Testing organic photovoltaic modules for application as greenhouse cover or shading element
Testing organic photovoltaic modules for application as greenhouse cover or shading element
复制标题
DOI：
10.1016/j.biosystemseng.2019.05.003
复制
发表时间：
2019-08-01
影响因子：
5.1
通讯作者：
Teitel, Meir
中科院分区：
文献类型：
--
作者：
Peretz, Maayan Friman;Geoola, Farhad;Teitel, Meir
本研究探讨了使用半透明柔性有机光伏（OPV）组件作为温室遮阳材料的可行性。通过使用这些模块，有可能利用现有的温室农业区进行电力生产。使用OPV模块来遮蔽温室并减少多余的太阳能，一方面可以减少作物的热负荷，另一方面可以使用可再生能源。我们研究了OPV模块的辐射和热性能。在室外条件下，在四个不同的辐射入射角：0度，21度，41度和46度测量模块transmittance。同时，记录模块的开路电压和短路电流，用于功率和效率计算。用分光辐射计进行了透射率、反射率和吸收率的补充实验室测量。为了进一步验证OPV模块，确定了其总传热系数（U值）。在光合有效辐射（PAR）范围内，被测组件的透光率约为20%，反射率约为15%，吸收率约为65%。该组件的平均日功率转换效率约为0.8%，总传热系数U约为6.0 Wm（-2）K-1。放置在温室高隧道的聚乙烯盖上的模块的温度在中午为约50-55摄氏度。该模块的热图像显示了不均匀的热分布，区域之间的温差高达7.5摄氏度。OPV模块似乎适用于温室遮阳和发电，但目前它们过于昂贵，寿命相对较短。(C)2019年IAgRE。由爱思唯尔有限公司出版。保留所有权利。
This study examines the feasibility of using semi-transparent, flexible organic photovoltaic (OPV) modules as greenhouse shading material. By using such modules, it may be possible to utilise existing greenhouse-based agricultural areas for electricity production. Using OPV modules to shade greenhouses and reduce excess solar energy may result in reduced heat load on the crop on the one hand, and use of renewable energy on the other. We examined the radiometric and thermal properties of an OPV module. Module transmissivity was measured under outdoor conditions at four different angles of radiation incidence: 0, 21, 41 and 46 degrees. Simultaneously, the open-circuit voltage, and short-circuit current of the module were recorded for power and efficiency calculations. Supplementary laboratory measurements of transmissivity, reflectivity and absorptivity were performed with a spectroradiometer. To further characterise the OPV module, its overall heat-transfer coefficient (U value) was determined. The examined module had about 20% transmissivity, 15% reflectivity and 65% absorptance in the photosynthetically active radiation (PAR) range. The mean daily power conversion efficiency of the module was about 0.8% and the overall heat transfer coefficient U, was about 6.0 Wm(-2) K-1. The temperature of a module placed on the polyethylene cover of a greenhouse high tunnel was about 50-55 degrees C at midday. Thermal images of the module revealed non-uniform heat distribution, with temperature differences between regions reaching up to 7.5 degrees C. OPV modules appear to be suitable for greenhouse shading and electricity generation but currently they are too expensive and their life duration is relatively short. (C) 2019 IAgrE. Published by Elsevier Ltd. All rights reserved.