Experimental and Comparison Study on Two Solar Dish Systems with a High Concentration Ratio
Experimental and Comparison Study on Two Solar Dish Systems with a High Concentration Ratio
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DOI：
10.1007/s11630-019-1104-x
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发表时间：
2019-03
影响因子：
2.5
通讯作者：
Haifei Chen;Guiqiang Li;Jie Yang;Fuwei Zhang;Ming Liang;J. Ji
中科院分区：
文献类型：
--
作者：
Haifei Chen;Guiqiang Li;Jie Yang;Fuwei Zhang;Ming Liang;J. Ji
建立了碟式聚光器和平面镜阵列聚光器两个高聚光太阳能系统。本文对喷射水冷装置和平板微通道水冷装置的热性能进行了实验研究。实验结果表明，碟式聚光系统最大表面温差大于20℃，而平面镜阵列系统最大表面温差小于4℃。这表明平面镜阵列聚光器具有较好的均匀性。随着聚光比的增大，聚光光伏系统的电效率逐渐下降。当聚光比为200时，光伏系统的电效率为25%。 500倍以下的聚光比被认为是一个合适的值，此时电效率仍可超过20%。研究发现，平面镜阵列太阳能系统比碟式系统更适合光伏系统，而碟式系统只适合火力发电系统。
Two high concentrating solar systems have been established with dish concentrator and plane-mirrors array concentrator. In the paper, the thermal performance has been experimentally studied with jet water cooling device and flat microchannel water-cooled device. The experimental results show that the maximum surface temperature difference of the dish concentrating system is greater than 20°C, while the plane-mirrors array system is lower than 4°C. It indicates that the plane-mirrors array concentrator has better uniformity. As the concentration ratio increases, the electrical efficiency of the concentrating photovoltaic system gradually decreases. When the concentration ratio is 200, the electrical efficiency of the photovoltaic system is 25%. The concentration ratio of 500 times or less is considered to be a suitable value, and then the electrical efficiency can still exceed 20%. It is found that the plane-mirrors array solar system is more suitable for the photovoltaic system than dish type system, which is only suitable for thermal power generation system.