Comparative analyses on dynamic performances of photovoltaic-thermal solar collectors integrated with phase change materials
Comparative analyses on dynamic performances of photovoltaic-thermal solar collectors integrated with phase change materials
复制标题
相变材料集成光热太阳能集热器动态性能对比分析
DOI：
10.1016/j.enconman.2016.11.002
复制
发表时间：
2017
影响因子：
10.4
通讯作者：
Fang Guiyin
中科院分区：
文献类型：
--
作者：
Su Di;Jia Yuting;Alva Guruprasad;Liu Lingkun;Fang Guiyin
光伏热集热器的运行条件（特别是温度）对光伏热混合集热器的动态性能有显着影响。只有一小部分入射的太阳辐射可以转化为电能，其余的则转化为热量。该热量导致光伏模块的效率降低。为了提高光伏热混合太阳能集热器的性能，我们对集成相变材料的光伏热混合太阳能集热器进行了对比分析。对太阳能电池温度、空气出口温度、电功率、热功率、电效率、热效率和综合效率等电热参数进行仿真和分析，以评估混合光伏集热器的动态性能。研究发现，相变材料层在光伏集热器中的位置对光伏集热器的性能有显着影响。结果表明，光伏集热器中的上部相变材料模式可以显着提高光伏集热器的热电性能。研究发现，“上相变材料”模式下光伏集热器的整体效率比“无相变材料”模式下提高了10.7%。此外，对于带有上相变材料的光伏集热器，验证了3cm厚的相变材料层具有优异的电性能和热性能。
The operating conditions (especially temperature) of photovoltaic–thermal solar collectors have significant influence on dynamic performance of the hybrid photovoltaic–thermal solar collectors. Only a small percentage of incoming solar radiation can be converted into electricity, and the rest is converted into heat. This heat leads to a decrease in efficiency of the photovoltaic module. In order to improve the performance of the hybrid photovoltaic–thermal solar collector, we performed comparative analyses on a hybrid photovoltaic–thermal solar collector integrated with phase change material. Electrical and thermal parameters like solar cell temperature, outlet temperature of air, electrical power, thermal power, electrical efficiency, thermal efficiency and overall efficiency are simulated and analyzed to evaluate the dynamic performance of the hybrid photovoltaic–thermal collector. It is found that the position of phase change material layer in the photovoltaic–thermal collector has a significant effect on the performance of the photovoltaic–thermal collector. The results indicate that upper phase change material mode in the photovoltaic–thermal collector can significantly improve the thermal and electrical performance of photovoltaic–thermal collector. It is found that overall efficiency of photovoltaic–thermal collector in ‘upper phase change material’ mode is 10.7% higher than that in ‘no phase change material’ mode. Further, for a photovoltaic–thermal collector with upper phase change material, it is verified that 3 cm-thick phase change material layer is excellent both in electrical and thermal performance.