfer enhancement /
pulsating heat pipe /
fin
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基金
河南省重点研发专项（241111320900）
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