基于相变流体的热管式太阳能PV/T热电联供系统实验研究

摘要

The testing rigs of water-based and slurry PCM-based heat pipe solar PV/T cogeneration systems were established to test the temperature of PV panels and heat exchange water tanks, thermal/electric power, thermal/electrical efficiency and comprehensive efficiency. The results showed the average PV panel temperature and water tank temperature of slurry PCM-based heat pipe solar PV/T cogeneration system were 2 ℃ and 1.3 ℃ higher than water-based system, respectively. The daily average thermal, electrical and comprehensive efficiency were 7%, 0.8%and 10.2%higher than water-based system, respectively. This study provided reference for the application of phase change slurry to solar energy storage.%文章分别搭建了基于水和相变流体的热管式PV/T热电联供系统实验台,测试分析了相同工况下两个系统的光伏板表面温度、换热水箱温度、热/电功率、热/电效率及综合效率.研究结果表明,在测试工况下,与基于水的热管式PV/T热电联供系统相比,基于相变流体的热管式PV/T热电联供系统光伏板表面温度降低了2℃,蓄热水箱水温升高了1.3℃,日均电效率相对升高了0.8%,日均热效率相对升高了7%,日均综合效率相对升高了10.2%.该研究结果为相变流体在太阳能储存领域的应用提供参考.